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36 results about "Gingival margin" patented technology
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The free gingival margin is the interface between the sulcular epithelium and the epithelium of the oral cavity. This interface exists at the most coronal point of the gingiva, otherwise known as the crest of the marginal gingiva.
High-resolution ultrasonography of gingival biomarkers for periodontal diagnosis in healthy and diseased subjects
A method for measuring periodontal disease and treating diseases associated therewith includes: obtaining B-mode ultrasound images of a dentition and periodontium of a patient; identifying gingival margin (GM), alveolar bone crest (ABC), cementoenamel junction (CEJ), periodontal ligament (PDL), and gingival edge (GE) biomarkers on the B-mode ultrasound images, the GE biomarker being a part of periodontal soft tissue most distal from a tooth surface; evaluating a metric associated with periodontal disease using one or more of the GM, ABC, CEJ, PDL and GE biomarkers and based at least in part on the evaluating, performing an act that implements and / or adjusts a therapeutic treatment of a periodontal disease.
Owner:RGT UNIV OF CALIFORNIA +1
Invisible appliance
The utility model provides an invisible appliance which comprises a shell-shaped body and a tongue muscle training piece, and the shell-shaped body is provided with a cavity for accommodating a plurality of maxillary teeth; the tongue muscle training piece is connected to the lingual gingival margin of the shell-shaped body or adjacent to the gingival margin, and is provided with a sensing cavity and a sensing opening for exposing the sensing cavity; wherein the sensing port is positioned on the tongue side of the tongue muscle training piece; the tongue muscle training piece is provided with a sensing cavity and a sensing opening exposing the sensing cavity, the sensing opening is located in the side, facing the tongue body, of the tongue muscle training piece, the tongue of a user completes tongue muscle training by touching the sensing opening and partially stretching into the sensing cavity, the experience feeling and interestingness are good, the training enthusiasm of the user can be stimulated, and the user experience is improved. And the tongue muscle training effect is improved.
Owner:SHANGHAI EA MEDICAL INSTR CO LTD
Intraoral scanning interactive segmentation method based on adaptive curvature
The invention relates to the technical field of computer graphic processing, in particular to an intraoral scanning interactive segmentation method based on self-adaptive curvature, which comprises the following steps: importing a three-dimensional model into a system, calculating the curvature value of each vertex by the system by adopting a self-adaptive curvature analysis method, and identifying and extracting a gingival margin line part; correcting an inaccurate part through an interactive interface to ensure the continuity and accuracy of the gingival margin line; gradually expanding adjacent vertexes and patches which conform to a curvature threshold based on the seed points, and extracting a complete gingival margin line; accurate control on the form of the gingival margin line is realized through a self-adaptive curve fitting morphological processing method; the system uses a connected component detection algorithm to identify and segment the independent dental crown area, and each connected component is classified into an independent dental crown or gingival area to realize segmentation. According to the method, curvature analysis and a small amount of manual interaction are combined, so that the method can adapt to diversified tooth forms and maintain relatively high segmentation precision.
Owner:BEIJING UNIDRAW VR TECH RES INST CO LTD
Intraoral light irradiation device
To provide an intraoral light irradiating device which not only accurately irradiates light onto the gingival margin and free gingiva over the entire dentition of a user, but also gives an excellent wearing feeling when the user wears a mouthpiece deep in the oral cavity. [Solution] In an intraoral phototherapy device having a mouthpiece 1 and a light source 2 disposed thereon and equipped with a plurality of light emitters 20, the mouthpiece has an occlusion tray 3 and front and rear flanges 4, 5 that face the outer and inner surfaces of the wearer's upper and lower gums, respectively, and the upper and lower edges of the front flange are provided with recesses 4c in which the wearer's upper and lower frenulum are respectively positioned, and the upper and lower edges of the rear flange are provided with recesses 5c in which the wearer's palatine raphe and lingual frenulum are respectively positioned.
