Embrasure brushes with core stability for an oral hygiene device

Abstract

An oral hygiene system including a flosser headpiece with a base portion with arms extending to support an embrasure cleaning feature and flossing filament. The floss filament spans between the arms of the headpiece, and the embrasure cleaning features are located at the ends of the floss filament that meet the headpiece arms. The embrasure cleaning features are tapered and have embrasure-shaped cross-sections. As such, the embrasure cleaning features may slide into and out of embrasures during flossing via the floss filament. The embrasure cleaning features may include flexible ribbings surrounding the cross-sections of the embrasure cleaning features. The embrasure cleaning features may be supported by core structures that provide stability during manufacturing and use.

Description

EMBRASURE BRUSHES WITH CORE STABILITY FOR AN ORAL HYGIENE DEVICECROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit ofU.S. Provisional Application No. 63 / 712,228, filed October 25, 2024, which is incorporated herein by reference in its entirety.BACKGROUND

[0002] Maintaining good oral hygiene can be difficult as it requires more than just the semiannual visit to the dentist for a professional teeth cleaning. Proper daily personal care must be carried out to reduce the risk of dental caries (cavities), gingivitis (gum disease), halitosis (bad breath) and other oral diseases. Poor oral health has also been shown to increase the risk of or contribute to the complications of systemic conditions such as cardiovascular disease, diabetes, pneumonia, and pregnancy. Research is currently being done to investigate other possible links of gum disease to Alzheimer's Disease and Rheumatoid Arthritis.

[0003] The purpose and effectiveness of various toothbrushing devices leave some areas of the mouth unclean. Some of those particular areas left uncared for by traditional toothbrushing include, but are not limited to, the interdental spaces, gingival sulcus, and the tongue.SUMMARY

[0004] Provided herein are oral hygiene and oral care devices having components particularly configured for cleaning embrasures during flossing.

[0005] In some aspects, the present technology provides an attachable headpiece for a flosser device, comprising: a headpiece body; a first arm and a second arm disposed on opposite ends of the headpiece body and extending away from the headpiece body, the first arm and the second arm extending in parallel in a same direction, each of the first arm and the second arm having an inner face and an outer face; a floss filament extending between the inner face of first arm and the inner face of second arm; and two embrasure contacting interfaces each extending from the inner face of one of the first arm or the second arm along the floss filament up to a first position, each embrasure contacting interface configured to support the floss filament configured to be pushed into a dental embrasure in response to a lateral movement of the attachable headpiece while the floss filament is disposed within the dental embrasure between two adjacent teeth, wherein each embrasure contacting interface comprises: a substrate core within each embrasure contacting interface and spanning through a respective arm to the outer face of the respective arm, an overmold disposed around the substrate core anddefining cross-sections of each embrasure contacting interface, the cross-sections having a geometry corresponding to a profile of the dental embrasure and being tapered in size away from the respective arm, and a plurality of embrasure contacting protrusions around the overmold and located at different lateral positions along each embrasure contacting interface, each embrasure contacting protrusion proportionally enlarging a cross-section defined by the overmold at a corresponding lateral position.

[0006] In other aspects, the present technology provides an oral care device comprising: a handle comprising a gripping portion and a neckpiece; and a headpiece removably coupled to the neckpiece, the headpiece comprising: a first arm and a second arm disposed on opposite ends of a headpiece body and extending parallel to one another from the headpiece body in a same direction, each of the first arm and the second arm including an inner face and an outer face; a floss filament extending between the inner face of the first arm and the inner face of the second arm along a lateral axis perpendicular to the first arm and the second arm, the lateral axis being located inset from a tip of the first arm and a tip of the second arm; and extending from each of the first arm and the second arm, an embrasure contacting interface extending medially from the inner face of a respective arm and having cross-sections centered about the lateral axis and tapered in size away from the inner face, wherein the cross-section has a concave quadrilateral geometry corresponding to a profile of a dental embrasure, and wherein the embrasure contacting interface comprises: a substrate core comprising a flat base across the outer face of the respective arm and a first projection that extends from the flat base through the respective arm along the lateral axis up to a first lateral distance past the inner face of the respective arm, the substrate core being of a first material with a first rigidity; an overmold disposed around the first projection of the substrate core and defining the cross-section of the embrasure contacting interface, the overmold being of a second material with a second rigidity less than the first rigidity; and a plurality of embrasure contacting protrusions each surrounding the overmold and located at different lateral positions and scaling up the cross-section of the embrasure contacting interface at each corresponding lateral position.

[0007] In other aspects, the present technology provides an assembly for retaining positioning of a floss filament during manufacturing of headpieces for flosser devices, the assembly comprising: a headpiece body and two arms extending in parallel away from the headpiece body in a same direction, each of the two arms comprising an inner face and an outer face; and for each of the two arms, a core structure comprising: a member aligned with a common axis that extends from the inner face of a respective arm along a lateral direction that extends perpendicular to the two arms, the member configured to provide a sleeve for a flossfilament spanning between the two arms along the common axis, and a first base pressed against a first contact area across the outer face of the respective arm and connected to the member through the respective arm, the first base configured to counteract movements of the member laterally away from the common axis based on an interface between the first base and the first contact area across the outer face.

[0008] In still other aspects, the present technology provides a headpiece of an oral care device comprising: a first arm and a second arm disposed on opposite ends of a headpiece body and extending parallel to one another along a height direction from the headpiece body, each of the first aim and the second arm including an inner face and an outer face; a floss filament extending between the inner face of the first arm and the inner face of the second arm along a lateral axis perpendicular to the height direction, and directly attached to each of the first arm and the second arm, an embrasure contacting interface extending medially from the inner face of a respective arm, wherein the embrasure contacting interface comprises: a substrate core that extends from the outer face to the inner face of the respective arm and medially from the inner face of the respective arm and terminating at a first distance past the inner face of the respective arm, the substrate core comprising a first material with a first rigidity; an embrasure conforming body disposed over the substrate core, the embrasure conforming body extending medially from the inner face of the respective arm and terminating at the first distance or a second distance past the inner face of the respective arm, the embrasure conforming body comprising a second material with a second rigidity less than the first rigidity; and a plurality of embrasure contacting protrusions, each of the embrasure contacting protrusions surrounding the embrasure conforming body and having respective contours that substantially match cross sections of the embrasure conforming body at corresponding lateral positions of the embrasure confomiing body, the embrasure contacting protrusions being offset laterally with respect to one another.

[0009] In still other aspects, the present technology provides a foundational component of an oral care device, comprising: a first arm and a second arm disposed on opposite ends of a headpiece body and extending parallel to one another along a height direction from the headpiece body, each of the first arm and the second arm including an inner face and an outer face; a floss filament extending between the inner face of the first arm and the inner face of the second ami along a lateral axis perpendicular to the height direction, and directly attached to each of the first arm and the second arm: a substrate core that extends from the outer face to the inner face of the respective arm and medially from the inner face of the respective ami and terminating at a first distance past the inner face of the respective arm; and one or morestabilizing cores attached to the outer face or the inner face, the one or more stabilizing cores configured to prevent flexion of the respective arm during a molding process to mold an embrasure conforming body onto the substrate core.

[0010] In yet other aspects, the present technology provides an oral care device comprising: a handle comprising a gripping portion and a neckpiece; and a headpiece removably coupled to the neckpiece, the headpiece comprising: a first arm and a second arm disposed on opposite ends of a headpiece body and extending parallel to one another along a height direction from the headpiece body, each of the first arm and the second arm including an inner face and an outer face; a floss filament extending between the inner face of the first arm and the inner face of the second am along a medial axis perpendicular to the height direction, and directly attached to each of the first am and the second arm, an embrasure contacting interface extending medially from the inner face of a respective am, wherein the embrasure contacting interface comprises: a substrate core that extends from the outer face to the inner face of the respective arm and medially from the inner face of the respective am and tcminating at a first distance past the inner face of the respective am, the substrate core comprising a first material with a first rigidity; an embrasure conforming body disposed over the substrate core, the embrasure conforming body extending medially from the inner face of the respective arm and terminating at the first distance or a second distance past the inner face of the respective arm, the embrasure conforming body comprising a second material with a second rigidity less than the first rigidity; and a plurality of embrasure contacting protrusions, each of the embrasure contacting protrusions surrounding the embrasure confoming body and having respective contours that substantially match cross sections of the embrasure conforming body at corresponding lateral positions of the embrasure conforming body, the embrasure contacting protrusions being offset laterally with respect to one another.

[0011] Further provided herein are methods of improving dental hygiene and cleaning dental embrasures with the oral care or oral hygiene devices of the present technology.BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Many aspects of the present technology are better understood with reference to the following drawings. The components in the drawings are not necessarily to scale. Instead, emphasis is placed on clearly illustrating the principles of the present technology. The drawings should not be taken to limit the present technology to the specific embodiments depicted, but are for explanation and understanding only.

[0013] Fig. 1 illustrates a side perspective view of an example oral hygiene or oral care device, which includes a handle portion and a headpiece having embrasure brushes, in accordance with embodiments of the present technology.

[0014] Figs. 2A-2F illustrate additional views and orientations of an example oral hygiene device or oral care device, in accordance with embodiments of the present technology. Fig. 2A is an oblique perspective view. Fig. 2B is a top view. Fig. 2C is a side perspective view from a different perspective compared to Fig. 1. Fig. 2D illustrates an expanded top perspective view. Fig. 2E illustrates an expanded front perspective view. Fig. 2F illustrates an expanded bottom perspective view.

[0015] Figs. 3 A -3G illustrate additional views and orientations of an example oral hygiene device or oral care device, in accordance with embodiments of the present technology.

[0016] Fig. 3 A illustrates a front view and Figs. 3B and 3C illustrate expanded front views. Fig. 3D illustrates a front view. Fig. 3E illustrates a top perspective view. Fig. 3F illustrates a side perspective view. Fig. 3G illustrates a front view.

[0017] Figs. 4A and 4B illustrate a detailed view of an example embrasure brush, which may include example protrusions surrounding an example brush body, in accordance with embodiments of the present technology.

[0018] Figs. 5A-5D illustrate an example embrasure having an embrasure apex and embrasure corners based on which example embrasure brushes are shaped, in accordance with embodiments of the present technology. Fig. 6A illustrates a front view of an example embrasure brush of a headpiece including a core structure. Fig. 6B illustrates a perspective view of a core structure of an embrasure brush of a headpiece. Fig. 6C illustrates an example core structure of an embrasure brush of a headpiece.

[0019] Figs. 7A-7B illustrate aspects of an example scraper surface disposed on a headpiece, in accordance with embodiments of the present technology.

[0020] Figs. 8A-8F illustrate different views of an example oral care device cover, in accordance with embodiments of the present technology. Fig. 8A illustrates a bottom perspective view. Figs. 8B-8F illustrate different views and different view orientations. Fig.8B is an isometric view. Fig. 8C is a top view. Fig. 8D is a bottom view. Fig. 8E is a front view. Fig. 8F is a side view.

[0021] Fig. 9 illustrates a oral care device kit, in accordance with embodiments of the present technology.DETAILED DESCRIPTION

[0022] The present technology is generally directed to oral hygiene devices having components particularly configured for cleaning embrasures during flossing. An oral hygiene device may include a floss filament with embrasure brushes on either end, with the embrasure brushes being configured to slide into and out of an embrasure as the floss filament is moved back and forth within an embrasure. In particular, an embrasure brush may have a tapered shape with the floss filament exiting at a tip thereof, and the cross-section of the embrasure brush may be substantially concave quadrilateral shape (e.g., similar to an arrowhead) that mimics the shape of the embrasure. Ribbings may surround or skirt around an embrasure brush and may act as bristles to dislodge debris from an embrasure. Also described herein are scrapers included in oral hygiene device that may be used, for example, to scrape a tongue.

[0023] While the present technology is capable of being embodied in various forms, the description below of several embodiments is made with the understanding that the present technology is to be considered as an exemplification of the present technology and is not intended to limit the present technology to the specific embodiments illustrated. Headings are provided for convenience only and are not to be construed to limit the present technology in any manner. Embodiments illustrated under any heading may be combined with embodiments illustrated under any other heading.I. Overview

[0024] The present technology is directed to oral hygiene systems. In some embodiments, illustrative devices may include a handheld oral hygiene system that includes a flosser headpiece and a reusable or disposable, manual (non-vibrating) or electric (vibrating) or otherwise powered, handles. In some embodiments, the various headpieces may be disposable, and in various embodiments, an oral care device and / or components thereof may be scaled for various uses, including adult applications or pediatric applications. The flosser headpiece includes a length of floss filament that a user may position and manipulate (via the handle) around their tooth to perform flossing. In various embodiments, the flossing provided by the floss filament included in the headpiece is enhanced based on vibration of the handle, which causes vibrations in the floss filament while the floss filament is scraped against and between the teeth.

[0025] Certain embodiments of a flosser headpiece include embrasure brushes positioned on either end of the floss filament, for example, where the floss filament is anchored or securedto portions of the flosser headpiece. These embrasure brushes may be aligned with the floss filament such that the embrasure brushes may enter and be disposed within embrasures (or roughly triangular or pyramidal gaps between two neighboring teeth and an underlying gum line) as the floss filament is linearly / axially translated to its ends. In some embodiments, the embrasure brushes may have a closed three-dimensional geometry, such as being shaped as a polyhedron with polygon cross-sections. In some embodiments, the embrasure brushes may have at least three lateral surfaces and at least one base surface. In some embodiments, the embrasure brushes may have a concave quadrilateral cross-sectional geometry, an approximately triangular cross-sectional geometry, and / or the like in order to maximize their fit within the embrasures.

[0026] At least some of the various solutions included in the present technology address challenges related to the manufacturing and the use of embrasure brushes. Example embodiments of embrasure brushes introduced herein include core structures that reduce misalignments of the embrasure brushes when floss filaments arc attached during headpiece manufacturing. When even minor misalignments of the embrasure brushes occur, a floss filament may be incorrectly and defectively attached to the headpiece, for example, through sides of the embrasure brushes instead of the tips thereof. The example embodiments disclosed herein improve embrasure brush stability during manufacturing so that floss filament may be attached through the tips of the embrasure brushes as desired.

[0027] Various other improvements and features of embrasure brushes and flosser headpieces generally are disclosed herein.

[0028] Certain details are set forth in the following description to provide a thorough understanding of various embodiments of the present technology. However, other details describing well-known features of oral hygiene / care devices are not set forth below to avoid unnecessarily obscuring the description of various embodiments of the present technology.IL Selected Embodiments of Oral Care / Hygiene Devices and Associated Components Configured in Accordance with Embodiments of the Present Technology

[0029] Fig. 1 illustrates an example oral care device 100. In some embodiments, the oral care device 100 comprises a headpiece 102 and a handle or handle portion 104. For example, the headpiece 102 may include a supporting portion, headpiece body, or base portion 106 with arms 108 extending from the base portion 106. In some embodiments, the arms 108 are part of the base portion 106. In other embodiments, the arms 108 are separate elements from the base portion 106. In some embodiments, the arms 108 include, or are attached to, a cleaning feature,for example, an embrasure brush, embrasure contacting segment, or embrasure contacting interface (hereinafter “embrasure brush”) 110. In some embodiments, the embrasure brush 100 may comprise or consist of a tapered shape, for example, to engage with areas of the gums between and / or adjacent to teeth. The embrasure brush 110 may engage with such areas (e.g., an embrasure) based on sliding and fitting into those areas during a linear / axial flossing motion of the headpiece in which at least a portion of the embrasure brush 110 may be slid across the embrasures. The cleaning feature may include a plurality of cleaning structures. In some embodiments, the cleaning structures may have ribs, protrusions, finger-like structures that may interact with the gums and / or teeth. In some embodiments, the embrasure brushes 110 may have a closed three-dimensional geometry, such as being shaped as a polyhedron with polygon cross-sections. In some embodiments, the embrasure brushes 110 may have at least three lateral surfaces and at least one base surface. At least one base surface may constitute an arm contacting surface, which is adjacent to, directly contacts or abuts, or indirectly contacts a respective arm 108. The arm contacting surface may have a contour that matches an overall shape of the other polygon cross-sections of the polyhedron, though dimensions may differ among the contour and the other polygon cross-sections. The arm contacting surface itself may constitute a cross section of the polyhedron. In some embodiments, the contour of the arm contacting surface may have larger dimensions than any of the other polygon cross-sections. In some embodiments, the embrasure brushes 110 have another base surface such as a truncated surface opposite of the arm contacting surface. In some embodiments, the embrasure brush 110 may have a substantially pyramidic shape, a truncated pyramid, or taper having a base surface (e.g., the arm contacting surface) on one end and tip on the other. Additionally or alternatively, the pyramidic shape or taper may be isometric or asymmetrical. A profile of the embrasure brush 110 may have a linear taper or a non-linear taper as the embrasure brush 110 extends from the arms 108 to a filament 112 (e.g., a floss filament). The substantially pyramidic shape demonstrates a technical benefit because it may approximate a three-dimensional geometry of individual embrasures, such as interdental papilla, or gum tissue within an incisor region. This facilitates effective contact between the embrasure brush 110 and the different surfaces of the individual embrasures and enables the embrasure brush 110 to thoroughly sweep the embrasures. Additionally, the tapered profile of the pyramidic shape demonstrates a technical benefit. The tapered profile may not only accommodate different sized embrasures but also provide progressive sweeping. A degree of tapering, measured, for example, by a slope angle of the pyramidic shape, may range from 5 and 45 degrees, 10 to 40 degrees, 15 to 35 degrees, 20 to 30 degrees, 10 to 20 degrees, 5 to 10 degrees, or any subranges or values therebetween.

