163 results about "Anterior tooth" patented technology

An intraoral mandibular advancement device to treat sleep disorders in a user having an obstructed airway includes a maxillary appliance with a main body for removable attachment to the maxillary teeth; a protrusive element distending from the central portion of the main body; and retention means extending from the main body for retention of the device on the maxillary teeth during sleep. A mandibular appliance removably attaches to the mandibular anterior teeth and includes a lingual spacer that extends posteriorly from the mandibular anterior teeth. The anterior aspect of the protrusive element of the maxillary appliance contacts the posterior edge of the lingual space and thereby causes mandibular advancement.

A method and a device for effecting the cordless retraction of the gingival sulcus tissue prior to the taking of an impression of a tooth for making a crown or bridge which is attained by controlling any bleeding in the gingival sulcus area, and utilizing a dental dam preferably formed of a sponge or foam like material to contain an astringent fortified silicone impression material embedded about the prepared tooth, and using the patient's biting force to apply the necessary pressure onto the dam until the silicone impression material sets and adheres to the dam to enhance easy removal of the set impression material from the tooth. The dam is formed to accommodate either the posterior teeth or the anterior teeth.

An intraoral mandibular advancement device to treat sleep disorders in a user having an obstructed airway includes a maxillary appliance with a main body for removable attachment to the maxillary teeth; a protrusive element distending from the central portion of the main body; and retention means extending from the main body for retention of the device on the maxillary teeth during sleep. A mandibular appliance removably attaches to the mandibular anterior teeth and includes a lingual spacer that extends posteriorly from the mandibular anterior teeth. The anterior aspect of the protrusive element of the maxillary appliance contacts the posterior edge of the lingual space and thereby causes mandibular advancement.

A system, apparatus, device, tools and method is provided for the insertion of improved anatomically corrected modular design anterior and posterior dental implants, the apparatus including a root component and a head / abutment component, wherein the root component is inserted into the jawbone using precision surgical guide tools in combination with self-limiting surgical templates and a precision adjustable clamping device.

The present invention relates to a method for changing translucency of zirconia dental materials through applying an yttrium or ytterbium salt solution onto a pre-sintered zirconia material by dipping or brush-coating. Accordingly, the need of young patient in relation to the translucent requirement for incisal portion of anterior teeth is met in which the translucent level from the crown neck to the incisal portion is gradually changed in a natural manner, similar to natural teeth. A color gradient effect of the crown is produced through dipping in or brush-coating with yttrium or ytterbium salt solution. Moreover, the present invention involves simple operating steps and low cost while providing high consistency in quality.

The invention relates to an oral material, in particular to a light transmission gradually changed zirconium oxide material for dental surgery and a preparation process thereof, the light transmission gradually changed zirconium oxide material is an oral material of a zirconium oxide porcelain block used for repairing porcelain tooth in dental surgery and is prepared from following two raw materials of 3Y-TZP and (4-6) Y-PSZ according to a mass ratio of 4: 1 to 2: 1. In the invention, the requirements of anterior teeth cutting end of a young patient on light transmission of the light transmission gradually changed zirconium oxide material can be satisfied. Moreover, after processing into dental corona, porcelain is not required to be applied, therefore, a porcelain fracture phenomenon caused by different expansion coefficients between zirconium oxide and decorative porcelain can be avoided. Meanwhile, the preparation method is simple, the cost is low and the quality is stable.

An orthodontic accessory arch bar for orthodontic therapy which is adapted for attachment to the buccal surface of a fixed orthodontic appliance. The accessory arch bar is comprised of wires heavier than orthodontic arch wires which gives the accessory arch bar greater control over the width and form of the dental arch. The orthodontic accessory wire may be configured to widen or narrow the dental arch, coordinate the bite, precisely shape the dental arch, open or close the anterior bite, and correct a cant of the anterior occlusal plane.

The present invention relates to a method for changing translucency of zirconia dental materials through applying an yttrium or ytterbium salt solution onto a pre-sintered zirconia material by dipping or brush-coating. Accordingly, the need of young patient in relation to the translucent requirement for incisal portion of anterior teeth is met in which the translucent level from the crown neck to the incisal portion is gradually changed in a natural manner, similar to natural teeth. A color gradient effect of the crown is produced through dipping in or brush-coating with yttrium or ytterbium salt solution. Moreover, the present invention involves simple operating steps and low cost while providing high consistency in quality.