Owner:JAPAN PBM HEALING KK
Mouthpiece for distribution of a liquid in a user's mouth
A mouthpiece (10) for distribution of a liquid in a user's mouth, the mouthpiece (10) being configured to be positioned within a superior vestibule of the user's mouth apical to a gingival margin, the mouthpiece (10) comprising: an inlet (12) configured to receive a fluid supply, at least two fluid outlets (22), and an internal channel (14) fluidly connecting the inlet (12) to the fluid outlets (22); and a flange portion (16) at least partially surrounding the channel (14) for adhering to a user's gum; wherein a thickness of the channel (14) is greater than a thickness of the flange portion (16).
Owner:ALIVA AS
Cleaning brush for dental implant
The invention relates to the technical field of electric toothbrushes, in particular to a cleaning brush for dental implants. Comprising a housing; the control switch is mounted on the outer wall of the shell; the mounting shell is arranged at the top of the shell; the sound wave motor is installed in the shell, and the sound wave motor is electrically connected with the control switch; and the rotating rod is rotationally connected to the interior of the mounting shell, an insertion hole is formed in the bottom of the rotating rod, an output shaft of the sound wave motor is inserted into the insertion hole, and a spiral groove is further formed in the upper end of the rotating rod. The sound wave motor can drive the rotating rod to do small-amplitude and high-frequency reciprocating forward and reverse rotation, the spiral groove in the rotating rod is matched with the ball on the inner side of the sliding sleeve, and rotation can be converted into transverse high-frequency reciprocating movement of the sliding sleeve and the first brush and the second brush connected to the sliding sleeve; the transverse movement direction is matched with the trend of an annular gingival margin area at the junction of a dental crown and gingiva of the implant tooth, so that bacterial plaque biofilms accumulated in a high-risk area can be effectively removed.
Owner:ZHEJIANG YA KANGJIAN TECHNOLOGY DEVELOPMENT CO LTD
Clear aligner
A clear aligner, comprising a shell-shaped body and a tongue muscle training member, wherein the shell-shaped body has a cavity for accommodating a plurality of maxillary teeth; and the tongue muscle training member is connected to the lingual gingival margin of the shell-shaped body or adjacent to the gingival margin, and has a sensing cavity and a sensing port exposing the sensing cavity, the sensing port being located on the lingual side of the tongue muscle training member. A user trains tongue muscles by touching the sensing port with their tongue and partially extending their tongue into the sensing cavity, such that a relatively good sense of experience and enjoyment are provided, the enthusiasm of the user for training can be stimulated, and a tongue muscle training effect is improved.
Owner:SHANGHAI EA MEDICAL INSTR CO LTD
A dental pre-anesthesia device based on an edible matrix, and a method of preparation and use thereof
This invention belongs to the field of medical experimental technology, specifically relating to a dental pre-anesthesia device based on an edible matrix, its preparation method, and its application. The device includes a handheld stick, a sugar ball, and a receiving box with a through hole. The box contains a gel anesthetic, which consists of an outer layer of sustained-release gel matrix and an inner anesthetic gel unit. The sustained-release gel matrix is made of gelatin, pectin, or sodium alginate and is ring-shaped to conform to tooth shape. The anesthetic gel unit contains components such as lidocaine hydrochloride, chitosan, and carbomer 980, exhibiting high adhesiveness. Preparation involves first obtaining the anesthetic gel unit, then encapsulating it with the sustained-release gel matrix and coating it with sugar, and finally assembling the device. This device, through its edible matrix and sugar coating, transforms the anesthesia process into a "candy-eating" experience, significantly reducing patient fear, precisely conforming to the teeth and gingival margin, preventing anesthetic leakage, and improving the safety and effectiveness of anesthesia, making it particularly suitable for pediatric dental pre-anesthesia.
Owner:THE FIRST AFFILIATED HOSPITAL OF BENGBU MEDICAL COLLEGE +1
Dental appliance
The utility model discloses a tooth correcting device. Belongs to the technical field of orthodontics, the orthodontic appliance comprises a plurality of fixing pieces, a connecting piece and a traction assembly, the fixing pieces are suitable for being fixed on a plurality of anchorage teeth in a one-to-one correspondence mode, the traction assembly comprises a traction hook, a connecting buckle and a traction line, the traction hook is provided with a traction end and a connecting end, the traction end is located on the lingual side of an affected tooth, and the connecting end is connected with the connecting piece; or the traction end is located on the cheek side of the diseased tooth, the connecting end is connected with the fixing piece, the connecting buckle is bonded to the side, facing or away from the traction end, of the diseased tooth, and the traction end is connected with the connecting buckle through a traction line so as to apply correction force for correcting jaw locking to the diseased tooth, so that the diseased tooth is reset towards the interior of the alveolar bone, and correction of jaw locking of the diseased tooth is achieved. The traction ends are located on the sides, away from the occlusal surface, of the gingival edges of the corresponding diseased teeth, correction force comprises gingival press-in force, and the diseased teeth can be effectively prevented from stretching in the correction process.