[0030] The headpiece 102 includes the filament 112. In some embodiments, the filament 112 comprises or consists of a floss string or a floss ribbon. In some embodiments, the filament 112 may be anchored on either end (e.g., filament end) by the cleaning features (e.g., embrasure brushes 110). In some embodiments, the embrasure brush 110 may include a cone or pyramid with a base surface that rests on the inner face of the arms 108, and tapers until a position (e.g., medial position) where an exposed portion of the filament 112 emerges. The base shapes may be circle, oval, square, rectangle, triangle, pentagon, hexagon, star with 3, 4, 5, 6, 7, or 8 points and the sides of any of these shapes may have concave or convex sides. With the filament 112 emerging at the position, which may correspond to a point, apex, tip, or truncated surface of the embrasure brush 110, the embrasure brush 110 may be guided into an embrasure if the filament 112 is already disposed therewithin. In some embodiments, the filament 112 extends across the arms 108. Portions of the filaments 112 may be inserted within an interior region of the embrasure brushes 110 and be unexposed. The filaments 112 may be devoid of per-and polyfluoroalkyl substances (PFAS) and polytetrafluoroethylene (PTFE). In some embodiments, the filaments 112 are composed of one or more materials selected from nylon, silk, bamboo, glide floss, and polyethylene. Additionally, the filaments 112 may be woven, braided, round, or flat.

[0031] Depending on the material and shape, the filaments 112 may have a thickness of about 5 pm to about 3 mm. For example, the filaments 112 may be from about 10 pm to about 2 mm, about 25 pm to about 1 mm, about 50 pm to about 750 pm, or about 100 pm to about 500 pm thick. In some embodiments, the filaments 112 arc thin, and arc about 5 pm to about 250 pm thick. In some embodiments, the filaments 112 have medium thickness, and are about 250 pm to about 750 pm thick. In some embodiments, the filaments 112 are thick, and are about 750 pm to about 3 mm thick.

[0032] Additionally or alternatively, the handle portion 104 includes a neckpiece 114. In some embodiments, the neckpiece 114 engages the headpiece 102 at an interlock 116. In some embodiments, the engagement between the headpiece 102 and the handle portion 104 create an angle between the handle end of the handle portion 104 and the headpiece 102. In some embodiments, the angle is obtuse when referenced from arms 108 and the handle of the handle portion 104. In some embodiments, the angle provides improved access and use of the illustrative oral care device 100 in a user’s mouth. In some embodiments, the interlock 116 comprises or consists of a lock and key style engagement system where a portion of the headpiece 102 positively engages a portion of the handle portion 104 in a desired configuration.In some embodiments, the desired configuration may include a secure attachment between the headpiece 102 and the handle portion 104. Additionally or alternatively, the desired configuration may ensure that the desired angle between the headpiece 102 and handle portion 104 is achieved or preserved during use.

[0033] In some embodiments, the angle may be considered a contra- angle bend of between 1 and 30 degrees. In some embodiments, this allows the neck of the device to easily be oriented parallel to the biting surfaces of the teeth and the arms 108 perpendicular to the biting surfaces to facilitate sliding of the filament 112 and the embrasure brushes along crevices of the teeth.

[0034] In some embodiments, the headpiece 102 includes a scraper 118 that includes a surface that may be used for cleaning the tongue. In some embodiments, the scraper 118 is located on an opposite side from the filament 112. As such, the headpiece 102 may provide bilateral oral care, stimulation, or engagement, with the filament 112 for flossing on one side and the scraper surface for tongue cleaning on the other side. In some embodiments the scraper 118 comprises or consists of a ridgc / bladc or plurality of ridgcs / bladcs disposed on an edge or side of the base portion 106 distal to the portion of the base portion 106 that engages with the handle portion 104. In some embodiments, if the embrasure brush 110 or the filament 112 is connected to or located at an upper portion of the headpiece 102, then the scraper 118 may be disposed on an underside or a bottom surface of the headpiece 102.

[0035] In some embodiments, the handle portion 104 may be oriented along a length direction (e.g., along a y-direction). The filament 112 may extend along a width or a lateral direction (e.g., along an x-direction). The arms 108 may extend at least partially along a height direction (e.g., along a z-direction). Medial may refer to an x-direction from the arms 108 towards an exposed portion of the filament 112. In some embodiments, the embrasure brush 110 may be aligned with the filament 112 along either or both of the y-direction and the z-direction. Such alignment facilitates sliding of the filament 112 and the embrasure brush 110 along teeth surfaces. Additionally, such alignment preserves durability of the headpiece 102.

[0036] Figs. 2A-2C illustrate additional views of the illustrative oral care device 100. For example, Fig. 2A shows an oblique perspective view of illustrative oral care device 100. Fig.2B shows a plane view from one side (e.g., an underside) of illustrative oral care device 100. In this view, an example of the scraper 118 is visible. Fig. 2C shows an oblique perspective view of an illustrative device that includes a view of an end of the handle with a power button. In some embodiments, where a power button is included, a vibratory feature may be included. In some embodiments, with a vibratory feature, power may be provided by replaceable or rechargeable power devices, for example, a battery or capacitor.

[0037] In some embodiments, the handle portion 104 may be made of wood, plastic, metal, rubber, organic, biodegradable materials, among others or combinations thereof. It may have various finished, textures, colors and ergonomic shapes. In some embodiments, the handle portion 104 may be configured in length and shape to better suit pediatric use. In some embodiments, the length of the handle portion 104 may range from about 50 mm to about 250 mm, including from about 60 mm to about 240 mm, about 70 mm to about 220 mm, about 80 mm to about 200 mm, about 60 mm to about 180 mm, about 70 mm to about 160 mm, and about 80 mm to about 140 mm. In some embodiments, the length of the handle portion 104 ranges from 50 mm to 250 mm, 60 mm to 240 mm, 70 mm to about 220 mm, 80 mm to 200 mm, 60 mm to 180 mm, 70 mm to 160 mm, or 80 mm to 140 mm. In some embodiments, the length of the handle portion 104 may range from about 150 mm to about 200 mm, including from about 160 mm to about 200 mm, about 170 mm to about 200 mm, about 180 mm to about 200 mm, about 160 mm to about 1 0 mm, about 170 mm to about 1 0 mm, and about 180 mm to about 190 mm. In some embodiments, the length of the handle portion 104 ranges from 150 mm to 200 mm, 160 mm to 200 mm, 170 mm to about 200 mm, 180 mm to 200 mm, 160 mm to 190 mm, 170 mm to 190 mm, or 180 mm to 190 mm. Additionally, the width (or diameter) of the handle portion may range from about 5 mm to about 40 mm, including about 5 mm to about 30 mm, about 5mm to about 25 mm, about 10 mm to about 40 mm, about 10 mm to about 35 mm, about 10 mm to about 30 mm, about 10 mm to about 25 mm, about 15 mm to about 40 mm, about 15 mm to about 35 mm, about 15 mm to about 30 mm, or about 15 mm to about 25 mm. In some embodiments, the width of the handle portion ranges from 5 mm to 40 mm, 5 mm to 30 mm, 5 mm to 25 mm, 10 mm to 40 mm, 10 mm to 35 mm, 10 mm to 30 mm, 10 mm to 25 mm, 15 mm to 40 mm, 15 mm to 35 mm, 15 mm to 30 mm, or 15 mm to 25 mm. In some embodiments, the length of the handle portion 104 is about 184 mm and the width is about 20 mm. In some embodiments, the length of the handle portion 104 is 184 mm and the width is 20 mm. In some embodiments, the handle portion 104 may be hollowed out to allow placement of a motor and power source or solid thickness. In some embodiments, the handle portion 104 may have an approximately 160 degree contra- angle bend or a range of 90 to 180 degrees or it could be straight from top to bottom. Without this ergonomic shape, a user would have to open unusually wide to have the gum massagers in the correct orientation during use. In some embodiments, the handle portion 104 may be rigid or flexible where the handle narrows to meet the neck. In some embodiments, the handle portion 104 may be a single piece so when the replaceable head is secured in place, all movements of the user are directly translated to the floss / embrasure brush / tongue scraper. In some embodiments, the handleportion 104 may be made of multiple pieces. An on / off button or switch may be provided in the powered handle and a motor and power source.

[0038] In some embodiments, the handle portion 104 comprises or consists of a constant cross-section portion 103 corresponding to a gripping end and a variable cross-section portion corresponding to the distal end or corresponding to the neckpiece 114. Cross-sections of the handle portion 104 may refer to cross-sections cut along x-z planes which are normal to the length direction,. The length direction may be a direction along which the handle portion 104 predominantly extends. In some embodiments, the constant cross-section portion 103 has substantially constant cross-sectional surfaces along an entire length of, or along at least a portion of, the constant cross-section portion 103. In some embodiments, the variable crosssection portion is directly adjacent to the constant cross-section portion 103. In some embodiments, the variable cross-section portion has variable cross-sectional surfaces along an entire length of, or along at least a portion of, the variable cross-section portion. The constant or variable cross-sectional surfaces may be characterized according to width dimensions along a width direction and height dimensions along a height direction. The constant or variable cross-sectional surfaces may have contours that extend along the width direction and the height direction. In some embodiments, the handle portion 104 includes top, right side, left side, bottom, and front surfaces 200, 210, 220, 230, and 240, respectively. Within the constant crosssection portion 103, any of the aforementioned surfaces may be flat or arched. Within the variable cross-section portion, width dimensions of the top or bottom surfaces 200, 230 may change smoothly along the entire length of, or at least along a portion of the length of, the variable cross-section portion. Additionally or alternatively, height dimensions may change smoothly along the entire length of, or at least along a portion of the length of, the variable cross-section portion. Having a constant cross-section portion 103 directly adjacent to a variable cross-section portion may provide technical benefits of predictable and secure gripping in the constant cross-section portion 103 and ergonomic adaptation and mating of the variable cross-section portion with the headpiece 102.

[0039] Fig. 2D is an expanded top perspective view of an example oral care device 150. The oral care device 150 may be implemented in a same or similar manner as the oral care device 100. The oral care device 150 may include a power button 105 which may be disposed on a surface of the handle portion 104, such as the top surface 200 of the handle portion 104. Fig. 2D further illustrates the headpiece 102 which may include the arms 108 and the embrasure brushes 110 contacting the arms 108. The headpiece may be attached to an underside of the neckpiece 114. In some embodiments, the oral care device 150, or a separate oral care device,may include just the headpiece 102 without the handle portion 104. Fig. 2D may be implemented in conjunction with other features of the oral care device 100 described previously in any of previous Figs. 1 or 2A-2C.

[0040] Fig. 2E is an expanded front perspective view of an example embrasure brush 110 which may be connected either arm 108 within the example oral care device 150. Fig. 2E may be implemented in conjunction with other features of the oral care device 150 or 100 described previously in any of previous Figs. 1 or 2A-2D. In some embodiments, the embrasure brush 110 includes any or all of an embrasure conforming body 160, embrasure contacting protrusions 170, 172, 174, 176, 178, and 180 that wrap around or surround the embrasure conforming body 160, and a transitioning body 190 that directly contacts or is aligned with (e.g., height- wise) an exposed portion of the filament 112 and the embrasure conforming body 160. In some embodiments, the transitioning body 190 may be part of the embrasure conforming body 160.

[0041] The embrasure conforming body 160 may have cross-sections that conform to a geometry of an embrasure. More specifically, for example, the embrasure conforming body 160 has a geometry with a plurality of lateral surfaces, including but not limited to lateral surfaces 161 and 162. The lateral surfaces may extend predominately along a lateral direction (e.g., an x-direction). If the embrasure conforming body 160 is pyramidal or in a shape of a truncated pyramid, then the lateral surfaces 161 and 162 may be lateral faces. Cross-sections of the embrasure conforming body 160 may be defined along, or aligned with, a normal plane (e.g., a y-z plane) at different lateral positions. The normal plane may be normal with respect to the lateral direction. In some embodiments, the cross-sections of the embrasure conforming body 160 may include or conform substantially to the aforementioned concave quadrilateral cross-sectional geometry or the triangular cross-sectional geometry.

[0042] The embrasure contacting protrusions 170, 172, 174, 176, 178, and 180 may wrap around and be secured around an exterior of the embrasure conforming body 160. The embrasure contacting protrusions 170, 172, 174, 176, 178, and 180 may have a matching contour compared to the cross-sections of the embrasure conforming body 160. Although six embrasure contacting protrusions are shown, the embrasure brush 110 may have any number of embrasure contacting protrusions such as between 2 and 20 protmsions, or any subrange or number therebetween. The embrasure contacting protmsions 170, 172, 174, 176, 178, and 180 demonstrates a technical benefit because they provide improved contact with the embrasures which results in more effective and efficient cleaning. Further, the embrasure contractingprotrusions may be made of a flexible material, allowing the overall shape to deform and conform to the unique shape of the embrasure of each individual user.

[0043] In some embodiments, the embrasure contacting protrusions 170, 172, 174, 176, 178, and 180 have protrusion dimensions hi, h2, hs, hu, hs, he, respectively, along a single lateral surface (e.g., the lateral surface 161). The protrusion dimensions hi, I12, hs, hi, hs, and he may be defined along a direction within a normal (e.g., y-z) plane. The contours of the embrasure contacting protrusions 170, 172, 174, 176, 178, and 180 may be confined within normal planes. In some embodiments, the embrasure contacting protrusions 170, 172, 174, 176, 178, and 180 may have lateral distances di, d2, ds, cU, ds, de, respectively, measured along a lateral direction. The lateral distances may be defined with respect to a successive embrasure contacting protrusion or a successive feature. For example, the lateral distance di of the embrasure contacting protrusion 170 may correspond to a lateral distance between the embrasure contacting protrusions 170 and 172. As another example, the lateral distance de of the embrasure contacting protrusion 170 may correspond to a lateral distance between the embrasure contacting protrusion 180 and the transitioning body 190, which may directly connect an exposed portion of the filament 112 with the embrasure conforming body 160. In some embodiments, at least some of the aforementioned lateral distances are the same. For example, some or all of di, d2, ds, ds. and ds may be substantially the same.

[0044] In some embodiments, the lateral surface 161 has cross-sectional dimensions mi, m2, m3, n , ms, me, respectively, at the lateral positions of the embrasure contacting protrusions 170, 172, 174, 176, 178, and 180. Similar to the corresponding protrusion dimensions, the protrusion dimensions hi, I12, hs, hi, hs, and he may be defined along a direction within a normal (e.g., y-z) plane. The cross-sectional dimensions may be measured substantially along y and z-directions.

[0045] In some embodiments, the embrasure conforming body 160 may have a tapered profile, such that cross-sectional dimensions decrease as the embrasure conforming body 160 extends from the arm 108 towards the transitioning body 190. That is, the cross-sectional dimensions nn, m2, m3, nn, ms, me may be successively decreasing such that nn < m2 < m3 < nu < ms < me. In some embodiments, an amount of decrease may be substantially constant between any or all of the successive cross-sectional dimensions, such that a difference between mi and m2 substantially equals a difference between m2 and m3, and so on. In other embodiments, an amount of decrease may be nonconstant between any or all of the successive cross-sectional dimensions. For example, a difference between mi and m2 may be larger than adifference between m2 and m3, and so on. Even if the difference is nonconstant, the cross-sectional dimensions may decrease in a smooth, continuous manner.

[0046] The protrusion dimensions hi , I12, ft?, tu, hs, h6 may be successively decreasing such that hi < h2 < h < fu < hs < hr,. In some embodiments, an amount of decrease may be substantially constant between any or all of the successive protrusion dimensions, such that a difference between hi and I12 substantially equals a difference between I12 and hi, and so on. In other embodiments, an amount of decrease may be nonconstant between any or all of the successive protrusion dimensions. For example, a difference between hi and 112 may be larger than a difference between I12 and hs, and so on. Even if the difference is nonconstant, the protrusion dimensions may decrease in a smooth, continuous manner. In some embodiments, each protrusion dimension may exceed a corresponding cross-sectional dimension by a given proportion (e.g., between 1 percent and 25 percent of the cross-sectional dimension) or by a given amount. The given proportion may be defined in order to achieve a secure fit of the embrasure contacting protrusions 170, 172, 174, 176, 178, or 180 to the embrasure conforming body 160. The given proportion may be the same or different for different embrasure contacting protrusions 170, 172, 174, 176, 178, or 180.