Disclosed herein is an apparatus for correcting the position of teeth used in dentistry. The apparatus for correcting the position of teeth is constructed in a structure in which an implantation unit is securely fixed to a palate, e.g., the roof of a mouth, the bony tissue of which is very excellent and the soft tissue thickness of which is small, using a fixing source, opposite suspension parts are suspended by opposite buccal molar areas to draw front teeth backward, whereby the movement of teeth at the molar tooth areas is prevented, and therefore, reimplantation is unnecessary, application points for drawing the front teeth, including the molar teeth, backward are located at the buccal molar areas, whereby the application of a force (a correction force) is easy, it is possible to induce natural extension of a dental arch (an arch-shaped area where teeth are implanted), and the teeth are moved backward to correct the irregularities of teeth, whereby it is possible to considerably reduce a possibility of tooth extraction.

The invention relates to whitening strips. The whitening strips comprise water-insoluble film layers, whitening layers and adhering-resistant lining layers, wherein the whitening layers include whitening agents, gels and water; and the gel is one or more of veegum, natural gum and polyvinylpyrrolidone. The whitening strips are conveniently adhered on the surfaces of the anterior teeth and a trough between every two teeth, can quickly release the whitening agents and protect the soft tissues such as gum and lips, and are conveniently taken out after use without hurt to the soft tissues in the mouth. The white strips are convenient, safe, efficient, and quick in acting during use. In the prior art, hydrogen peroxide which is beneficial for whitening the teeth bring extreme discomfort to the soft tissues in the mouth due to the concentration, and if the concentration of the hydrogen peroxide is reduced, the using time needs to be prolonged, and the problem is effectively solved by the whitening strips by adding the gels.

A mouth guard designed to minimize discomfort and speech interference associated with conventional mouthpieces is disclosed. The mouth guard has a substantially uniform thickness on the facial / buccal and biting surfaces of the anterior and posterior teeth, and along the lingual surface of the posterior teeth. The thickness of the mouth guard along the lingual surface of the anterior teeth is greater near the biting surface than near the gum line. This minimizes interference with the wearer's tongue, making it relatively easy to drink, speak, and breathe, while protecting the anterior and posterior teeth from impact from the front or underneath. The mouth guard can be a boil-and-bite or custom-made mouth guard, and can also include an impact shield, one or more power wedges or shock absorbers, a flavoring component, and / or an antibacterial component.

A dental implant includes a body and a threaded surface. The body has an upper portion, a middle portion, and a lower portion. The upper portion of the body includes a generally cylindrical region. The lower portion of the body includes a generally inwardly tapered region. The middle portion of the body includes an outwardly extending bulge. A maximum outer diameter of the bulge is greater than (i) a maximum outer diameter of the upper portion and (ii) a maximum outer diameter of the lower portion. The threaded surface is on the body within at least the upper portion of the body, the bulge, and the lower portion of the body.

Described is an orthodontic aligner implement that can ensure the accuracy and efficiency of clear aligner orthodontic therapies as well as increase patient compliance by reducing discomfort and combining functionality into a breath-freshening medium. The implement includes a consumable mass having at least two channels disposed on opposite sides of the mass and traversing the width of the mass. The channels are adapted to seat between opposing anterior or incisor teeth. Also described is a method of positioning an orthodontic aligner into a prescribed position that includes placing the aligner approximately in the prescribed position in one's mouth, placing the aligner implement described above into the mouth, and applying the implement in contact with the aligner in one's mouth.

An unimpeded distalizing jig, comprising a pair of tooth bond pads, an intra dental arch telescoping assembly, comprising a rod-like insertion and a tubular shell, which constrains the rod-like insertion to move with respect to the tubular shell along an elongated axis, which may be a radial path; and a force generating structure configured to supply an off-axis distalizing force to the intra dental arch telescoping assembly, such that the distalizing force is provided to the posterior tooth substantially without applying an anteriorizing force on the anterior tooth. The force generating structure may be an elastic band fixed by a hook to the tubular shell on one side, and to a molar on an opposing dental arch on the other side.