Owner:WUHAN UNIV
Manufacturing method and application of digital buckle type guide plate for dental crown lengthening
The invention relates to the technical field of oral cavity plastic surgery, in particular to a manufacturing method of a digital buckle type guide plate for dental crown lengthening, which comprises the following steps of: 1, scanning an upper jaw dental arch and a lower jaw dental arch of a patient to obtain intraoral scanning data, recording an occlusion relationship at a maximum tooth tip staggering position, and exporting the data for later use; step 2, acquiring facial three-dimensional scanning data, alveolar bone and craniofacial structure data, digital facial arch data, mandibular position and mandibular movement parameters of the patient; 3, fitting various data to determine ideal gingival margin position parameters and bone trimming contour line parameters required in the operation; and 4, on the basis of the parameters determined in the step 3, buckle type guide plates are designed in design software, the buckle type guide plates comprise a gingival resection guide plate and an osteoplasty guide plate, and finally the buckle type guide plates are printed through a 3D printer. By implementing the buckle type guide plate prepared by the method, the stability, the accuracy, the operation convenience and the operation efficiency in the operation process of the dental crown extension surgery are remarkably improved.
Owner:HOSPITAL OF STOMATOLOGY SUN YAT SEN UNIV
Oral implant planning method, equipment, medium and product
The invention discloses an oral implant planning method, equipment, a medium and a product, and belongs to the technical field of medical image processing. The method comprises the following steps: acquiring oral scanning data and CBCT data of a target object, a registration result of the oral scanning data and the CBCT data, and gingival margin line data and virtual dental crown data of an edentulous area in the registration result; and inputting the gingival margin line data, the virtual dental crown data, the CBCT data and the intentional brand identifier into a rule-based implant parameter decision model to obtain implant parameter data for the tooth missing area of the target object, the rules comprise a current oral implantology principle, a predetermined expert experience principle and implant attribute data under at least one predetermined implant brand, the implant parameter decision model is realized based on an expert decision tree in combination with a constraint satisfaction planning algorithm, and the parameter data comprises an operation implantation direction and attribute data of the implant. According to the embodiment of the invention, the false tooth use experience of the target object can be improved.
Owner:SHANGHAI YANGSHAN MEDICAL TECHNOLOGY CO LTD
High-resolution ultrasonography of gingival biomarkers for periodontal diagnosis in healthy and diseased subjects
A method for measuring periodontal disease and treating diseases associated therewith includes: obtaining B-mode ultrasound images of a dentition and periodontium of a patient; identifying gingival margin (GM), alveolar bone crest (ABC), cementoenamel junction (CEJ), periodontal ligament (PDL), and gingival edge (GE) biomarkers on the B-mode ultrasound images, the GE biomarker being a part of periodontal soft tissue most distal from a tooth surface; evaluating a metric associated with periodontal disease using one or more of the GM, ABC, CEJ, PDL and GE biomarkers and based at least in part on the evaluating, performing an act that implements and / or adjusts a therapeutic treatment of a periodontal disease.