[0047] The tapered profile of the embrasure conforming body 160, and tapered protrusion dimensions, demonstrate a technical benefit. As a result of the tapered profile and tapered protrusion dimensions, the oral care device 1 0 may be implemented for embrasure sweeping across a range of embrasure dimensions, either for different embrasures of a single subject or across different subjects. During cleaning, the transitioning body 190 and then the embrasure conforming body 160 may be pulled across embrasures. For example, a protrusion dimension such as he corresponding to the embrasure contacting protrusion 180 may be more closely conforming to smaller dimensioned embrasures. A section of the embrasure conforming body 160 that is closer to the transitioning body 190 may be used to clean the smaller dimensioned embrasures. On the other hand, a protrusion dimension such as hi corresponding to the embrasure contacting protrusion 170 may be more closely conforming to larger dimensioned embrasures. A section of the embrasure conforming body 160 that is farther away from the transitioning body 190 may be used to clean the larger dimensioned embrasures. That is, for larger dimensioned embrasures, the embrasure conforming body 160 may be pulled farther along laterally. Such a technical benefit improves efficiency and efficacy of embrasure cleaning, while obviating the need to have different sized oral care devices for different sized embrasures. Additionally, the relatively soft and flexible surface of the embrasure conformingbody 160 prevents injury of the embrasures even if some portions of the embrasure conforming body 160 do not fit embrasure dimensions.

[0048] The tapered profile also provides a technical benefit of sequential embrasure cleaning. For example, the embrasure contacting protrusion 180 may loosely contact the embrasures or a portion thereof, while the embrasure contacting protrusion 178 may more tightly contact the embrasures or a portion thereof. As a result, the embrasure contacting protrusion 180 may provide a first pass of embrasure cleaning, while the embrasure contacting protrusion 178 may provide a second pass of embrasure cleaning, and so on. This further increases efficiency and efficacy of cleaning within a single flossing session, which more comprehensively removes bacterial, plaque, films, and other buildups. As a result, the tapered profile mitigates occurrence and likelihood of oral disease such as gingivitis, periodontitis, and cavities.

[0049] Although not shown for the sake of simplicity, the protrusion dimensions and the cross-sectional dimensions and the lateral distances for different lateral surfaces (c.g., the lateral surface 162, or other lateral surfaces) may be implemented in a same or similar manner as the lateral surface 161. The protrusion dimensions, the cross-sectional dimensions, and the lateral distances for the different lateral surfaces may or may not be the same as for the lateral surface 161, but may be implemented using similar principles as described above. For example, the protrusion dimensions and the cross-sectional dimensions corresponding to different lateral surfaces may be tapering in a similar manner as described for the lateral surface 161.

[0050] In some embodiments, the embrasure conforming body 160 or any of the embrasure contacting protrusions 170, 172, 174, 176, 178, and 180 may generate vibrations (e.g., sonic or ultrasonic vibrations) to further dislodge any particles such as debris or plaque within embrasures. In some embodiments, one or more parameters of the vibrations may be adjustable depending on various factors. These factors may include a size of the embrasure, an extent of cleaning, or a degree of conformity between the embrasure and the embrasure conforming body 160 or any of the embrasure contacting protrusions 170, 172, 174, 176, 178, and 180.

[0051] The transitioning body 190 may include a rounded dp or a rounded end 192 at the exposed portion of the filament 112. Farther from the exposed portion of the filament 112, the transitioning body 190 may form into a pyramidal shape such as a triangular pyramid, thus forming a pyramidal end 194. A pyramidal end dimension ms corresponding to the pyramidal end 194 may be larger than, or extend past, a cross-sectional dimension m? corresponding to an end of the embrasure conforming body that contacts the transitioning body 190. In other embodiments, the pyramidal end dimension ms may substantially match the cross-sectionaldimension m?. The transitioning body 190 may have a lateral dimension of d?. In some embodiments, a lateral distance between the embrasure contacting protrusion 170 and an inner surface or inner face of the arm 108 may be do. In these embodiments, a total lateral distance that the embrasure brush 110 extends from the inner surface of the arm 108 may be approximately equal to or based on a sum of do, di, d2, ds, ch, ds, de, and d?.

[0052] Fig. 2F is an expanded bottom perspective view of the example oral care device 150. Any of the previously described features in Figs. 1 or 2A-2E may be applicable to Fig.2F. The oral care device 150 may include any or all of the handle portion 104 which may include the neckpiece 114. The oral care device 150 may include the headpiece 102, which includes the arms 108 and embrasure brushes 110 that extend from either or both of the arms 108 predominantly along a lateral direction (e.g., the x-direction). The headpiece 102 may include a scraper 118, which may include one or more rows (e.g., extending along the lateral direction) of edges. The edges may have same or varying degrees of sharpness. For example, some of the edges (e.g., certain rows) may be smooth while other edges may be serrated.

[0053] In various embodiments, a device (e.g., the oral care device 100) may be a multifunctional handheld oral hygiene system comprising various headpieces and a reusable, manual (non-vibrating) or electric (vibrating) or otherwise powered, handle. In some embodiments, the various headpieces (e.g., the headpiece 102) may be disposable. In some embodiments, the various headpieces may be attached to the various handles to provide the desired combination of cleaning features. A headpiece may include any combination of the following features: suspended dental floss, embrasure brushes, tongue scraper, bracket brush, toothface scrub, prosthetic sweep. Each of these headpieces will be interchangeable with either the manual or powered vibrating handles and may be intended to be disposed of after a certain number of uses and replaced with a new headpiece. The reusable handle may be hand powered, battery powered, rechargeable or plugged in.

[0054] In various embodiments, a device may include a handle having a neckpiece that interfaces with each of the various disposable combination headpieces. In some embodiments, the neckpiece may be uniquely designed and shaped. In some embodiments, the headpiece has a base portion and a pair of spaced- apart jaws extending perpendicular from the base to engage the neckpiece of the handle. In some embodiments, the engagement comprises the base to embrace the neckpiece in a snap-fit fashion once the headpiece is in correct alignment with respect to the handle. In this example, the snap-fit may provide an audible indication that the base and the neckpiece are properly engaged. In some embodiments, the snap-fit may providea detectable movement from an unsecured position to a secured position indicating that the base and the neckpiece are properly engaged.

[0055] In some embodiments, the device may use a lock and key style engagement system to ensure the headpiece is oriented correctly with the neck of the handle. In some embodiments, this configuration my comprise an asymmetric recessed feature found on the neck of the handle with a corresponding protrusion on the inside face of the base of the headpiece, or vice versa. These interacting features may be of various shapes and sizes. Additionally or alternatively, the interacting features may take the form of text or logos. In some embodiments, the interacting features may take the form of raised two dimensional images or reliefs, for example showing a raised (or depressed) silhouette of an object (e.g., an animal, vehicle, sports object, face, among others, or combinations thereof). In some embodiments, one or both of the interacting features or supporting material may be transparent or substantially transparent. In some embodiments, when the two interacting features are joined, one or both may be visible or partially visible to a user. The visible interacting features may provide an indication that the neckpiece and base are properly engaged.

[0056] In some embodiments, the headpiece may be held in place by snap-fitting. In some embodiments, the jaws of the headpiece have snap-fit projections and the other of the jaws of the headpiece defining corresponding recesses which together with the snap-fit projections securely engage the headpiece.

[0057] In some embodiments, the headpiece may engage the handle using various techniques and configurations. For example, first and second attachment mechanisms provided on the headpiece and handle, respectively, may use the snap-fit, magnetic, fixed / solid with head, tongue and groove, slide, screw on, straps, fastened, adhesive, among others, or combinations thereof. In some embodiments, the floss material include nylon, plastic, tetlon / glide, organic fibers, animal hair, among others, or combinations thereof.

[0058] In some embodiments, the headpiece may have various arms and lengths. For example, the length of the arms of the head may range from about 10 mm to about 40 mm. In some embodiments, the length of the arms of the head ranges from about 10 mm to about 35 mm, about 10 mm to about 30 mm, about 10 mm to about 25 mm, about 10 mm to about 20 mm, about 15 mm to about 35 mm, about 15 mm to about 30 mm, about 15 mm to about 25 mm, or about 15 mm to about 20 mm. In some embodiments, the length of the arms of the head is about 10 mm, about 10.5 mm, about 11 mm, about 11.5 mm, about 12 mm, about 12.5 mm, about 13 mm, about 13.5 mm, about 14 mm, about 14.5 mm, about 15 mm, about 15.5 mm, about 16 mm, about 16.5 mm, about 17 mm, about 17.5 mm, about 18 mm, about 18.5mm, about 19 mm, about 19.5 mm, or about 20 mm. In some embodiment, the length of the arms of the head is about 16.5 mm.

[0059] In some embodiments, the length of the arms of the head ranges from 10 mm to 40 mm (e.g., about 16.5 mm). In some embodiments, the length of the arms of the head ranges from 10 mm to 35 mm, 10 mm to 30 mm, 10 m to 25 mm, 10 mm to 20 mm, 15 mm to 35 mm, 15 mm to 30 mm, 15 mm to 25 mm, or 15 mm to 20 mm. In some embodiments, the length of the arms of the head is 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm. In some embodiment, the length of the arms of the head is 16.5 mm.

[0060] Additionally, the space between the arms may range from about 10 mm to about 40 mm. In some embodiments, the space between the arms ranges from about 10 mm to about 35 mm, about 10 mm to about 30 mm, about 10 m to about 25 mm, about 10 mm to about 20 mm, about 15 mm to about 40 mm, about 15 mm to about 35 mm, about 15 mm to about 30 mm, about 15 mm to about 25 mm, or about 15 mm to about 20 mm. In some embodiments, the space between the arms is about 15 mm, about 16 mm, about 17 mm, about 18 mm, about 1 mm, about 20 mm, about 21 mm, about 22 mm, about 23 mm, about 24 mm, or about 25 mm. In some embodiment, the length of the arms of the head is about 20 mm.

[0061] In some embodiments, the space between the arms ranges from 10 mm to 40 mm (e.g., about 16.5 mm). In some embodiments, the space between the arms ranges from 10 mm to 35 mm, 10 mm to 30 mm, 10 m to 25 mm, 10 mm to 20 mm, 15 mm, to 40 mm, 15 mm to 35 mm, 15 mm to 30 mm, 15 mm to 25 mm, or 15 mm to 20 mm. In some embodiments, the space between the arms is 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, or 25 mm. In some embodiment, the space between the arms is 20 mm.

[0062] In some embodiments, the size of the headpiece may be decreased in size to better suit pediatric users. In some embodiments, the arms may leave the base of the head at a perpendicular, acute or obtuse angle. In some embodiments, the headpiece may be made of wood, plastic, metal, rubber, organic, biodegradable materials, among others or combinations thereof. It may have various finishes, textures, colors, and ergonomic shapes.A. Examples of Anatomically-Shaped Embrasure Brushes on Headpieces Configured in Accordance with the Present Technology

[0063] In various embodiments, a headpiece provides features to clean interproximal surfaces of teeth while stimulating gum tissue, for example, teeth surfaces and gum tissuesurrounding an embrasure. In some embodiments, the device comprises anatomically shaped embrasure brushes. In some embodiments, the embrasure brushes serve multiple purposes. For example, soft textured structures are shaped to make contact with both tooth surfaces as well as the bridging gumline between them. This interaction may be available to one or both the outer and inner gingival sulci as both arms / jaws may have these structures. The materials to be used for these structures may include plastics, rubber, silicone, bristles or brushes. Various embodiments contemplate various shapes. For example, the structure may comprise or resemble a concave equilateral quadrilateral or hexagon from one view. In some embodiments, at least some of the edges of the structure may be smoothed. This may have an overall tapered shape forming a cone or pyramid like profile where the base end is attached to the flossing arm, and the floss passes through the structures on each arm and exits from a structure apex, bridging the two arms.

[0064] In some embodiments, a basic shape of the embrasure brush (e.g., the embrasure brush 110) may be a pyramid where the base of the pyramid is a concave equilateral hexagon which lies flat against an extension arm and the other 6 faces of the pyramid taper and converge at the apex of the pyramid from which the floss emerges. In other embodiments, the shape of the embrasure brush 110 may be a truncated pyramid. In some embodiments, the structure may consist of various materials. For example the core of the brush may be a simple plastic cone shape with rubber overlay forming the more detailed pyramid structure. Small bristles (rubber or silicon / plastics / nylon / biodegradable materials) may line the ridges of the three acute line angles of the pyramid. In some embodiments, when in use, the orientation of the 3 acute line angles, with their rows of bristles, relative to the users anatomy are as follows: the top row of bristles rides along the underside of the interproximal contact between two teeth and the other two rows of bristles ride along the junction between the teeth and the gum tissue. The two faces of the gum massager that come in contact with the teeth, and are not oriented over the gums, may be texturized with a series of ribs that may engage the tooth surface to scrape, collect, and remove plaque and debris from the tooth surface. Other shapes may work include a cone, triangle, cylinder, starshape, gradual taper, stepped taper. Spine configuration may also differ. Non-limiting examples of spine configuration include equally spaced, random placement, or patterned configurations. The embrasure brushes may be scaled down in size or shape to better suit pediatric use. Differing rigidity or materials may be used to create the same effect.

[0065] Figs. 3A-3E illustrate example embodiments of flosser headpieces with embrasure brushes. Example embodiments include ribbings that circumscribe or wrap around the brush body. These ribbings may be easier to manufacture and form compared to multiple individualfinger-like or hair- like projections that are molded as part of the brush body. The ribbings may be formed separately from the brush body based at least on their larger defined shape and size, allowing for customizability at least with respect to the number of ribbings to form on a given embrasure brush. Further, the ribbings being a separate construction from the brush body improves structural stability of the brushes and the floss filament. Movement of finger-like projections / bristles cause movement of the brush body, which places stress or tension on the floss filament. On the other hand, example embodiments implementing ribbings reduce instability of the brush body due to separate construction.

[0066] In Fig. 3A, a front view of a headpiece 102 with a base portion 106 and two arms 108 is shown. Each arm 108 includes or is attached to an embrasure brush 110. Each embrasure brush 110 includes a brush body 312 that is a tapered structure, thus including a body end or base end 314 that interfaces with the arms 108 and a tip end 316 away from the arms 108. In some embodiments, the brush body 312 may be implemented as the embrasure conforming body 160 previously described in Fig. 2E. In some embodiments, the tip end 316 may be implemented as the transitioning body 190 previously described in Fig. 2E. In some embodiments, the base end 314 corresponds to a largest cross-section dimension of the brush body (e.g., the base surface or the arm contacting surface). As shown, the tip ends 316 of the embrasure brushes 110 on both arms are aligned in either or both a y or z-direction such that an exposed portion of the filament 112 may extend between both of the tip ends 316. The tip ends 316 of the embrasure brushes 108 may be rounded and function as a leading edge that allows the embrasure brushes 110 to slide into the embrasure space between teeth. The tip ends 316 may maintain a same cross-sectional shape as the embrasure brashes. In some embodiments, the filament 112 is attached to the two arms 108 and pass through (and exit at the tip of) the embrasure brashes 110, which are positioned at the attachment points on the two arms 108. Figs. 3B and 3C show closer front views of the embrasure brushes 110.

[0067] Each embrasure brash 110 may be similarly dimensioned. A combined length of the embrasure brashes 110 is less than a total length or gap between the two arms, so that some length of the filament is exposed, or not buried within an embrasure brash 110. As such, a length of an embrasure brash 110 is less than 50% of a total gap between the two arms. In some embodiments, the length of an embrasure brash 110 is approximately 33% of the total gap between the two arms, resulting in each embrasure brash 110 and the exposed length of filament 112 being approximately the same length. In some embodiments, the length of the embrasure brash 110 is less than 40% of the total arm gap, less than 33% of the total arm gap, less than 30% of the total arm gap, or less than 25% of the total arm gap. In some embodiments,the headpiece may lack embrasure brushes (an embrasure brush length of 0% of the total arm gap). In some embodiments, the length of exposed filament between embrasure brushes 110 is at least 6.75 mm, or may correspond to an average width of contact between molar teeth. In other embodiments in which the oral device is used in pediatric applications, the length of exposed filament may be smaller and may correspond to the average width of contact between molar teeth in pediatric patients / users.

[0068] Each embrasure brush 110 includes a plurality of ribbings 402 that each wrap around, skirt around, or surround a cross-section of the brush body 312. In some embodiments, the ribbings 402 may be implemented as any of the embrasure contacting protrusions 170, 172, 174, 176, 178, and 180 previously described in Fig. 2E. In some embodiments, each ribbing 402 has the same cross-sectional shape as the cross-section of the brush body 312.