The invention provides a full-process digital manufacturing method of complete dentures. The full-process digital manufacturing method comprises the following steps: acquiring an STL file of three-dimensional data by intraoral scanning of a patient with complete edentulous jaw; putting the median occlusal tray into the mouth, recording the morphology of the mucous membrane surface of the upper jawand the lower jaw and the relative position relation of the upper jaw to the lower jaw, obtaining an STL file of three-dimensional data of the median occlusal tray by scanning; and obtaining a DICOMfile about spiral CT or CBCT of the edentulous jaw patient wearing the median occlusal tray. The full-process digital manufacturing method of the present invention has the advantages as follows: 1, athree-dimensional space about maxillofacial region of the patient is constructed by fitting four digital files, and the occlusal plane in which the patient tries on the dentures and morphology and position of the anterior teeth are set with reference of the anatomical structure of the maxillofacial region of the patient, thereby improving the try-on effect of the dentures; 2, a final impression scanning and copying technology is utilized to accurately manufacture the morphology of a final denture base; and 3, a base plate and a artificial dentition are obtained by adhering the separately cut resin discs with different colors and high strength through adhesive, thereby achieving high cutting precision, high strength of the resin discs and good wear resistance of the artificial teeth.

The invention provides an expansion type muscular activator for correcting class-II malocclusion. The muscular activator comprises a denture, and is characterized in that the denture is formed by a left denture and a right denture, and comprises an upper anterior tooth plastic cap and a lower anterior tooth plastic cap which are worn in the anterior tooth region, a palate denture, a vertical wing plate and an interocclusal part, wherein the palate denture is positioned at the oral palatal shelf part and the vertical wing plate is positioned on the tongue side of the lower dentition when the activator is worn; the interocclusal part is positioned between the backteeth occlusal surfaces of the upper jaw and the lower jaw; and the distal of the denture reaches the distal of the first molar of the upper jaw and the distal of the first molar of the under jaw. The expansion type muscular activator also comprises a screw and two draw hooks, the left denture and the right denture are connected by virtue of the screw; and the draw hooks correspond with mesial of canine teeth on two sides of the upper jaw. The expansion type muscular activator is reasonable in design, low in cost and convenient to wear, and is suitable for patients with early class-II high-angle malocclusion, especially cases of incompetent lips.

The invention provides a digitalized small-size stacked high-retention dental implant operation guide plate and a manufacturing method of the digitalized small-size stacked high-retention dental implant operation guide plate. The method comprises the following steps: acquiring preoperative oral cavity CBCT data of a patient, and reconstructing a model I; acquiring optical scanning data of the surfaces of preoperative teeth and gingiva of a patient, and reconstructing a model II; fitting the model I and the model II, and designing a three-dimensional position of the implant in the tooth-missing area; copying the model II, and generating a model III according to the guide plate in-place channel direction; selecting the surface after undercut filling corresponding to the dentition cheek and the lingual surface in the model III as a surface I; according to the boundary of the surface I, extracting a surface II on the model II; combining the surface I and the surface II to generate a lining model; combining the lining model with the model II to generate an outer sleeve main body model of the guide plate; and finally, carrying out machine shaping. By adopting the scheme, retention can be realized by fully utilizing the undercut of the supporting teeth, so that the stability of the guide plate can be guaranteed while the dentition coverage range of the guide plate is reduced, and the precision and safety of the guide plate for guiding an implantation operation are further improved.

The invention discloses an orthodontic appliance design method, a preparation method, and an orthodontic system. The orthodontic appliance design method comprises the following steps: acquiring a digital dental model which comprises a digital dental model body and a digital palate part; designing an orthodontic appliance main body which is at least provided with one tooth in a posterior tooth areato move towards a distal direction based on the digital dental model, wherein the orthodontic appliance main body comprises a shell-shaped orthodontic appliance main body and an auxiliary part main body; arranging an auxiliary anchorage part, wherein the auxiliary anchorage part is arranged on the auxiliary part main body which can absorb counter-acting force generated by the tooth on the rear tooth area of the shell-shaped orthodontic appliance main body when the tooth moves towards the distal direction; arranging an auxiliary conduction part which is used for assisting in conducting the counter-acting force generated when at least one tooth in the rear tooth area moves towards the distal direction. The orthodontic appliance obtained by the design method can prevent the teeth in the anterior tooth area from inclining towards the lip side.

A retainer for straightening and / or for maintaining the front teeth positioning achieved during orthodontic therapy, having at least two connection pieces for fastening the retainer on one tooth in each case and having a connection wire for establishing a connection among the teeth and / or for forming a constraint to restrict the movement capabilities of the connected teeth. In order to be able to prevent compensation reactions by the body, the connection wire is movably mounted in at least one of the connection pieces.