Owner:RGT UNIV OF CALIFORNIA +1
Buffering retention elastic jaw pad
ActiveCN222172351Ucomfortable to weareasy to wearDental articulatorsEducational modelsPolyethylene terephthalate glycolGonial angle
The utility model provides a buffer retention elastic jaw pad which is wrapped on the outer surface of teeth of a patient and comprises a double-layer soft and hard pressure membrane, a bulge arranged on the double-layer soft and hard pressure membrane and a dovetail-shaped window arranged at the tail end of the double-layer soft and hard pressure membrane, the double-layer soft and hard pressing membrane comprises a hard layer and a soft layer, the hard layer is the outer layer of the double-layer soft and hard pressing membrane, and the soft layer is the inner layer of the double-layer soft and hard pressing membrane; the protrusions, the dovetail-shaped windows and the double-layer soft and hard pressing membrane are integrally formed. The side, close to the gingival margin of the tooth neck of the patient, of the buffer retention elastic jaw pad is a jaw pad edge, the jaw pad edge is an inclined plane, and the inclination angle is 30 degrees. The double-layer soft and hard compressed membrane is of a double-layer structure combining polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol ester and thermoplastic polyurethane, has elasticity, is comfortable to wear by a patient, and is convenient to take and wear; and the double-layer soft and hard compressed membrane simulates an intraoral occlusion state through double-jaw occlusion, so that the double-layer soft and hard compressed membrane has a tooth fossa shape which is the same as that of the teeth of the patient, and the chewing function of the patient is improved.
Owner:HOSPITAL OF STOMATOLOGY CHINA MEDICAL UNIV
Tooth crown and bridge restoration tooth tray and design and manufacturing method thereof
ActiveCN110811885BImprove production efficiencyImprove manufacturing precisionImpression capsGingival marginCrown bridge
Owner:PEKING UNIV SCHOOL OF STOMATOLOGY
Mouthpiece for distribution of a liquid in a user's mouth
A mouthpiece 10 for distribution of a liquid in a user’s mouth, the mouthpiece 10 being configured to be positioned within a superior vestibule of the user’s mouth apical to a gingival margin, the m
Owner:ALIVA AS
Tooth root type dental implanting method using oral cavity CBCT image
A method of using an oral cavity CBCT image for designing a one-stage tooth root type dental implant having a fixation device, comprising: before oral cavity CBCT imaging for an affected tooth (1), inserting a metal wire (5) into the gingival sulcus (9) of the gingival margin of the affected tooth, and acquiring CBCT image data of the emergence portion from the gingival margin to the alveolar bone margin of the affected tooth (1), the intercuspal occlusion relationship, and the tooth root and the alveolar socket of the affected tooth, so as to provide CBCT image data of the intercuspal occlusion relationship that satisfies the design of the tooth root type dental implant; then converting the CBCT image data into the three-dimensional patch model and performing repeated processing on the surface to obtain a final dental implant model; and on the basis of the final dental implant model, performing 3D printing to manufacture a dental implant.
Owner:QINGDAO DENTAL SECRETARY MEDICAL TECHNOLOGY CO LTD
Attachment for effectively reducing the incidence of decrowning and improving the efficiency of overall tooth movement
An attachment that effectively reduces the incidence of undercut and improves the overall efficiency of tooth movement includes an attachment body with a gingival portion and a vertical portion. The vertical portion includes a mesial portion located mesially to the crown and a distal portion located distally to the crown. The gingival portion is close to the gingival margin and located slightly below the undercut of the crown. Both the gingival portion and the vertical portion have opposing lingual and buccal surfaces, opposing occlusal and gingival surfaces, and opposing mesial and distal surfaces. The lingual surface is bonded to the tooth surface. The gingival, occlusal, mesial, and distal surfaces are all arc-shaped or spherical. This structural design not only greatly increases the undercut of the tooth but also provides multiple contact areas and a larger force application area with the orthodontic appliance, providing more effective coverage area for mesial or distal tooth movement. This effectively reduces the incidence of undercut and improves the overall efficiency of tooth movement.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY
A healing base and construction method, preparation method, computer readable storage medium, and device
The present invention provides a healing abutment and a construction method, a preparation method, a computer-readable storage medium, and a device. The healing abutment is provided with a healing cap and a connection part for connecting an implant from top to bottom, and the healing cap is provided with a regeneration section, a subgingival section, and a gingival margin section from the proximal connection end to the distal connection end; the height of the regeneration section is 2.2 to 2.8 mm, and the shape is a shape of 0.8 to 1.2 mm inward from the same position of the original natural tooth on the tooth to be implanted; the subgingival section is an area from the gingival plane to 0.3 to 0.7 mm below the gingival plane, and the shape is a shape of 0.2 to 0.6 mm inward from the same position of the original natural tooth on the tooth to be implanted; the gingival margin section is an area 0.8 to 1.2 mm above the subgingival section, and the shape is a shape of the same position of the original natural tooth on the tooth to be implanted. The present invention can close the alveolar socket, avoid the exposure of the internal bone replacement material and infection, and has a supporting effect on the original gums, and can obtain an ideal gum shape.