[0069] The ribbings 402 extend perpendicularly away from a central axis of the brush body 312 extending from the base end 314 to the tip end 316 and are composed of a flexible material allowing for the ribbings 402 to flex through angles more than and less than normal / perpendicular from the central axis. In some embodiments, the ribbings 402 are composed of a material with different rigidity or flexibility than the brush body 312, thus allowing the ribbings 402 to flex while minimizing movement of the brush body 312 itself. The ribbings 402 or the brush body 312 may be composed of one or more rubber, rubber-like, silicone, or silicone-like materials, such as thermoplastic elastomers (TPE), silicone rubber, ethylene vinyl acetate (EVA), polyurethane (PU) foam, santoprene, or the like.

[0070] The ribbings 402 may be uniformly spaced out along the length of an embrasure brush 110, and in some embodiments, the uniform spacing between ribbings 402 is greater than or equal to a thickness of the ribbings 402. The uniform spacing may be between one and two times the ribbing thickness, between one and 1.5 times the ribbing thickness, between one and 1.25 times the ribbing thickness, or between one and 1.2 times the ribbing thickness. An embrasure brash 110 may include a maximum number of ribbings 402 while satisfying this spacing sparsity constraint.

[0071] Figs. 3D, 3E, and 3F are different views of an example headpiece. Any of previously described features or concepts in any of Figs. 1 , 2A-2F, or 3 A-3C may be applicable to Figs. 3D, 3E, and 3F. In Figs. 3D, 3E, and 3F, the headpiece 102 may include the base portion 106, the arms 108 extending from opposite sides of the base portion 106, and the embrasure brash 110 extending from upper portions of either or both of the arms 108. In some embodiments, the embrasure brush 110 contacts either of the arms 108 at the base end 314. As previously illustrated in Fig. 2E, the embrasure brush 110 may include any or all of theembrasure conforming body 160, the embrasure contacting protrusions 170, 172, 174, 176, 178, 180, and the transitioning body 190. Figs. 3E and 3F further illustrate the tongue scraper 108. In Figs. 3E and 3F, a filament is not shown for simplicity, although it is understood that the headpiece illustrated in Figs. 3E and 3F may contain a filament.

[0072] Fig. 3D further illustrates example dimensions. It is understood that the example dimensions are not meant to be construed as limiting, and that any of the actual dimensions may differ from the illustrated dimensions by a given tolerance. As nonlimiting examples, the given tolerance may be anywhere from between + / - 0 and 50 percent, between + / - 0 and 25 percent, + / - 0 and 10 percent, + / - 0 and 5 percent, or any range or value therebetween. In Fig.3F, some of the labels of the embrasure contacting protrusions (e.g., 174, 178) were left out on the right side but it is understood that the embrasure brush 110 on the right side may be implemented in a same or similar manner as the embrasure brush 110 on the left side.

[0073] In Fig. 3D, example thicknesses, measured along the lateral or x-direction, of each of the embrasure contacting protrusions (e.g., the embrasure contacting protrusion 180) may be approximately 0.3 mm. In some embodiments, some of the embrasure contacting protrusions may have different thicknesses or widths from one another. For example, the embrasure contacting protrusion 176 may have a thickness of approximately 0.35 mm. In some embodiments, thicknesses of the embrasure contacting protrusions may range from 0.2 mm to 0.5 mm, or may conform to dimensions of crevices between different teeth. In some embodiments, a lateral distance between two embrasure contacting protrusions may be 0.475 mm. In some embodiments, an example distance between two transitioning bodies 190 may be approximately 7.5 mm. This example distance may either include or exclude the lateral dimensions of the rounded ends 192. In some embodiments, this example distance may correspond approximately to the length of the exposed portion of the filament 112. In some embodiments, a lateral dimension of the transitioning body 190 may be approximately 1.5 mm. In some embodiments, a lateral dimension of a pyramidal portion of the transitioning body 190 may be approximately 1.15 mm. In some embodiments, a lateral dimension from the base end 314 to the rounded end 192 of the transitioning body 190 may be approximately 6.75 mm. In some embodiments, a lateral dimension between farthest embrasure contacting protrusions 170 of the two opposing embrasure brushes 110 is approximately 19 mm. In some embodiments, a lateral distance between the opposing arms 108 is approximately 21 mm.

[0074] Figs. 3D and 3E illustrate example mating features 302, 304, 306, which may be secured to the interlock 116 of the handle portion 104. In some embodiments, the mating features 302, 304, 306 may include protruding features. In some embodiments, the matingfeature 302 may be a first mating feature, the mating feature 304 may be a second mating feature, and the mating feature 306 may be a third mating feature. In some embodiments, the mating feature 302 may have an opposite orientation compared to the mating feature 306. In some embodiments, the mating features 302 and 306 may be substantially equidistant with respect to a lateral direction from a center axis of the second mating feature, the center axis extending along a height direction or a length direction and running through a geometric center of the second mating feature. For example, such an arrangement of features may facilitate secure attachment of the handle portion 104 to the headpiece 102, and in some scenarios, attachment in two possible orientations of the handle portion 104.

[0075] In some embodiments, the interlock 116 of the handle portion 104 includes a recessed groove and embedded recessed features positioned within the recessed groove. The embedded recessed features may be complementary with the mating features 302, 304, 306. For example, a first embedded recessed feature may be complementary to the mating feature 302 or 306, the second embedded recessed feature may be complementary to the mating feature 304, and the third embedded recessed feature may be complementary to the mating feature 306 or 302. fhe third embedded recessed feature may have an opposite orientation relative to an orientation of the first embedded recessed feature, and the first embedded recess and the third embedded recess may be substantially equidistant with respect to a lateral direction from a center axis of the second embedded recessed feature.

[0076] In some embodiments, the headpiece 102 may be secured to the handle portion 104 using other mechanisms such as a tension fit. In some embodiments, the headpiece 102 may include one or more ridges (e.g., open ridges) that are configured to engage with one or more mounts, recesses, or grooves of the handle portion 104. In some embodiments, the one or more ridges, upon engaging with the one or more grooves, may deflect or flex. Once the one or more ridges reach a certain state of deflection (e.g., maximum deflection), the one or more ridges may settle into or catch a fixing position on the grooves. This may secure the handle portion 104 to the headpiece 102.

[0077] Fig. 3G is a front view of an example foundational assembly or the foundational component 352, which may include a portion of the headpiece 102. The foundational component 352 may include any or all of the base portion 106, the arms 108, and one or more substrate cores or substrates 354. In some embodiments, the foundational component 352 contains the filament 112. In other embodiments, the foundational component 352 is devoid of the filament 112. In some embodiments, the foundational component 352 is devoid of the embrasure brush 110 or any of the ribs 402. Together, the base portion 106, the arms 108, andthe one or more substrates 354 may form a unitary component (e.g., plastic) that imparts rigidity to the headpiece 102. In some embodiments, as further described in Fig. 6A, the foundational component 352 may include one or more stabilizing structures or stabilizing cores that prevent flexion of the arms 108. The substrates 354 may extend from an outer face or outer surface 107 of the respective arms 108 to an inner face or inner surface 109 of the arms, and extend medially from the inner surface 109 up until a first distance or a first length si past the inner surface 109. In some embodiments, the first length si may be approximately the same or different from the lateral distance from the inner surface 109 of the embrasure brush 110, which may be approximately equal to or based on a sum of do, di, d2, ds, dr, ds, de, and d?. The filament 112 may extend through an internal region of the substrates 354 to opposite sides of the arms 108 to increase the strength of the filament 112. The filament 112 may include one or more unexposed portions. The foundational component 352 may or may not include the mating features 302, 304, and 306.

[0078] The embrasure brushes 110 may be joined or mated to the substrates 354, for example, via injection molding. The embrasure brushes 110 may be formed onto the substrates 354 via application of a mold. In this manner, the flexible or less rigid embrasure brushes 110 may be disposed over the substrates 354. The embrasure brushes 110 may be much more securely attached to the arms 108 of the headpiece 102, compared to having the embrasure brushes 110 being directly attached to the arms 108 without the substrates 354. This provides a technical benefit of having a sturdy underlying structure of the foundational component 352 while maintaining flexibility of the embrasure brushes 110 which are placed over the substrates 354. This also ensures alignment (e.g., in either or both of the y and z-directions) of the embrasure brushes 110 with the filament 112. This facilitates safer and more effective utilization of the embrasure brushes 110. In some embodiments, the foundational component 352 includes a first material having a first rigidity (e.g., plastic), while the embrasure brushes 110 include a second material having a second rigidity less than the first rigidity (e.g., rubber), which is much less likely to cause dental injuries.

[0079] In some embodiments, the substrates 354 contain variable cross-sections as the substrates 354 extend along a lateral direction. The cross- sections may be defined by normal planes (e.g., y-z planes) that are orthogonal to the lateral direction (e.g., the x- direction). In some embodiments, the substrates 354 include profiles of cones, truncated cones, frustums, or cylinders. In some embodiments, the headpiece 102 includes some or all of the components described within the foundational component 352, such as the substrates 354. In some embodiments, the substrates 354 may be part of the embrasure brush 110.

[0080] In some embodiments, one or more embrasure cleaning features are disposed over the substrates 354. The embrasure cleaning features may include portions of the embrasure brush 110 or different embrasure cleaning features. The one or more embrasure cleaning features may extend medially from the inner surface 109 of the respective arm and terminating at the first length or a second length past the inner surface 109 of the respective arm 108, the one or more embrasure cleaning features comprising a second material with a second rigidity less than the first rigidity.

[0081] Figs. 4A and 4B illustrate details of the ribbings 402 and the brash body 312, in some embodiments. In some embodiments, each ribbing 402 has the same cross-sectional shape as the cross-section of the brash body 312. In some embodiments where the brash body 312 has a cross-sectional shape that is a substantially concave quadrilateral (e.g., similar to an arrowhead) that mimics an embrasure shape, the ribbings 402 also have the concave quadrilateral cross-sectional shape. Because the ribbings 402 extend out from the cross-section of the brash body 312, each ribbing 402 represents a scaled-up version of the shape of the cross-section. As further demonstrated in Fig. 4A, the substantially concave quadrilateral cross-sectional shapes that mimic embrasure shapes. Each edge of the substantially concave quadrilateral shape may not be straight and may be curved. For example, each edge of the cross-sectional shape may cave inwards. The cross-sectional shape of the brash body 312 and the ribbings 402 may not be strictly polygonal.

[0082] Figs. 5A-5D illustrate, in the inner view at the right portion of the Fig. (e.g., from a medial point between the two arms 108), fitting of the substantially concave quadrilateral cross-sectional shape into an embrasure in which cavities and gum disease may occur. Figs. 5A-5D may be implemented in conjunction with any applicable principles from previous Figs. 1, 2A-2F, 3A-3G, or 4A-4B.An embrasure 450 includes an embrasure apex 452 (where cavities may be more likely to occur) and embrasure corners 454 (where gum disease may be more likely to occur) based on which example embrasure brashes are shaped, in accordance with embodiments of the present technology. The embrasure apex 452 and the embrasure comers 454 may constitute different embrasure surfaces. The previously described embrasure brashes 110 may have a profile that conforms to the geometry of the embrasure 450. The embrasure brashes 110 are configured to clean the different embrasure surfaces, which prevents a wide range of dental conditions such as cavities and gum disease.

[0083] Figs. 6A-6C illustrate example core structures located within or part of embrasure brashes of a headpiece. In some embodiments, the core structures may be elements of the embrasure brashes 110. As discussed, the embrasure brash 110 includes flexible portions thatdislodge, brush, scrape, stimulate, and otherwise interact with embrasure surfaces as the embrasure brush 110 is slid into and out of an embrasure. In some embodiments, the ribbings 402 on the embrasure brush 110 are composed of flexible material (e.g., rubber, silicone) and may function as “bristles” of the brush. Figs. 6A-6C may be implemented in conjunction with any applicable principles from previous Figs. 1, 2A-2F, 3A-3G, 4A-4B, or 5A-5D.

[0084] The example core structures provided in Figs. 6A-6C address technical problems of existing devices. The core structure may be secured to and through an arm structure 502, which may be a rigid portion of an arm 108. An arm 108 of the flosser headpiece may comprise or consist of the arm structure 502 (e.g., composed of a rigid plastic). In some embodiments, additionally or alternatively, the arm 108 may include or be attached to a soft overlayer or overmold (hereinafter “overmold”) (e.g., composed of a soft rubber, composed of a biologically compatible material). The overmold may be joined or mated over the core structure by injection molding, for example. The overmold may correspond to the embrasure brushes 110. Rigid plastics as referred to herein with respect to the arm structure 502, the core structure stabilizing embrasure brushes, and other portions of an oral hygiene / care device may include one or more of polypropylene, acrylonitrile butadiene styrene (ABS), polyethylene terephthalate (PET), polycarbonate (PC), or the like.

[0085] A brush core 504 may extend out from the arm structure 502 and is internal within an embrasure brush 110. In some embodiments, the brush core 504 may be implemented as the one or more substrates 354 described in Fig. 31. The brush core 504 may extend along at least a portion of a central lateral axis of the brush body 312 between the base end 314 and the tip end 316. The brush core 504 may be composed of a rigid plastic material and may be hollow through its length, allowing the floss filament 112 to pass through. The brush core 504 may be tapered (e.g., conical) or cylindrical. In some embodiments, the brush core 504 contains a different profile compared to the profile of the embrasure brush, which may be pyramidal or a truncated pyramid.

[0086] In some embodiments, the brash core 504 is connected to one or more stabilizing structures such as an outer stabilizing component, outer stabilizing core, or core base 506 located on an outer or lateral face of the arm structure 502. In some embodiments, the brash core 504 and the one or more stabilizing structures may be part of the embrasure brash 110. In some embodiments, the brash core 504 and the core base 506 form one body that passes through the arm structure 502. The brash core 504 and the core base 506 may be further connected to an inner stabilizing component, inner stabilizing core, or inner stabilizer 508 (e.g., another of the stabilizing structures) that is located on or contacts the inner or medial face 507of the arm structure 502 where the brush core 504 is also located or also contacts. The inner stabilizer 508 may also extend through the arm structure 502 to connect with the core base 506 on the opposite face of the arm structure 502. The inner stabilizer 508 may also be part of the same unitary body as the brush core 504 and the core base 506, and the brush core 504 and the inner stabilizer 508 may be formed as projections or extensions from the core base 506.

[0087] The core base 506 and the inner stabilizer 508 each span across an area on the outer / lateral face and the inner / medial face of the arm structure 502, respectively. The core base 506 and the inner stabilizer 508 span or lay across an area having a size or shape configured to minimize or counteract lateral movements of the brush core 504. For example, forces pushing against the sides of the brush core 504 may be distributed to an interface between the core base 506 and inner stabilizer 508 and corresponding areas on the arm structure 502. In some embodiments, as shown in Figs. 6B and 6C, the core base 506 mimics the cross-sectional shape of an embrasure (e.g., substantially concave quadrilateral or arrowhead-liked), and the shape of the core base 506 may be oriented to align (e.g., height-wise) or match with the embrasure-like cross-sectional shape of the brush body 312 on the other side of the arm structure 502. This provides a technical benefit of ensuring proper orientation and alignment of the headpiece 102 or the oral hygiene / care device 150 such that the embrasure brush 110 may easily slide into an embrasure. Yet another technical benefit is that the core base 506 is shaped to effectively absorb forces to dampen their impact in a region that is most likely to receive such forces.

[0088] The inner stabilizer 508 may occupy an area between the embrasure brush 110 and the end of the arm 108. In some embodiments, the inner stabilizer 508 is triangularly shaped, and the triangular shape of the inner stabilizer 508 extends into a concavity of the embrasurelike shape of the embrasure brush 110. In particular, the inner stabilizer 508 may be shaped (e.g., as a triangle) to minimize flexing of the brush core 504 inwards or outwards, or in directions parallel to the arm 108. A height (e.g., a size along a height direction) of the inner stabilizer 508 may be equal to or less than a height of the embrasure brush 110. The inner stabilizer 508 and the core base 506 may be oriented parallel to each other and offset laterally, for example, by a width of the arm structure 502 (e.g., measured along an x-direction).