Owner:SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
Gingival margin line generation method and device, computer equipment and storage medium
The application relates to a gum edge line generation method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring a single tooth edge line to obtain a tooth gum edge line; calculating a gum contour line according to the tooth gum edge line, and calculating a gum edge line according to the gum contour line; and updating the gum edge line according to a tooth displacement data table to obtain an updated gum edge line. The method can automatically cut a tooth corrector, improve the production efficiency of the tooth corrector and reduce the production cost. Meanwhile, the application improves the precision of gum edge cutting of the tooth corrector, so that the gum is not damaged when a user wears the tooth corrector, and the comfort of the user wearing the tooth corrector is improved.
Owner:SHANGHAI MAIYA TECH CO LTD +1
A method for evaluating the effective bonding area of a maryland bridge abutment proximal surface
This invention discloses a method for evaluating the effective bonding area of proximal surfaces of bridge abutments in Maryland. The method involves acquiring a three-dimensional digital model of the oral cavity containing the target abutment tooth, standardizing the model to construct a standardized triangular mesh, extracting sampling point clouds, and establishing a correspondence between sampling points and mesh patches. Tooth position segmentation is performed on the sampling point cloud to determine the target abutment tooth and its adjacent teeth. Integrity detection is performed on the proximal surface region of the target abutment tooth, and data completion is performed when missing or distorted data is detected. Interactive three-dimensional segmentation is performed based on the surface data of the target abutment tooth to obtain the proximal surface segmentation results. Constraints are then applied using enamel boundaries, gingival margin safety distances, incisal or occlusal boundaries, and undercut exclusion conditions to obtain the effective bonding area. The effective bonding area is mapped to the standardized triangular mesh, and the three-dimensional surface areas of the corresponding mesh patches are accumulated to output the effective bonding area evaluation result.
Owner:SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
Intelligent gingival retraction device for mouth rehabilitation
The invention discloses an intelligent gingival retraction device for oral rehabilitation, which is used for solving the technical problems that in the existing gingival retraction operation, a doctor needs to manually measure and cut a gingival retraction line, the clinical operation time is prolonged, and the clinical operation difficulty is increased. A control module is arranged in a machine body; a gingival retraction head is arranged at the first end of the machine body, a bobbin wound with a gingival retraction line is mounted in the machine body, a line outlet is formed in the first end of the machine body, one end of the bobbin is connected with a first driving part, and a line cutting assembly is arranged at the position, close to the line outlet, of the machine body; the first end part of the machine body is also provided with a camera, and the wire cutting assembly, the first driving piece and the camera are electrically connected with the control module; the camera transmits first information to the control module after recognizing the tooth shape and position of a patient, and the control module calculates the total gingival margin length of the teeth according to the first information, so that the first driving piece is controlled to drive the bobbin to release the gingival line with the length corresponding to the total gingival margin length of the teeth, and the line cutting assembly is controlled to cut off the gingival line.
Owner:HOSPITAL OF STOMATOLOGY SUN YAT SEN UNIV
Dental and jaw segmentation method based on optimal seed point of harmonic field scalar intensity
The present invention belongs to the field of digital stomatology, and in particular relates to a method for tooth and jaw segmentation based on optimal seed points of harmonic field scalar intensity, which can quickly and accurately find the gingival margin line on the tooth and jaw 3D model. The steps include: picking feature points on each tooth 3D model in the tooth and jaw 3D model. Constructing a segmentation domain for each tooth 3D model, and constructing a harmonic field within the segmentation domain, and assigning scalar values to mesh vertices through the harmonic field. Screening is performed based on the scalar values of the mesh vertices to obtain an initial screening area and a final screening area, and the final screening area is clustered to obtain a class area. Interpolating the one-ring neighborhood edges of the mesh vertices in the initial screening area, and adding the interpolation points to the corresponding sets according to the scalar values. Based on the one-ring neighborhood vertices of the mesh vertices in the class area and the scalar values of the interpolation points, the scalar intensity of the mesh vertices in the class area is calculated, and the optimal seed point is obtained. The tooth gingival margin line is extracted based on the optimal seed point and the tooth and jaw segmentation is completed.