[0089] As discussed, the core structure including the brush core 504, the core base 506, and the inner stabilizer 508 (which may all be one body pass through the arm structure 502) form a rigid internal structure for a portion of the headpiece, and the core structure may be overlaid with softer materials (e.g., rubber, silicone) for user comfort, aesthetics, biocompatibility, waterproofing, or the like. The brush core 504 in particular may be buried orenveloped in the brush body 312, which may provide the embrasure- like cross-sectional shape, and the brush body 312 may be composed of softer / flexible materials such as rubber or silicone. As demonstrated in Fig. 6C, other portions of the core structure however may remain exposed through an overlayer. For example, the core base 506 is not covered, which may assist a user in ascertaining the orientation of the embrasure-like cross-section of the embrasure brushes 110. As a further example, the inner stabilizer 508 is not covered by a rubber / silicone overlayer. The inner stabilizer 508 may be exposed through a rubber / silicone overlayer, and the rubber / silicone overlayer may rise to a height (above the inner face of the arm 108) that is approximately equal to the height of the inner stabilizer 508 (or a width of the inner stabilizer 508 away from the inner face of the am 108). As such, the inner stabilizer 508 may push (laterally, or parallel to the inner face of the arm 108) against a side edge or face of the overlayer, providing further stability against flexing of the brush core.B. Examples of Scraper Surfaces on Headpieces Configured in Accordance with the Present Technology

[0090] Cleaning the tongue is important. In various embodiments, a device may include a scraper, and in some embodiments, the scraper is located on the device headpiece. In some embodiments, where the concave face of the base of the head engages with the neck of the handle, the exposed convex (or flat) face of the base may act as a tongue scraping surface with single or multiple blades of decreasingly or equally scalloped edges ending with a squeegeelike gathering blade. These blades may bend or arch (or not) toward the top of the handle when properly oriented, acting as a gathering scoop as it is moved in the posterior to anterior direction along the tongue surface, repeated over and over.

[0091] In some embodiments, the tongue scraper on the back of the replaceable floss head may have an anatomic and functional shape. Other embodiments may be less anatomical and functional. An example of a tongue scraper may be convex in both the x-y axis and also the y-z axis. This allows the center (and all other parts) of the tongue to be cleaned, and also allows the debris that is scraped to be corralled and contained by the curved ends. In some embodiments, the first of the 3 silicon / rubber / plastic blades of the tongue scraper with its multiple tinges acts like a comb or rake as it lifts and disrupts debris, the second blade with its scalloped edge will continue to lift and gather debris. The third straight-edged blade squeegees and removes all the bacteria and debris. Other embodiments use single blades or multiple blades in other combinations. In some embodiments, various heights, lengths or materials ofthe blades may have similar effects. Vibration may add to its effectiveness and repeating this action over the entire area of the top surface of the tongue would be encouraged.

[0092] Figs. 7A-7B illustrate aspects of example scrapers or scraper surfaces disposed on headpieces of oral hygiene / oral devices, according to embodiments disclosed herein. Figs. 7A-7B may be implemented in conjunction with any applicable principles from previous Figs. 1, 2A-2F, 3A-3G, 4A-4B, 5A-5D, or 6A-6C. Fig.7A shows a side view of a scraper 118. Example embodiments of a scraper 118 include projected rows 602, or rows within which one or more projections are aligned. For example, the illustrated embodiment of Fig. 7A includes four projected rows 602. As shown in Fig. 7B, each row may either be a blade row 602A that is a blade spanning across a width of the scraper 118 or a bristle row 602B that includes multiple bristles arranged or positioned along the width of the scraper 118. Bristle rows 602B may resemble blade rows 602A but for the lack of material between each bristle (e.g., extruded from an initial or prior blade form).

[0093] In a particular embodiment shown in Fig. 7A, a first top-most row is a blade row 602 A, and one or more rows beneath the first top-most row (e.g., closer to the gripping portion of the device handle) are bristle rows 602B. With the top-most row (e.g., furthest from the device handle) being a blade row 602A, debris dislodged by the lower rows may be gathered and scraped, as the scraper 118 moves in a direction of the device handle (e.g., downwards on the page of Fig. 7A).

[0094] As further demonstrated in Fig. 7A, each projected row 602 of the scraper 118 has a blade cross-section, and specifically, the cross-section is a single-bevel blade having a flat edge and a slant edge. In some embodiments, a top-most row that is a blade row 602A has the slant edge of its single-bevel blade cross-section facing downwards towards the handle, allowing the top-most row to gather and scrape debris. In some embodiments, lower rows that are bristle rows 602B have their flat edges facing downwards to better dislodge and push debris.

[0095] Fig. 8A illustrates a bottom perspective view of an example oral care device cover 700, in accordance with embodiments of the present technology. The oral care device cover may include an open bottom surface 702 (e.g., parallel with the x-y plane), a left side surface 704 (e.g., parallel with the y-z plane), a front surface 706 (e.g., approximately oriented with the x-z plane), a right side surface 708, a back surface 710, and a closed top surface 712. In some embodiments, the front surface 706 or the back surface 710 may be arched, such as being outwardly arched. In some embodiments, the oral care device cover 700 may be configured to house the oral care device 150. In some embodiments, the oral care device cover 700 mayinclude one or more cleaning chemicals configured to clean the oral care device 150 when the oral care device 150 is housed within the oral care device cover 700.

[0096] Figs. 8B-8F are different views of an example oral care device cover 750, which may be implemented in a similar manner as the oral care device cover 700 of Fig. 7 A. The oral care device cover 750 may include an open bottom surface 752, a left side surface 754, a front surface 756, a right side surface 758, a back surface 760, and a closed top surface 762. In some embodiments, the oral care device cover 750 includes one or more chamfered or filleted edges, such as chamfered edge 761 along the top surface 762. In some embodiments, the front surface 756 (or the back surface 760) may be arched such as being arched outward.

[0097] Fig. 9 illustrates an example oral care device kit 800, which may contain the oral care device cover 750 or 700, along with the housed oral care device 150.C. Additional Embodiments of Oral Care / Hygiene Devices

[0098] To solve the technical problems discussed herein, among others, the following technical solutions may be adopted by some preferred embodiments.

[0099] Embodiment 1. An attachable headpiece for a flosser device, comprising: a headpiece body; a first arm and a second arm disposed on opposite ends of the headpiece body and extending away from the headpiece body, the first arm and the second arm extending in parallel in a same direction, each of the first arm and the second arm having an inner face and an outer face; a floss filament extending between the inner face of first arm and the inner face of second arm; and two embrasure contacting interfaces each extending from the inner face of one of the first arm or the second arm along the floss filament up to a first position, each embrasure contacting interface configured to support the floss filament configured to be pushed into a dental embrasure in response to a lateral movement of the attachable headpiece while the floss filament is disposed within the dental embrasure between two adjacent teeth, wherein each embrasure contacting interface comprises: a substrate core within each embrasure contacting interface and spanning through a respective arm to the outer face of the respective arm, an overmold disposed around the substrate core and defining cross-sections of each embrasure contacting interface, the cross-sections having a geometry corresponding to a profile of the dental embrasure and being tapered in size away from the respective arm, and a plurality of embrasure contacting protrusions around the overmold and located at different lateral positions along each embrasure contacting interface, each embrasure contacting protrusion proportionally enlarging a cross-section defined by the overmold at a corresponding lateral position.

[0100] Embodiment 2. The attachable headpiece of embodiment 1, wherein the substrate core is comprised of a rigid plastic, and the overmold and the plurality of embrasure contacting protrusions are comprised of a flexible rubber.

[0101] Embodiment 3. The attachable headpiece of any one or more of embodiments 1 to 2, wherein a sum of a lateral dimension of each of the two embrasure contacting interfaces is less than a total lateral dimension of the headpiece body between the inner face of the first arm and the inner face of the second arm.

[0102] Embodiment 4. The attachable headpiece of any one or more of embodiments 1 to 3, wherein the lateral dimension of each of the two embrasure contacting interfaces is approximately one-third of a lateral dimension of the floss filament spanning from the inner face of the first arm to the inner face of the second arm.

[0103] Embodiment 5. The attachable headpiece of any one or more of embodiments 1 to 4, wherein the substrate core within each of the two embrasure contacting interfaces is connected to a first flat base across an area on the outer face of the respective arm and a second flat base across an area on the inner face of the respective arm that is separate from each embrasure contacting interface.

[0104] Embodiment 6. The attachable headpiece of embodiment 5, wherein the second flat base comprises a triangular geometry that extends into a concave edge of the cross-sections of each embrasure contacting interface at the inner face of the respective arm.

[0105] Embodiment 7. The attachable headpiece of embodiment 5, wherein the first flat base is exposed through an overmold layer encasing the respective arm.

[0106] Embodiment 8. The attachable headpiece of any one or more of embodiments 1 to 7, wherein the plurality of embrasure contacting protrusions are uniformly spaced along a lateral direction.

[0107] Embodiment 9. The attachable headpiece of any one or more of embodiments 1 to 8, wherein a lateral spacing among the embrasure contacting protrusions is greater than a thickness of the plurality of embrasure contacting protrusions.

[0108] Embodiment 10. The attachable headpiece of any one or more of embodiments 1 to 9, wherein the substrate core within each embrasure contacting interface is conical or cylindrical.

[0109] Embodiment 11. The attachable headpiece of any one or more of embodiments 1 to 10, wherein the plurality of embrasure contacting protrusions are formed of flexible rubber such that the plurality of embrasure contacting protrusions are configured to be used as bristles for each embrasure contacting interface.

[0110] Embodiment 12. The attachable headpiece of any one or more of embodiments 1 to 11, wherein the plurality of embrasure contacting protrusions includes at least six embrasure contacting protrusions.

[0111] Embodiment 13. The attachable headpiece of any one or more of embodiments 1 to 12, wherein the overmold includes a rounded tip for each embrasure contacting interface.

[0112] Embodiment 14. The attachable headpiece of any one or more of embodiments 1 to 13, further comprising: a scraper surface disposed on the headpiece body opposite from the first arm and the second arm, the scraper surface comprising one or more ridges for scraping a surface.

[0113] Embodiment 15. The attachable headpiece of embodiment 14, wherein the one or more ridges each have a single-bevel blade cross-section.

[0114] Embodiment 16. The attachable headpiece of embodiment 14, wherein the one or more ridges includes a blade row and a bristle row.

[0115] Embodiment 17. An oral care device comprising: a handle comprising a gripping portion and a neckpiece; and a headpiece removably coupled to the neckpiece, the headpiece comprising: a first arm and a second arm disposed on opposite ends of a headpiece body and extending parallel to one another from the headpiece body in a same direction, each of the first arm and the second arm including an inner face and an outer face; a floss filament extending between the inner face of the first arm and the inner face of the second arm along a lateral axis perpendicular to the first arm and the second arm, the lateral axis being located inset from a tip of the first arm and a tip of the second arm; and extending from each of the first arm and the second arm, an embrasure contacting interface extending medially from the inner face of a respective arm and having cross-sections centered about the lateral axis and tapered in size away from the inner face, wherein the cross-section has a concave quadrilateral geometry corresponding to a profile of a dental embrasure, and wherein the embrasure contacting interface comprises: a substrate core comprising a flat base across the outer face of the respective arm and a first projection that extends from the flat base through the respective arm along the lateral axis up to a first lateral distance past the inner face of the respective arm, the substrate core being of a first material with a first rigidity: an overmold disposed around the first projection of the substrate core and defining the cross-section of the embrasure contacting interface, the overmold being of a second material with a second rigidity less than the first rigidity; and a plurality of embrasure contacting protrusions each surrounding the overmold and located at different lateral positions and scaling up the cross-section of the embrasure contacting interface at each corresponding lateral position.

[0116] Embodiment 18. The oral care device of embodiment 17, wherein the first material with the first rigidity is a plastic, and the second material with the second rigidity is a rubber, and wherein the plurality of embrasure contacting protrusions is comprised of the second material.

[0117] Embodiment 19. The oral care device of any one or more of embodiments 17 to 18 wherein a sum of a first lateral dimension of the embrasure contacting interface on the first arm and a second lateral dimension of the embrasure contacting interface on the second arm is less than a total lateral dimension of the headpiece body between the inner face of the first arm and the inner face of the second arm.

[0118] Embodiment 20. The oral care device of any one or more of embodiments 17 to 19 wherein the first lateral dimension of the embrasure contacting interface is approximately one-third of a lateral dimension of the floss filament spanning from the inner face of the first arm to the inner face of the second ami.

[0119] Embodiment 21. The oral care device of any one or more of embodiments 17 to 20, wherein the embrasure contacting interface further comprises: a second projection of the substrate core, the second projection extending from the flat base across the outer face through the respective arm and comprising an opposite base spanning across an area on the inner face of the respective ami that is located between the lateral axis and the tip of the respective arm.

[0120] Embodiment 22. The oral care device of embodiment 21, wherein the opposite base of the second projection of the substrate core has a triangular profile that extends into a concavity of the concave quadrilateral geometry of a cross-section defined by the overmold.

[0121] Embodiment 23. The oral care device of any one or more of embodiments 17 to 22, wherein the plurality of embrasure contacting protmsions are located are uniformly spaced in a lateral direction.

[0122] Embodiment 24. The oral care device of any one or more of embodiments 17 to 23, wherein a lateral spacing among the plurality of embrasure contacting protmsions is greater than a thickness of the plurality of embrasure contacting protmsions.

[0123] Embodiment 25. The oral care device of any one or more of embodiments 17 to 24, wherein the first projection of the substrate core is tapered in cross-sectional size away from the inner face.

[0124] Embodiment 26. The oral care device of any one or more of embodiments 17 to 25, wherein the first projection of the substrate core is conical or cylindrical.

[0125] Embodiment 27. The oral care device of any one or more of embodiments 17 to 26, wherein the plurality of embrasure contacting protmsions are formed of flexible robber suchthat the plurality of embrasure contacting protrusions are configured to be used as bristles for the embrasure contacting interface.

[0126] Embodiment 28. The oral care device of any one or more of embodiments 17 to 27, wherein the plurality of embrasure contacting protrusions includes at least six embrasure contacting protrusions.

[0127] Embodiment 29. The oral care device of any one or more of embodiments 17 to 28, wherein the overmold defines a rounded tip for the embrasure contacting interface at the first lateral distance away from the inner face of the respective arm.

[0128] Embodiment 30. The oral care device of any one or more of embodiments 17 to 29, wherein the outer face of each of the first arm and the second arm is encased in a rubber layer that is less than or equal to a height of the flat base of the substrate core of the embrasure contacting interface, such that the flat base of the substrate core of the embrasure contacting interface remains exposed.

[0129] Embodiment 31. The oral care device of any one or more of embodiments 17 to 30, wherein the headpiece further comprises: a scraper surface disposed on the headpiece body on a portion thereof opposite from the first arm and the second arm, the scraper surface comprising one or more ridges for scraping a surface.

[0130] Embodiment 32. The oral care device of embodiment 31, wherein the one or more ridges includes at least one ridge having a cross-sectional shape of a single -bevel blade.

[0131] Embodiment 33. The oral care device of embodiment 32, wherein the one or more ridges includes a first ridge having a cross-sectional shape of a blade with a single upwards-facing bevel and one or more second ridges having a cross-sectional shape of a blade with a single downwards-facing bevel.

[0132] Embodiment 34. The oral care device of embodiment 31, wherein the one or more ridges includes a first ridge that includes a blade spanning across a width of the scraper surface and a second ridge that includes a plurality of individual bristles arranged across the width of the scraper surface.

[0133] Embodiment 35. An assembly for retaining positioning of a floss filament during manufacturing of headpieces for flosser devices, the assembly comprising: a headpiece body and two arms extending in parallel away from the headpiece body in a same direction, each of the two arms comprising an inner face and an outer face; and for each of the two arms, a core structure comprising: a member aligned with a common axis that extends from the inner face of a respective arm along a lateral direction that extends perpendicular to the two arms, the member configured to provide a sleeve for a floss filament spanning between the two armsalong the common axis, and a first base pressed against a first contact area across the outer face of the respective arm and connected to the member through the respective arm, the first base configured to counteract movements of the member laterally away from the common axis based on an interface between the first base and the first contact area across the outer face.

[0134] Embodiment 36. The assembly of embodiment 35, wherein the core structure further comprises: a second base interfacing with a second contact area across the inner face of the respective arm, the second contact area being separate from the member.

[0135] Embodiment 37. The assembly of embodiment 36, wherein the second base has a triangular geometry that extends into a concavity of an embrasure-shaped profile defined around the common axis.

[0136] Embodiment 38. The assembly of any one or more of embodiments 35 to 37, wherein a lateral dimension for which the member is configured to provide the sleeve is approximately one -third of a lateral dimension of the floss filament.

[0137] Embodiment 39. The assembly of any one or more of embodiments 35 to 37, further comprising: a tongue scraper disposed on the headpiece body opposite from the two arms, the tongue scraper comprises one or more ridges configured for scraping a surface.

[0138] Embodiment 40. A method of improving dental hygiene implemented by the oral care device of any of embodiments 17-34, or the attachable headpiece of any of embodiments 1-16.

[0139] Embodiment 41. A method of improving mechanical stability of an attachable headpiece implemented by the assembly of any of embodiments 35-39.