Owner:TAIYUAN UNIVERSITY OF TECHNOLOGY +1
A method for manufacturing a 3D printing resin filling guide plate
PendingCN122123798ADental implantsAdditive manufacturing apparatusGingival marginPatient satisfaction
This invention relates to the field of dental restoration technology and discloses a method for fabricating a 3D-printed resin filling guide. In clinical practice, the affected tooth is prepared and color matched. Three-dimensional data of the patient's upper and lower jaw dentition and the prepared abutment tooth data are obtained through digital oral scanning, along with the occlusal relationship. The abutment tooth data includes the abutment tooth size, axial direction, and gingival margin morphology. The 3D-printed resin filling guide fabrication method provided by this invention, utilizing digital design and 3D printing technology, creates a resin filling guide that meets the patient's personalized needs. This fundamentally overcomes many drawbacks of existing dental resin restoration techniques, achieving precision, personalization, and minimally invasive dental resin restoration, while improving clinical operational efficiency and patient satisfaction with aesthetic treatment.
Owner:彭靖园
Dental instrument
The dental instrument is worn on the maxillary dentition and comprises a shell-shaped body and a palate device connected with the shell-shaped body, the shell-shaped body comprises a first section and a second section, the first section is provided with a tooth containing cavity for containing at least one tooth in a left rear tooth area, and the second section is provided with a tooth containing cavity for containing at least one tooth in a right rear tooth area. The second section is provided with a tooth accommodating cavity for accommodating at least one tooth in the rear tooth area on the right side; one side of the palate device is connected to the lingual side gingival margin of the first section, the other side of the palate device is connected to the lingual side gingival margin of the second section, and the whole palate device is arranged in an arch shape in the palate direction; a storage device used for containing dressing is arranged at the preset position, corresponding to the palate wound, of the palate device, the side, close to the palate, of the storage device is of an opening structure, the dressing covers and is connected to the palate wound in a pressed mode in the wearing process, and dressing treatment can be conveniently conducted on the palate wound.
Owner:SHANGHAI SMARTEE DENTI TECH CO LTD
Accessory capable of effectively reducing occurrence rate of sleeve disengagement and improving overall moving efficiency of teeth
An accessory capable of effectively reducing the occurrence rate of sleeve falling and improving the overall moving efficiency of teeth comprises an accessory body, the accessory body is provided with a gingival part and a vertical part, and the vertical part comprises a mesial part located in the mesial part of a dental crown and a distal part located in the distal part of the dental crown; the gingival square part is close to the gingival margin and is positioned slightly below the undercut of the dental crown; each of the gingival square part and the vertical part is provided with a tongue side surface and a cheek side surface which are oppositely arranged, a joint side surface and a gingival side surface which are oppositely arranged, and a mesial surface and a distal surface which are oppositely arranged; the tongue side surface is adhered to the tooth surface; the gingival side surface, the conjunctival side surface, the mesial surface and the distal surface are all cambered surface-shaped or spherical, so that the undercut of teeth is greatly increased, the orthodontic appliance has contact areas in multiple directions and a larger force application area, and more effective wrapping areas are provided for mesial or distal movement of the teeth; the occurrence rate of the sleeve falling problem can be effectively reduced, and the overall tooth moving efficiency can be effectively improved.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY
New all-around cleaning toothbrush
ActiveJP3256394UGingival marginBuccal mucosa
We offer a new type of all-around cleaning toothbrush that reduces blind spots during cleaning and improves cleaning effectiveness. [Solution] The new all-directional cleaning toothbrush is equipped with a toothbrush handle 1, a toothbrush body 2 is provided at the upper end of the toothbrush handle, and a toothbrush head 3 is fixed to the upper end of the toothbrush body. A silicone strip 5 is fixed to the side of the toothbrush head, and a silicone pad 4 is fixed to the back surface of the toothbrush head. The silicone strip is formed in a U shape. A rotating shaft 6 is fixed to the upper end of the toothbrush handle, an annular groove is formed inside the toothbrush handle, and a locking mechanism is provided inside the annular groove, and the locking mechanism includes a connecting ring. In this invention, the silicone strip can effectively clean the space between the buccal tooth surface and the buccal mucosa. The U-shaped silicone strip follows the arc shape of the dentition well, and can perform gentle and comprehensive cleaning of the tooth surface and gingival margin during brushing.