[0140] Embodiment 42. A method of cleaning dental embrasures during flossing implemented by the oral care device of any of embodiments 17-34, or the attachable headpiece of any of embodiments 1-16.

[0141] Embodiment 43. A headpiece of an oral care device comprising: a first arm and a second arm disposed on opposite ends of a headpiece body and extending parallel to one another along a height direction from the headpiece body, each of the first arm and the second arm including an inner face and an outer face; a floss filament extending between the inner face of the first arm and the inner face of the second arm along a lateral axis perpendicular to the height direction, and directly attached to each of the first arm and the second arm, an embrasure contacting interface extending medially from the inner face of a respective arm, wherein the embrasure contacting interface comprises: a substrate core that extends from the outer face to the inner face of the respective arm and medially from the inner face of the respective arm and terminating at a first distance past the inner face of the respective arm, the substrate corecomprising a first material with a first rigidity; an embrasure conforming body disposed over the substrate core, the embrasure conforming body extending medially from the inner face of the respective arm and terminating at the first distance or a second distance past the inner face of the respective arm, the embrasure conforming body comprising a second material with a second rigidity less than the first rigidity; and a plurality of embrasure contacting protrusions, each of the embrasure contacting protrusions surrounding the embrasure conforming body and having respective contours that substantially match cross sections of the embrasure conforming body at corresponding lateral positions of the embrasure conforming body, the embrasure contacting protrusions being offset laterally with respect to one another.

[0142] Embodiment 44. The headpiece of embodiment 43, wherein the first material with the first rigidity comprises a plastic, and the second material with the second rigidity comprises a rubber, and wherein the plurality of embrasure contacting protrusions comprises the second material.

[0143] Embodiment 45. The headpiece of any one or more of embodiments 43 to 44, wherein the embrasure conforming body tapers as the embrasure conforming body extends medially from the inner face of the respective arm, the tapering of the embrasure conforming body comprising decreasing cross-sectional dimensions as the embrasure conforming body extends from the inner face, the cross-sectional dimensions being defined within the cross sections, the cross sections being oriented along normal planes, the normal planes being substantially perpendicular to the lateral axis.

[0144] Embodiment 46. The headpiece of any one or more of embodiments 43 to 45, wherein a contour of each of the plurality of embrasure contacting protrusions is confined within a normal plane.

[0145] Embodiment 47. The headpiece of any one or more of embodiments 43 to 46, wherein the embrasure contacting protrusions are offset substantially equidistant with one another with respect to a lateral direction.

[0146] Embodiment 48. The headpiece of any one or more of embodiments 43 to 47, wherein the contours of the embrasure contacting protrusions comprise a concave quadrilateral geometry or a triangular geometry.

[0147] Embodiment 49. The headpiece of any one or more of embodiments 43 to 48, wherein the embrasure conforming body comprises a profile of a pyramid or a truncated pyramid.

[0148] Embodiment 50. The headpiece of any one or more of embodiments 43 to 49, wherein the substrate core comprises a different profile compared to the profile of the embrasure conforming body.

[0149] Embodiment 51. The headpiece of any one or more of embodiments 43 to 50, wherein the substrate core comprises a substantially conical or cylindrical profile.

[0150] Embodiment 52. The headpiece of any one or more of embodiments 43 to 51, wherein the embrasure contacting interface is disposed at an upper portion of the headpiece, and the headpiece further comprises a scraper disposed at a bottom surface of the headpiece, wherein the scraper comprises one or more serrations configured to scrape a tongue surface.

[0151] Embodiment 53. The headpiece of embodiment 52, wherein the one or more serrations include at least one ridge having a cross-sectional shape of a single-bevel blade.

[0152] Embodiment 54. The headpiece of embodiment 53, wherein the one or more serrations includes a first serration having a cross-sectional shape of a blade with a single upwards-facing bevel and one or more second serrations having a cross-sectional shape of a blade with a single downwards-facing bevel.

[0153] Embodiment 55. The headpiece of embodiment 52, wherein the one or more serrations include a first serration that includes a blade spanning across a width of the scraper and a second serration that includes a plurality of individual bristles arranged across the width of the scraper.

[0154] Embodiment 56. The headpiece of any one or more of embodiments 43 to 55, wherein the embrasure contacting interface further comprises a transitioning body that directly contacts the embrasure conforming body when the embrasure conforming body terminates at the first distance or the second distance, the transitioning body being aligned with the floss filament with respect to a height, wherein the embrasure conforming body, the transitioning body, and the floss filament are substantially collinear.

[0155] Embodiment 57. The headpiece of any one or more of embodiments 43 to 56, wherein the transitioning body comprises a rounded tip at a first end farther from the inner face of the respective arm and comprises a pyramidal face at a second end that directly contacts the embrasure conforming body, wherein the rounded tip is configured as a leading edge to facilitate sliding of the embrasure conforming body along an embrasure.

[0156] Embodiment 58. The headpiece of any one or more of embodiments 43 to 57, wherein the floss filament comprises an exposed portion between the two rounded tips of the two transitioning bodies and an unexposed portion between each respective inner face and the respective rounded tips.

[0157] Embodiment 59. The headpiece of any one or more of embodiments 43 to 58, wherein the substrate core comprises a flat base across the outer face of the respective arm and a first projection that extends from the flat base through the respective arm along the medial axis and terminating at the first distance past the inner face.

[0158] Embodiment 60. The headpiece of embodiment 59, wherein the outer face of each of the first ami and the second arm is encased in a rubber layer that is less than or equal to a height of the flat base of the core of the embrasure contacting interface, such that the flat base of the substrate core remains exposed.

[0159] Embodiment 61. The headpiece of any one or more of embodiments 59 to 60 wherein the embrasure conforming body corresponds to an overmold disposed around the first projection.

[0160] Embodiment 62. The headpiece of any one or more of embodiments 59 to 61, wherein the medial axis is located inset from a tip of the first arm and a tip of the second arm; and the embrasure conforming body further comprises: second projection of the substrate core, the second projection extending from the flat base across the outer face through the respective arm and comprising an opposite base spanning across an area on the inner face of the respective arm that is located between the medial axis and the tip of the respective arm.

[0161] Embodiment 63. The headpiece of embodiment 62, wherein the opposite base of the second projection of the core has a triangular profile that extends into a concavity of a concave quadrilateral geometry of a cross-section of the embrasure conforming body.

[0162] Embodiment 64. The headpiece of any one or more of embodiments 43 to 63, wherein the plurality of embrasure contacting protrusions have a uniform lateral spacing between one another.

[0163] Embodiment 65. The headpiece of embodiment 64, wherein the uniform lateral spacing is greater than a thickness of the plurality of embrasure contacting protrusions.

[0164] Embodiment 66. The headpiece of any one or more of embodiments 43 to 65, wherein the first distance is approximately one -third of a distance of the floss filament spanning from the inner face of the first arm to the inner face of the second arm.

[0165] Embodiment 67. A foundational component of an oral care device, comprising: a first arm and a second arm disposed on opposite ends of a headpiece body and extending parallel to one another along a height direction from the headpiece body, each of the first arm and the second arm including an inner face and an outer face; a floss filament extending between the inner face of the first arm and the inner face of the second arm along a lateral axis perpendicular to the height direction, and directly attached to each of the first arm and thesecond am: a substrate core that extends from the outer face to the inner face of the respective arm and medially from the inner face of the respective arm and terminating at a first distance past the inner face of the respective arm; and one or more stabilizing cores attached to the outer face or the inner face, the one or more stabilizing cores configured to prevent flexion of the respective arm during a molding process to mold an embrasure conforming body onto the substrate core.

[0166] Embodiment 68. The foundational component of embodiment 67, wherein the one or more stabilizing cores comprises an outer stabilizing core attached to the outer face and an inner stabilizing core attached to the inner face, wherein the substrate cores, the first am, the second am, and the stabilizing cores form a unitary structure.

[0167] Embodiment 69. The foundational component of embodiment 68, wherein the outer stabilizing core comprises cross sections having a substantially concave quadrilateral or triangular profile, wherein the cross sections are defined along normal planes perpendicular to the lateral axis.

[0168] Embodiment 70. The foundational component of any one or more of embodiments 67 to 68, wherein the inner stabilizing core comprises a triangular structure that extends medially from the respective am, the inner stabilizing core being configured to absorb inward or outward flexing flexion applied to the substrate core.

[0169] Embodiment 71. The foundational component of any one or more of embodiments 67 to 70, wherein the substrate cores, the first arm, the second arm, and the stabilizing cores comprise a rigid plastic.

[0170] Embodiment 72. The foundational component of any one or more of embodiments 67 to 71, further comprising one or more embrasure cleaning features disposed over the substrate core, the one or more embrasure cleaning features extending medially from the inner face of the respective arm and teminating at the first distance or a second distance past the inner face of the respective am, the one or more embrasure cleaning features comprising a second material with a second rigidity less than a first rigidity.

[0171] Embodiment 73. The foundational component of any one or more of embodiments 67 to 72, wherein the embrasure cleaning features comprise a bracket brush, a toothface scrub, or a prosthetic sweep.

[0172] Embodiment 74. The foundational component of any one or more of embodiments 67 to 73, wherein the substrate core comprises a substantially cylindrical or conical profile.

[0173] Embodiment 75. An oral care device comprising: a handle comprising a gripping portion and a neckpiece; and a headpiece removably coupled to the neckpiece, the headpiececomprising: a first arm and a second arm disposed on opposite ends of a headpiece body and extending parallel to one another along a height direction from the headpiece body, each of the first arm and the second arm including an inner face and an outer face; a floss filament extending between the inner face of the first arm and the inner face of the second arm along a medial axis perpendicular to the height direction, and directly attached to each of the first arm and the second arm, an embrasure contacting interface extending medially from the inner face of a respective arm, wherein the embrasure contacting interface comprises: a substrate core that extends from the outer face to the inner face of the respective arm and medially from the inner face of the respective arm and terminating at a first distance past the inner face of the respective arm, the substrate core comprising a first material with a first rigidity; an embrasure conforming body disposed over the substrate core, the embrasure conforming body extending medially from the inner face of the respective arm and terminating at the first distance or a second distance past the inner face of the respective arm, the embrasure conforming body comprising a second material with a second rigidity less than the first rigidity; and a plurality of embrasure contacting protrusions, each of the embrasure contacting protrusions surrounding the embrasure conforming body and having respective contours that substantially match cross sections of the embrasure conforming body at corresponding lateral positions of the embrasure conforming body, the embrasure contacting protrusions being offset laterally with respect to one another.

[0174] Embodiment 76. The oral care device of embodiment 75, wherein the headpiece comprises protruding mating features that are complementary with embedded recessed features within an interlock of the neckpiece, the protruding mating features comprising a first mating feature, a second mating feature, and a third mating feature, the first mating feature having an opposite orientation compared to the third mating feature, and the first mating feature and the third mating feature being substantially equidistant with respect to a lateral direction from a center axis of the second mating feature, the center axis extending along a height direction or a length direction.

[0175] Embodiment 77. The oral care device of embodiment 76, wherein the neckpiece comprises the interlock, the interlock comprising a recessed groove and embedded recessed features positioned within the recessed groove, the embedded recessed features comprising a first embedded recessed feature, a second embedded recessed feature, and a third embedded recessed feature, the third embedded recessed feature having an opposite orientation relative to an orientation of the first embedded recessed feature, and the first embedded recess and thethird embedded recess are substantially equidistant with respect to a lateral direction from a center axis of the second embedded recessed feature.

[0176] Embodiment 78. The oral care device of embodiment 77, wherein the first embedded recessed feature is complementary to the first mating feature or the third mating feature, the second embedded recessed feature is complementary to the second mating feature, and the third embedded recessed feature is complementary to the third mating feature or the first mating feature.

[0177] Embodiment 79. The oral care device of any one or more of embodiments 75 to 78, wherein the handle comprises a constant cross-section portion corresponding to a gripping end and the neckpiece has a variable cross-section portion, wherein the substantially constant crosssection portion comprises constant cross-section surfaces along a length of the constant crosssection portion, the variable cross-section portion being directly adjacent to the constant crosssection portion, the variable cross-section portion having variable cross-section surfaces along a length of the variable cross-section portion, wherein the constant cross-section surfaces have a fixed width and a fixed height, and at least a portion of the variable cross-section surfaces having different widths or different heights.

[0178] Embodiment 80. The oral care device of any one or more of embodiments 75 to 79, wherein the first material with the first rigidity comprises a plastic, and the second material with the second rigidity comprises a rubber, and wherein the plurality of embrasure contacting protrusions comprises the second material.

[0179] Embodiment 81. The oral care device of any one or more of embodiments 75 to 80, wherein the embrasure conforming body tapers as the embrasure conforming body extends medially from the inner face of the respective arm, the tapering of the embrasure conforming body comprising decreasing cross-sectional dimensions as the embrasure conforming body extends from the inner face, the cross-sectional dimensions being defined within the cross sections, the cross sections being oriented along normal planes, the normal planes being substantially perpendicular to the lateral axis.

[0180] Embodiment 82. The oral care device of any one or more of embodiments 75 to 81, wherein a contour of each of the plurality of embrasure contacting protrusions is confined within a normal plane.

[0181] Embodiment 83. The oral care device of any one or more of embodiments 75 to 82, wherein the embrasure contacting protrusions are offset substantially equidistant with one another with respect to the lateral direction.

[0182] Embodiment 84. The oral care device of any one or more of embodiments 75 to 83, wherein the contours of the embrasure contacting protrusions comprise a concave quadrilateral geometry or a triangular geometry.

[0183] Embodiment 85. The oral care device of any one or more of embodiments 75 to 84, wherein the embrasure conforming body comprises a profile of a pyramid or a truncated pyramid.

[0184] Embodiment 86. The oral care device of any one or more of embodiments 75 to 85, wherein the substrate core comprises a different profile compared to the profile of the embrasure conforming body.

[0185] Embodiment 87. The oral care device of any one or more of embodiments 75 to 86, wherein the substrate core comprises a substantially conical or cylindrical profile.

[0186] Embodiment 88. The oral care device of any one or more of embodiments 75 to 87, wherein the embrasure contacting interface is disposed at an upper portion of the headpiece, and the headpiece further comprises a scraper disposed at a bottom surface of the headpiece, wherein the scraper comprises one or more serrations configured to scrape a tongue surface.

[0187] Embodiment 89. The oral care device of embodiment 88, wherein the one or more serrations include at least one ridge having a cross-sectional shape of a single-bevel blade.

[0188] Embodiment 90. The oral care device of embodiment 89, wherein the one or more serrations includes a first serration having a cross-sectional shape of a blade with a single upwards-facing bevel and one or more second serrations having a cross-sectional shape of a blade with a single downwards-facing bevel.

[0189] Embodiment 91. The oral care device of embodiment 88, wherein the one or more serrations include a first serration that includes a blade spanning across a width of the scraper and a second serration that includes a plurality of individual bristles arranged across the width of the scraper.

[0190] Embodiment 92. The oral care device of any one or more of embodiments 75-91, wherein the embrasure contacting interface further comprises a transitioning body that directly contacts the embrasure conforming body when the embrasure conforming body terminates at the first distance or the second distance, the transitioning body being aligned with the floss filament with respect to a height, wherein the embrasure conforming body, the transitioning body, and the floss filament are substantially collinear.

[0191] Embodiment 93. The oral care device of any one or more of embodiments 75-92, wherein the transitioning body comprises a rounded tip at a first end farther from the inner face of the respective arm and comprises a pyramidal face at a second end that directly contacts theembrasure conforming body, wherein the rounded tip is configured as a leading edge to facilitate sliding of the embrasure conforming body along an embrasure.

[0192] Embodiment 94. The oral care device of any one or more of embodiments 75-93, wherein the floss filament comprises an exposed portion between the two rounded tips of the two transitioning bodies and an unexposed portion between each respective inner face and the respective rounded tips.

[0193] Embodiment 95. The oral care device of any one or more of embodiments 75-94, wherein the substrate core comprises a flat base across the outer face of the respective arm and a first projection that extends from the flat base through the respective arm along the medial axis and terminating at the first distance past the inner face.

[0194] Embodiment 96. The oral care device of any one or more of embodiments 75-95, wherein the outer face of each of the first arm and the second arm is encased in a rubber layer that is less than or equal to a height of the flat base of the substrate core of the embrasure contacting interface, such that the flat base of the substrate core remains exposed.

[0195] Embodiment 97. The oral care device of any one or more of embodiments 95 or 96, wherein the embrasure conforming body corresponds to an overmold disposed around the first projection.

[0196] Embodiment 98. The oral care device of any one or more of embodiments 95-97, wherein the medial axis is located inset from a tip of the first arm and a tip of the second arm; and the embrasure conforming body further comprises: a second projection of the substrate core, the second projection extending from the flat base across the outer face through the respective arm and comprising an opposite base spanning across an area on the inner face of the respective arm that is located between the medial axis and the tip of the respective arm.

[0197] Embodiment 99. The oral care device of embodiment 98, wherein the opposite base of the second projection of the core has a triangular profile that extends into a concavity of a concave quadrilateral geometry of a cross-section of the embrasure conforming body.

[0198] Embodiment 100. The oral care device of any one or more of embodiments 75-99, wherein the plurality of embrasure contacting protrusions have a uniform lateral spacing between one another.

[0199] Embodiment 101. The oral care device of embodiment 100, wherein the uniform lateral spacing is greater than a thickness of the plurality of embrasure contacting protrusions.

[0200] Embodiment 102. The oral care device of any one or more of embodiments 75-101, wherein the first distance is approximately one-third of a lateral dimension of the floss filament spanning from the inner face of the first arm to the inner face of the second arm.

[0201] Embodiment 103. An oral care device kit comprising: the oral care device of any one or more of embodiments 75-102; and an oral care device cover configured to house the oral care device, wherein the oral care device cover comprises: an open bottom surface; a left side surface; a front surface; a right side surface; a back surface; and a closed top surface, wherein the oral care device cover comprises one or more chamfered edges along the closed top surface and the front surface and the back surface comprise arched surfaces.

[0202] Embodiment 104. The oral care device kit of embodiment 103, wherein the oral care device cover contains one or more cleaning chemicals configured to sanitize the oral care device when the oral care device is housed within the oral care device cover.III. Conclusion

[0203] The above detailed descriptions of embodiments of the present technology are not intended to be exhaustive or to limit the technology to the precise form disclosed above. Although specific embodiments of, and examples for, the technology are described above for illustrative purposes, various equivalent modifications arc possible within the scope of the technology as those skilled in the relevant art will recognize. For example, although steps are presented in a given order above, alternative embodiments may perform steps in a different order. Reference throughout this specification to “one embodiment” or “an embodiment” means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present technology. Thus, the appearances of the phrases “in one embodiment,” “in an embodiment” or “in some embodiments” in various places throughout this specification are not necessarily all referring to the same embodiment, but may be in some instances. The particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Furthermore, the various embodiments described herein may also be combined to provide further embodiments.

[0204] From the foregoing, it will be appreciated that specific embodiments of the present technology have been described herein for purposes of illustration, but well-known structures and functions have not been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments of the present technology. Where the context permits, singular or plural terms may also include the plural or singular term, respectively. Moreover, unless the word “or” is expressly limited to mean only a single item exclusive from the other items in reference to a list of two or more items, then the use of “or” in such a list is to be inteipreted in an inclusive sense as including (a) any single item in the list, (b) all of the items in the list, or (c) any combination of the items in the list. Furthermore, as used herein, the phrase “and / or”as in “A and / or B” refers to A alone, B alone, and both A and B. Additionally, the terms “comprising,” “including,” “having,” and “with” are used throughout to mean including at least the recited feature(s) such that any greater number of the same features and / or additional types of other features are not precluded. Moreover, as used herein, the phrases “based on,” “depends on,” “as a result of,” and “in response to” shall not be construed as a reference to a closed set of conditions. For example, an exemplary step that is described as “based on condition A” may be based on both condition A and condition B without departing from the scope of the present technology. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on” or the phrase “based at least partially on.”

[0205] Spatially relative terms, such as “beneath,” “below,” “over,” “under,” “above,” “upper,” “top,” “bottom,” “left,” “right,” “center,” “middle,” “forward,” “away,” and the like, are used herein for ease of description to describe one element or feature’s relationship relative to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms arc intended to encompass different orientations of the device or system in use or operation in addition to the orientation depicted in the figures. For example, if a device or system in the figures is rotated or turned over, elements described as “below” or “beneath” or “under” other elements or features would then be oriented “above” the other elements or features. Thus, the exemplary terms “below” and “under” may encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90° or at other orientations) and the spatially relative descriptors used herein are interpreted accordingly. In addition, it will also be understood that when an element is referred to as being “between” two other elements, it may be the only element between the two other elements, or one or more intervening elements may also be present.

[0206] From the foregoing, it will also be appreciated that various modifications may be made without deviating from the present technology. For example, one of ordinary skill in the art will understand that various components of the present technology may be further divided into subcomponents, or that various components and functions of the present technology may be combined and integrated. In addition, certain aspects of the technology described in the context of particular embodiments may also be combined or eliminated in other embodiments. Furthermore, although advantages associated with certain embodiments of the present technology have been described in the context of those embodiments, other embodiments may also exhibit such advantages, and not all embodiments need necessarily exhibit such advantages to fall within the scope of the present technology. Accordingly, the present technology may encompass other embodiments not expressly shown or described herein.

[0207] Recitation of numeric ranges of values throughout the specification is intended to serve as a shorthand notation of referring individually to each separate value falling within the range inclusive of the values defining the range, and each separate value is incorporated in the specification as it were individually recited herein. For example, if a range is 5 to 10 percent, the range includes any separate value within that specified range, including but not limited to 5 percent, 6 percent, 7 percent, 8 percent, 9 percent, or 10 percent. Additionally, the singular forms “a,” “an” and “the” include plural referents unless the context clearly dictates otherwise. The phrases “at least one of,” “at least one selected from the group of,” or “at least one selected from the group consisting of,” and the like are to be interpreted in the disjunctive (e.g., not to be interpreted as at least one of A and at least one of B).

[0208]

[0209] A component being implemented as another component may be construed as the component being operated in a same or similar manner as the another component, and / or comprising same or similar features, characteristics, parameters, or results as the another component. Reference to alternative terms (e.g., “embrasure contacting interface” or “embrasure brush”) may mean that each of the alternative terms may be used interchangeably in at least some contexts.

[0210] Reference to a feature A “and” a feature B may be constmed to also encompass the possibility of A “or” B. Any reference to “approximate,” “substantial,” “close,” “near,” a “threshold” or “sufficiency” may be constmed to encompass any applicable value or degree, such as any applicable value or degree sufficient to satisfy a given outcome. Substantially or approximately may be constmed to include any values within a permitted tolerance range such as + / - 0.1 percent difference, + / - 1 percent difference, + / - 2 percent difference, + / - 5 percent difference, + / - 10 percent difference, + / - 20 percent difference, + / - 25 percent difference, or any other value therebetween, or any ranges therebetween. Additionally or alternatively, substantially or approximately may be constmed as qualitatively satisfying some condition, such as satisfying a degree of rigidity or sufficiently secure attachment. Reference to “likely,” “a likelihood,” or “probable” or any variation thereof may be constmed as satisfying some threshold likelihood or probability. In some embodiments, a reference to two entities differing may refer to the two entities having at least a threshold range or level of difference, such as + / -5 percent, + / -10 percent, + / -20 percent, + / -25 percent, + / -50 percent, or any other value therebetween, or any ranges therebetween. Additionally or alternatively, a difference may be constmed as qualitatively satisfying some condition or standard.

Claims

1. CLAIMS2.What is claimed is:

1. An attachable headpiece for a flosser device, comprising:4.a headpiece body;5.a first arm and a second arm disposed on opposite ends of the headpiece body and extending away from the headpiece body, the first arm and the second arm extending in parallel in a same direction, each of the first arm and the second arm having an inner face and an outer face;6.a floss filament extending between the inner face of first arm and the inner face of second arm; and7.two embrasure contacting interfaces each extending from the inner face of one of the first arm or the second arm along the floss filament up to a first position, each embrasure contacting interface configured to support the floss filament configured to be pushed into a dental embrasure in response to a lateral movement of the attachable headpiece while the floss filament is disposed within the dental embrasure between two adjacent teeth, wherein each embrasure contacting interface comprises:8.a substrate core within each embrasure contacting interface and spanning through a respective ami to the outer face of the respective arm,9.an overmold disposed around the substrate core and defining cross-sections of each embrasure contacting interface, the cross-sections having a geometry comesponding to a profile of the dental embrasure and being tapered in size away from the respective arm, and10.a plurality of embrasure contacting protrusions around the overmold and located at different lateral positions along each embrasure contacting interface, each embrasure contacting protrusion proportionally enlarging a cross-section defined by the overmold at a corresponding lateral position.

2. The attachable headpiece of claim 1, wherein the substrate core is comprised of a rigid plastic, and the overmold and the plurality of embrasure contacting protrusions are comprised of a flexible rubber.

3. The attachable headpiece of any one or more of claims 1 to 2, wherein a sum of a lateral dimension of each of the two embrasure contacting interfaces is less than a total lateral dimension of the headpiece body between the inner face of the first ami and the inner face of the second arm.

4. The attachable headpiece of any one or more of claims 1 to 3, wherein the lateral dimension of each of the two embrasure contacting interfaces is approximately one-third of a lateral dimension of the floss filament spanning from the inner face of the first arm to the inner face of the second arm.

5. The attachable headpiece of any one or more of claims 1 to 4, wherein the substrate core within each of the two embrasure contacting interfaces is connected to a first flat base across an area on the outer face of the respective arm and a second flat base across an area on the inner face of the respective arm that is separate from each embrasure contacting interface.

6. The attachable headpiece of claim 5, wherein the second flat base comprises a triangular geometry that extends into a concave edge of the cross-sections of each embrasure contacting interface at the inner face of the respective ann.

7. The attachable headpiece of claim 5, wherein the first flat base is exposed through an overmold layer encasing the respective arm.

8. The attachable headpiece of any one or more of claims 1 to 7, wherein the plurality of embrasure contacting protrusions are uniformly spaced along a lateral direction.

9. The attachable headpiece of any one or more of claims 1 to 8, wherein a lateral spacing among the embrasure contacting protrusions is greater than a thickness of the plurality of embrasure contacting protrusions.

10. The attachable headpiece of any one or more of claims 1 to 9, wherein the substrate core within each embrasure contacting interface is conical or cylindrical.

11. The attachable headpiece of any one or more of claims 1 to 10, wherein the plurality of embrasure contacting protrusions are formed of flexible rubber such that the plurality of embrasure contacting protrusions are configured to be used as bristles for each embrasure contacting interface.

12. The attachable headpiece of any one or more of claims 1 to 11 , wherein the plurality of embrasure contacting protrusions includes at least six embrasure contacting protrusions.

13. The attachable headpiece of any one or more of claims 1 to 12, wherein the overmold includes a rounded tip for each embrasure contacting interface.

14. The attachable headpiece of any one or more of claims 1 to 13, further comprising:22.a scraper surface disposed on the headpiece body opposite from the first arm and the second arm, the scraper surface comprising one or more ridges for scraping a surface.

15. The attachable headpiece of claim 14, wherein the one or more ridges each have a single-bevel blade cross-section.

16. The attachable headpiece of claim 14, wherein the one or more ridges includes a blade row and a bristle row.

17. An oral care device comprising:26.a handle comprising a gripping portion and a neckpiece; and27.a headpiece removably coupled to the neckpiece, the headpiece comprising:28.a first arm and a second arm disposed on opposite ends of a headpiece body and extending parallel to one another from the headpiece body in a same direction, each of the first arm and the second arm including an inner face and an outer face;29.a floss filament extending between the inner face of the first arm and the inner face of the second arm along a lateral axis perpendicular to the first arm and the second arm, the lateral axis being located inset from a tip of the first arm and a tip of the second arm; and30.extending from each of the first arm and the second arm, an embrasure contacting interface extending medially from the inner face of a respective arm and having cross-sections centered about the lateral axis and tapered in size away from the inner face, wherein the cross-section has a concave quadrilateral geometry corresponding to a profile of a dental embrasure, and wherein the embrasure contacting interface comprises:31.a substrate core comprising a flat base across the outer face of the respective arm and a first projection that extends from the flat base through the respective arm along the lateral axis up to a first lateral distance past the inner face of the respective arm, the substrate core being of a first material with a first rigidity; an overmold disposed around the first projection of the substrate core and defining the cross-section of the embrasure contacting interface, the ovcrmold being of a second material with a second rigidity less than the first rigidity; and a plurality of embrasure contacting protrusions each surrounding the overmold and located at different lateral positions and scaling up the cross-section of the embrasure contacting interface at each corresponding lateral position.

18. The oral care device of claim 17, wherein the first material with the first rigidity is a plastic, and the second material with the second rigidity is a rubber, and wherein the plurality of embrasure contacting protrusions is comprised of the second material.

19. The oral care device of any one or more of claims 17 to 18 wherein a sum of a first lateral dimension of the embrasure contacting interface on the first arm and a second lateral dimension of the embrasure contacting interface on the second arm is less than a total lateral dimension of the headpiece body between the inner face of the first arm and the inner face of the second arm.

20. The oral care device of any one or more of claims 17 to 19 wherein the first lateral dimension of the embrasure contacting interface is approximately one- third of a lateral dimension of the floss filament spanning from the inner face of the first arm to the inner face of the second arm.

21. The oral care device of any one or more of claims 17 to 20, wherein the embrasure contacting interface further comprises:35.a second projection of the substrate core, the second projection extending from the flat base across the outer face through the respective arm and comprising an opposite base spanning across an area on the inner face of the respective arm that is located between the lateral axis and the tip of the respective arm.

22. The oral care device of claim 21, wherein the opposite base of the second projection of the substrate core has a triangular profile that extends into a concavity of the concave quadrilateral geometry of a cross-section defined by the overmold.

23. The oral care device of any one or more of claims 17 to 22, wherein the plurality of embrasure contacting protrusions are located are uniformly spaced in a lateral direction.

24. The oral care device of any one or more of claims 17 to 23, wherein a lateral spacing among the plurality of embrasure contacting protrusions is greater than a thickness of the plurality of embrasure contacting protrusions.

25. The oral care device of any one or more of claims 17 to 24, wherein the first projection of the substrate core is tapered in cross-sectional size away from the inner face.

26. The oral care device of any one or more of claims 17 to 25, wherein the first projection of the substrate core is conical or cylindrical.

27. The oral care device of any one or more of claims 17 to 26, wherein the plurality of embrasure contacting protmsions are formed of flexible rubber such that the plurality of embrasure contacting protrusions are configured to be used as bristles for the embrasure contacting interface.

28. The oral care device of any one or more of claims 17 to 27, wherein the plurality of embrasure contacting protrusions includes at least six embrasure contacting protrusions.

29. The oral care device of any one or more of claims 17 to 28, wherein the overmold defines a rounded tip for the embrasure contacting interface at the first lateral distance away from the inner face of the respective arm.

30. The oral care device of any one or more of claims 17 to 29, wherein the outer face of each of the first arm and the second arm is encased in a rubber layer that is less than or equal to a height of the flat base of the substrate core of the embrasure contacting interface, such that the flat base of the substrate core of the embrasure contacting interface remains exposed.

31. The oral care device of any one or more of claims 17 to 30, wherein the headpiece further comprises:45.a scraper surface disposed on the headpiece body on a portion thereof opposite from the first arm and the second arm, the scraper surface comprising one or more ridges for scraping a surface.

32. The oral care device of claim 31, wherein the one or more ridges includes at least one ridge having a cross-sectional shape of a single -bevel blade.

33. The oral care device of claim 32, wherein the one or more ridges includes a first ridge having a cross-sectional shape of a blade with a single upwards- facing bevel and one or more second ridges having a cross-sectional shape of a blade with a single downwards-facing bevel.

34. The oral care device of claim 31, wherein the one or more ridges includes a first ridge that includes a blade spanning across a width of the scraper surface and a second ridge that includes a plurality of individual bristles arranged across the width of the scraper surface.

35. An assembly for retaining positioning of a floss filament during manufacturing of headpieces for flosser devices, the assembly comprising:49.a headpiece body and two arms extending in parallel away from the headpiece body in a same direction, each of the two arms comprising an inner face and an outer face; and50.for each of the two arms, a core structure comprising:51.a member aligned with a common axis that extends from the inner face of a respective arm along a lateral direction that extends perpendicular to the two arms, the member configured to provide a sleeve for a floss filament spanning between the two anus along the common axis, and52.a first base pressed against a first contact area across the outer face of the respective arm and connected to the member through the respective arm, the first base configured to counteract movements of the member laterally away from the common axis based on an interface between the first base and the first contact area across the outer face.

36. The assembly of claim 35, wherein the core structure further comprises: a second base interfacing with a second contact area across the inner face of the respective arm, the second contact area being separate from the member.

37. The assembly of claim 36, wherein the second base has a triangular geometry that extends into a concavity of an embrasure-shaped profile defined around the common axis.

38. The assembly of any one or more of claims 35 to 37, wherein a lateral dimension for which the member is configured to provide the sleeve is approximately one-third of a lateral dimension of the floss filament.

39. The assembly of any one or more of claims 35 to 37, further comprising: a tongue scraper disposed on the headpiece body opposite from the two arms, the tongue scraper comprises one or more ridges configured for scraping a surface.