Owner:桑吉嘉
Shell-shaped appliance and appliance set comprising same
The utility model provides a shell-shaped appliance and an appliance set comprising the same, the shell-shaped appliance comprises an appliance body for accommodating teeth, the surface of the appliance body facing the tongue side and / or the cheek side is provided with a protruding part, and the protruding part is matched with an external appliance in shape and is used for being detachably connected with the external appliance; the protruding part comprises a gingival margin end and an extending tail end in the horizontal direction, a first connecting line is arranged between the gingival margin end and the extending tail end, and the included angle between the tangent line of the first connecting line and the horizontal direction is not larger than 80 degrees and not smaller than-20 degrees. According to the orthodontic appliance, the orthodontic appliance body can be conveniently and detachably connected with the external appliance through the convex part, so that when one of the orthodontic appliance body and the external appliance is damaged, the orthodontic appliance can be normally used only by replacing the damaged orthodontic appliance body or the damaged external appliance, and the use cost is reduced. In addition, by adopting the structural form, the connection between the external instrument and the appliance body is facilitated, and the external instrument is prevented from being separated from the appliance body.
Owner:WUXI EA MEDICAL INSTR TECH
Integrated manufacturing method of abutment crown
The invention relates to the technical field of oral rehabilitation, in particular to an abutment crown integrated manufacturing method which comprises the following steps: acquiring intraoral scanning data and cone beam CT data, performing registration to obtain a unified patient coordinate system, and calculating a target soft tissue curved surface and a tolerance parameter set based on an alveolar ridge form, mucous membrane thickness and an implant attitude; solving an abutment main body, a crown body and a plastic neck section at the same time under the same coordinate system, dividing plastic neck section patches, and setting a propelling direction, an allowable propelling amount and a limiting groove for each patch; an integrated main body piece with a limiting groove and a plastic neck sleeve are machined, and propelling information is marked; after installation, the face sheet is shaped or retreated in a staged and directional upheaval mode according to marks, so that the gingival margin and the gingival papilla are gradually shaped, a neck margin closed contact band is established, and controllable individualized soft tissue shaping is achieved.
Owner:CHONGQING XINLEMEI MEDICAL TECHNOLOGY CO LTD
Systems and methods for designing and manufacturing an orthodontic appliance
Systems and methods of defining a trimline in relation to modeled teeth including modeled gingiva. The trimline is for use to manufacture an aligner. A margin point is placed proximate a gingival margin at each tooth on at least one jaw in the model. A trimline connects the plurality of margin points from which machine code is generated. The aligner manufactured includes an edge that correlates with the trimline according to the machine code. A margin point may be proximate a gingival zenith. At least one tooth cooperates with the modeled gingiva to define a line around the tooth. The trimline includes at least one tooth curve and at least one connector curve connected to the tooth curve at a transition point. At least one control point is on the trimline between two margin points. The trimline is defined by a spline that may be a Bèzier curve.
Owner:ORMCO CORP
Method and device for designing dental restoration
The present invention relates to a method and device for designing a dental restoration, the method comprising: processing image data related an oral cavity of a surgery subject; determining a gingival margin line of a plurality of teeth of the surgery subject on the basis of the image data; determining a dental axis of the plurality of teeth; measuring a Hausdorff distance between at least one first tooth and at least one second tooth, symmetric to the first tooth, among the plurality of teeth; and determining a degree of coincidence in the three-dimensional shape of the first tooth and the second tooth on the basis of the Hausdorff distance. Other embodiments are also possible.
Owner:AJOU UNIV IND ACADEMIC COOP FOUND