40. A method of improving dental hygiene implemented by the oral care device of any of claims 17-34, or the attachable headpiece of any of claims 1-16.

41. A method of improving mechanical stability of an attachable headpiece implemented by the assembly of any of claims 35-39.

42. A method of cleaning dental embrasures during flossing implemented by the oral care device of any of claims 17-34, or the attachable headpiece of any of claims 1-16.

43. A headpiece of an oral care device comprising:60.a first arm and a second arm disposed on opposite ends of a headpiece body and extending parallel to one another along a height direction from the headpiece body, each of the first arm and the second arm including an inner face and an outer face;61.a floss filament extending between the inner face of the first arm and the inner face of the second arm along a lateral axis perpendicular to the height direction, and directly attached to each of the first arm and the second arm, an embrasure contacting interface extending medially from the inner face of a respective arm, wherein the embrasure contacting interface comprises:62.a substrate core that extends from the outer face to the inner face of the respective arm and medially from the inner face of the respective arm and terminating at a first distance past the inner face of the respective arm, the substrate core comprising a first material with a first rigidity; an embrasure conforming body disposed over the substrate core, the embrasure conforming body extending medially from the inner face of the respective arm and terminating at the first distance or a second distance past the inner face of the respective arm, the embrasure conforming body comprising a second material with a second rigidity less than the first rigidity; and63.a plurality of embrasure contacting protrusions, each of the embrasure contacting protrusions surrounding the embrasure conforming body and having respective contours that substantially match cross sections of the embrasure conforming body at corresponding lateral positions of the embrasure conforming body, the embrasure contacting protrusions being offset laterally with respect to one another.

44. The headpiece of claim 43, wherein the first material with the first rigidity comprises a plastic, and the second material with the second rigidity comprises a rubber, and wherein the plurality of embrasure contacting protrusions comprises the second material.

45. The headpiece of any one or more of claims 43 to 44, wherein the embrasure conforming body tapers as the embrasure conforming body extends medially from the inner face of the respective arm, the tapering of the embrasure conforming body comprising decreasing cross-sectional dimensions as the embrasure conforming body extends from the inner face, the cross-sectional dimensions being defined within the cross sections, the cross sections being oriented along normal planes, the normal planes being substantially perpendicular to the lateral axis.

46. The headpiece of any one or more of claims 43 to 45, wherein a contour of each of the plurality of embrasure contacting protrusions is confined within a normal plane.

47. The headpiece of any one or more of claims 43 to 46, wherein the embrasure contacting protrusions are offset substantially equidistant with one another with respect to a lateral direction.

48. The headpiece of any one or more of claims 43 to 47, wherein the contours of the embrasure contacting protrusions comprise a concave quadrilateral geometry or a triangular geometry.

49. The headpiece of any one or more of claims 43 to 48, wherein the embrasure conforming body comprises a profile of a pyramid or a truncated pyramid.

50. The headpiece of any one or more of claims 43 to 49, wherein the substrate core comprises a different profile compared to the profile of the embrasure conforming body.

51. The headpiece of any one or more of claims 43 to 50, wherein the substrate core comprises a substantially conical or cylindrical profile.

52. The headpiece of any one or more of claims 43 to 51 , wherein the embrasure contacting interface is disposed at an upper portion of the headpiece, and the headpiece further comprises a scraper disposed at a bottom surface of the headpiece, wherein the scraper comprises one or more serrations configured to scrape a tongue surface.

53. The headpiece of claim 52, wherein the one or more serrations include at least one ridge having a cross-sectional shape of a single-bevel blade.

54. The headpiece of claim 53, wherein the one or more serrations includes a first serration having a cross-sectional shape of a blade with a single upwards- facing bevel and one or more second serrations having a cross-sectional shape of a blade with a single downwards-facing bevel.

55. The headpiece of claim 52, wherein the one or more serrations include a first serration that includes a blade spanning across a width of the scraper and a second serration that includes a plurality of individual bristles arranged across the width of the scraper.

56. The headpiece of any one or more of claims 43 to 55, wherein the embrasure contacting interface further comprises a transitioning body that directly contacts the embrasure conforming body when the embrasure conforming body terminates at the first distance or the second distance, the transitioning body being aligned with the floss filament with respect to a height, wherein the embrasure conforming body, the transitioning body, and the floss filament are substantially collinear.

57. The headpiece of any one or more of claims 43 to 56, wherein the transitioning body comprises a rounded tip at a first end farther from the inner face of the respective arm and comprises a pyramidal face at a second end that directly contacts the embrasure conforming body, wherein the rounded tip is configured as a leading edge to facilitate sliding of the embrasure conforming body along an embrasure.

58. The headpiece of any one or more of claims 43 to 57, wherein the floss filament comprises an exposed portion between the two rounded tips of the two transitioning bodies and an unexposed portion between each respective inner face and the respective rounded tips.

59. The headpiece of any one or more of claims 43 to 58, wherein the substrate core comprises a flat base across the outer face of the respective arm and a first projection that extends from the flat base through the respective ami along the medial axis and terminating at the first distance past the inner face.

60. The headpiece of claim 59, wherein the outer face of each of the first arm and the second arm is encased in a rubber layer that is less than or equal to a height of the flat base of the core of the embrasure contacting interface, such that the flat base of the substrate core remains exposed.

61. The headpiece of any one or more of claims 59 to 60 wherein the embrasure conforming body corresponds to an overmold disposed around the first projection.

62. The headpiece of any one or more of claims 59 to 61, wherein the medial axis is located inset from a tip of the first arm and a tip of the second arm; and the embrasure conforming body further comprises:81.second projection of the substrate core, the second projection extending from the flat base across the outer face through the respective arm and comprising an opposite base spanning across an area on the inner face of the respective arm that is located between the medial axis and the tip of the respective arm.

63. The headpiece of claim 62, wherein the opposite base of the second projection of the core has a triangular profile that extends into a concavity of a concave quadrilateral geometry of a cross-section of the embrasure conforming body.

64. The headpiece of any one or more of claims 43 to 63, wherein the plurality of embrasure contacting protrusions have a uniform lateral spacing between one another.

65. The headpiece of claim 64, wherein the uniform lateral spacing is greater than a thickness of the plurality of embrasure contacting protrusions.

66. The headpiece of any one or more of claims 43 to 65, wherein the first distance is approximately one-third of a distance of the floss filament spanning from the inner face of the first arm to the inner face of the second arm.

67. A foundational component of an oral care device, comprising:86.a first arm and a second arm disposed on opposite ends of a headpiece body and extending parallel to one another along a height direction from the headpiece body, each of the first arm and the second arm including an inner face and an outer face;87.a floss filament extending between the inner face of the first arm and the inner face of the second arm along a lateral axis perpendicular to the height direction, and directly attached to each of the first arm and the second arm:88.a substrate core that extends from the outer face to the inner face of the respective arm and medially from the inner face of the respective arm and terminating at a first distance past the inner face of the respective arm; and89.one or more stabilizing cores attached to the outer face or the inner face, the one or more stabilizing cores configured to prevent flexion of the respective arm during a molding process to mold an embrasure conforming body onto the substrate core.

68. The foundational component of claim 67, wherein the one or more stabilizing cores comprises an outer stabilizing core attached to the outer face and aninner stabilizing core attached to the inner face, wherein the substrate cores, the first arm, the second arm, and the stabilizing cores form a unitary structure.

69. The foundational component of claim 68, wherein the outer stabilizing core comprises cross sections having a substantially concave quadrilateral or triangular profile, wherein the cross sections are defined along normal planes perpendicular to the lateral axis.

70. The foundational component of any one or more of claims 67 to 68, wherein the inner stabilizing core comprises a triangular structure that extends medially from the respective arm, the inner stabilizing core being configured to absorb inward or outward flexing flexion applied to the substrate core.

71. The foundational component of any one or more of claims 67 to 70, wherein the substrate cores, the first arm, the second arm, and the stabilizing cores comprise a rigid plastic.

72. The foundational component of any one or more of claims 67 to 71, further comprising one or more embrasure cleaning features disposed over the substrate core, the one or more embrasure cleaning features extending medially from the inner face of the respective arm and terminating at the first distance or a second distance past the inner face of the respective arm, the one or more embrasure cleaning features comprising a second material with a second rigidity less than a first rigidity.

73. The foundational component of any one or more of claims 67 to 72, wherein the embrasure cleaning features comprise a bracket brush, a toothface scrub, or a prosthetic sweep.

74. The foundational component of any one or more of claims 67 to 73, wherein the substrate core comprises a substantially cylindrical or conical profile.

75. An oral care device comprising:98.a handle comprising a gripping portion and a neckpiece; and a headpiece removably coupled to the neckpiece, the headpiece comprising:99.a first arm and a second arm disposed on opposite ends of a headpiece body and extending parallel to one another along a height direction from the headpiece body, each of the first arm and the second arm including an inner face and an outer face;100.a floss filament extending between the inner face of the first arm and the inner face of the second arm along a medial axis perpendicular to the height direction, and directly attached to each of the first arm and the second arm, an embrasure contacting interface extending medially from the inner face of a respective arm, wherein the embrasure contacting interface comprises:101.a substrate core that extends from the outer face to the inner face of the respective arm and medially from the inner face of the respective arm and terminating at a first distance past the inner face of the respective arm, the substrate core comprising a first material with a first rigidity7;102.an embrasure conforming body disposed over the substrate core, the embrasure conforming body extending medially from the inner face of the respective arm and terminating at the first distance or a second distance past the inner face of the respective arm, the embrasure conforming body comprising a second material with a second rigidity less than the first rigidity; and103.a plurality of embrasure contacting protrusions, each of the embrasure contacting protrusions surrounding the embrasure conforming body and having respective contours that substantially match cross sections of the embrasure conforming body at corresponding lateral positions of the embrasure conforming body, the embrasure contacting protrusions being offset laterally with respect to one another.

76. The oral care device of claim 75, wherein the headpiece comprises protruding mating features that are complementary with embedded recessed features within an interlock of the neckpiece, the protruding mating features comprising a first mating feature, a second mating feature, and a third mating feature, the first mating feature having an opposite orientation compared to the third mating feature, and the first mating feature and the third mating feature being substantially equidistant with respect to a lateral direction from a centeraxis of the second mating feature, the center axis extending along a height direction or a length direction.

77. The oral care device of claim 76, wherein the neckpiece comprises the interlock, the interlock comprising a recessed groove and embedded recessed features positioned within the recessed groove, the embedded recessed features comprising a first embedded recessed feature, a second embedded recessed feature, and a third embedded recessed feature, the third embedded recessed feature having an opposite orientation relative to an orientation of the first embedded recessed feature, and the first embedded recess and the third embedded recess are substantially equidistant with respect to a lateral direction from a center axis of the second embedded recessed feature.

78. The oral care device of claim 77, wherein the first embedded recessed feature is complementary to the first mating feature or the third mating feature, the second embedded recessed feature is complementary to the second mating feature, and the third embedded recessed feature is complementary to the third mating feature or the first mating feature.

79. The oral care device of any one or more of claims 75 to 78, wherein the handle comprises a constant cross-section portion corresponding to a gripping end and the neckpiece has a variable cross-section portion, wherein the substantially constant cross-section portion comprises constant cross-section surfaces along a length of the constant cross-section portion, the variable cross-section portion being directly adjacent to the constant cross-section portion, the variable cross-section portion having variable cross-section surfaces along a length of the variable cross-section portion, wherein the constant cross-section surfaces have a fixed width and a fixed height, and at least a portion of the variable cross-section surfaces having different widths or different heights.

80. The oral care device of any one or more of claims 75 to 79, wherein the first material with the first rigidity comprises a plastic, and the second materialwith the second rigidity comprises a rubber, and wherein the plurality of embrasure contacting protrusions comprises the second material.

81. The oral care device of any one or more of claims 75 to 80, wherein the embrasure conforming body tapers as the embrasure conforming body extends medially from the inner face of the respective arm, the tapering of the embrasure conforming body comprising decreasing cross-sectional dimensions as the embrasure conforming body extends from the inner face, the cross- sectional dimensions being defined within the cross sections, the cross sections being oriented along normal planes, the normal planes being substantially perpendicular to the lateral axis.

82. The oral care device of any one or more of claims 75 to 81, wherein a contour of each of the plurality of embrasure contacting protrusions is confined within a normal plane.

83. The oral care device of any one or more of claims 75 to 82, wherein the embrasure contacting protrusions are offset substantially equidistant with one another with respect to the lateral direction.

84. The oral care device of any one or more of claims 75 to 83, wherein the contours of the embrasure contacting protrusions comprise a concave quadrilateral geometry or a triangular geometry.

85. The oral care device of any one or more of claims 75 to 84, wherein the embrasure conforming body comprises a profile of a pyramid or a Iruncalcd pyramid.

86. The oral care device of any one or more of claims 75 to 85, wherein the substrate core comprises a different profile compared to the profile of the embrasure conforming body.

87. The oral care device of any one or more of claims 75 to 86, wherein the substrate core comprises a substantially conical or cylindrical profile.

88. The oral care device of any one or more of claims 75 to 87, wherein the embrasure contacting interface is disposed at an upper portion of the headpiece, and the headpiece further comprises a scraper disposed at a bottom surface of the headpiece, wherein the scraper comprises one or more serrations configured to scrape a tongue surface.

89. The oral care device of claim 88, wherein the one or more serrations include at least one ridge having a cross-sectional shape of a single-bevel blade.

90. The oral care device of claim 89, wherein the one or more serrations includes a first serration having a cross-sectional shape of a blade with a single upwards-facing bevel and one or more second serrations having a cross- sectional shape of a blade with a single downwards -facing bevel.

91. fhe oral care device of claim 88, wherein the one or more serrations include a first serration that includes a blade spanning across a width of the scraper and a second serration that includes a plurality of individual bristles arranged across the width of the scraper.

92. The oral care device of any one or more of claims 75-91 , wherein the embrasure contacting interface further comprises a transitioning body that directly contacts the embrasure conforming body when the embrasure conforming body terminates at the first distance or the second distance, the transitioning body being aligned with the floss filament with respect to a height, wherein the embrasure conforming body, the transitioning body, and the floss filament are substantially collinear.

93. The oral care device of any one or more of claims 75-92, wherein the transitioning body comprises a rounded tip at a first end farther from the inner face of the respective arm and comprises a pyramidal face at a second end that directly contacts the embrasure conforming body, wherein the rounded tip is configured as a leading edge to facilitate sliding of the embrasure conforming body along an embrasure.

94. The oral care device of any one or more of claims 75-93, wherein the floss filament comprises an exposed portion between the two rounded tips of the two transitioning bodies and an unexposed portion between each respective inner face and the respective rounded tips.

95. The oral care device of any one or more of claims 75-94, wherein the substrate core comprises a flat base across the outer face of the respective arm and a first projection that extends from the flat base through the respective arm along the medial axis and terminating at the first distance past the inner face.

96. The oral care device of any one or more of claims 75-95, wherein the outer face of each of the first arm and the second arm is encased in a rubber layer that is less than or equal to a height of the flat base of the substrate core of the embrasure contacting interface, such that the flat base of the substrate core remains exposed.

97. The oral care device of any one or more of claims 95 or 96, wherein the embrasure conforming body corresponds to an overmold disposed around the first projection.

98. The oral care device of any one or more of claims 95-97, wherein the medial axis is located inset from a tip of the first arm and a tip of the second arm; and the embrasure conforming body further comprises:125.a second projection of the substrate core, the second projection extending from the flat base across the outer face through the respective arm and comprising an opposite base spanning across an area on the inner face of the respective arm that is located between the medial axis and the tip of the respective arm.

99. The oral care device of claim 98, wherein the opposite base of the second projection of the core has a triangular profile that extends into a concavity of a concave quadrilateral geometry of a cross-section of the embrasure conforming body.

100. The oral care device of any one or more of claims 75-99, wherein the plurality of embrasure contacting protrusions have a uniform lateral spacing between one another.

101. The oral care device of claim 100, wherein the uniform lateral spacing is greater than a thickness of the plurality of embrasure contacting protrusions.

102. The oral care device of any one or more of claims 75-101, wherein the first distance is approximately one -third of a lateral dimension of the floss filament spanning from the inner face of the first arm to the inner face of the second arm.

103. An oral care device kit comprising:130.the oral care device of any one or more of claims 75-102; and131.an oral care device cover configured to house the oral care device, wherein the oral care device cover comprises:132.an open bottom surface;133.a left side surface;134.a front surface;135.a right side surface;136.a back surface; and137.a closed top surface, wherein the oral care device cover comprises one or more chamfered edges along the closed top surface and the front surface and the back surface comprise arched surfaces.

104. The oral care device kit of claim 103, wherein the oral care device cover contains one or more cleaning chemicals configured to sanitize the oral care device when the oral care device is housed within the oral care device cover.

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