A removable orthodontic device includes an anchorage cap segment, a moving cap segment, a pair of spring elements, and a guiding wire. The anchorage cap segment is removably worn on the anterior teeth of a dental arch. The moving cap segment is removably worn on at least one posterior tooth on one side of the dental arch. The spring elements are disposed between the anchorage and moving cap segments to generate an elastic resilient force to move the moving cap segment relative to the anchorage cap segment. The guiding wire has a U-shaped portion and two rod portions. The U-shaped portion is embedded in and disposed around three sidewalls of the moving cap segment, and the rod portions are received in guiding channels formed in the buccal and lingual sidewalls of the anchorage cap segment to guide the movement of the moving cap segment.

The invention relates to an adjusting guide making method. The method comprises following steps: an upper jaw 3D model and a lower jaw 3D model of a patient are obtained with a 3D scanning technology,and a 3D position relation of upper jaw dentition and lower jaw dentition of the patient in different states is obtained; an occlusion contact relation of the patient in different states is obtainedon the basis of the 3D position relation; lower jaw positions of the patient in different states are gathered in 3D software, a repair form of upper jaw anterior teeth is designed based on this, and adiagnostic model is formed; an ideal repair effect of the upper anterior teeth of the patient and a position relation of the upper anterior teeth and the lower jaw dentition in different states are obtained through 3D design on the basis of the 3D model; occlusal interference is avoided by adjusting incisal form of lower jaw anterior teeth, and an adjusting guide is designed by the 3D software onthe basis of the adjusted incisal form of lower jaw anterior teeth; and the diagnostic model and the adjusting guide are obtained through 3D printing. The adjusting guide made with the method can rapidly and accurately adjust and grind dental tissue.

The invention discloses a positioning guide plate for removing unerupted supernumerary teeth in an anterior tooth area, and a manufacturing method thereof. A mucous membrane positioning guide plate and a boning positioning piece are detachably arranged, and can be conveniently used in a matching manner, a positioning ring for guiding the route of a boning device is arranged on the inner side surface of the boning positioning piece, the inner side surface of the positioning ring is a boning guide surface, and the boning guide surface is provided with a preset boning direction and the height ofthe positioning ring for guiding the boning depth of a machine needle. By means of the device, accurate incision positioning can be conducted on the unerupted supernumerary teeth, meanwhile, through the design of the positioning guide plate, the deboning area, depth and angle are accurately guided, incision and deboning are conducted in a small range, it is avoided that important permanent teeth and normal teeth are damaged due to positioning errors, and the supernumerary teeth are smoothly exposed.

The invention discloses a rat mouth gag which comprises a base, a forward mouth gag, a lateral mouth gag and a rat fixing plate. The base is a rectangular groove body, the opener bases are symmetrically arranged on the left side and the right side of the top surface of the base, and the opener bases are also symmetrically arranged on the upper side and the lower side of the top surface of the base; the forward mouth opener and the lateral mouth opener are mounted on mouth opener bases on the upper side and the lower side of the base, one end of the forward mouth opener and one end of the lateral mouth opener penetrate through the through hole I, and the other end of the forward mouth opener and the other end of the lateral mouth opener are mounted in the through hole II through a rotating shaft I; the rat fixing plate is obliquely arranged in the middle of the base, the chest fixing belt and the leg fixing belt are arranged on the top face, the supporting rod is arranged on the bottom face, one end of the supporting rod is connected with the rat fixing plate, and the other end of the supporting rod is connected with the base. According to the rat mouth gag, on one hand, anterior teeth, posterior teeth, upper jaw and lower jaw of a rat can be opened in four directions at the same time, the opening distance in each direction can be independently adjusted, and on the other hand, the position of the rat and the positioning of the mouth gag can be achieved.

The invention discloses a manufacturing method and a using method of a front tooth occlussion blocker based on 3D printing, and relates to a preparation guiding piece of at least one tooth used for dental restoration preparation. The manufacturing method of the front tooth occlussion blocker based on 3D printing comprises the following steps: (1) obtaining a digital model; (2) constructing an occlussion guiding plate; (3) positioning the occlussion guiding plate; (4) adjusting and amending a rudimentary model to obtain an overall model after fine virtual adjustment; (5) carrying out 3D printing, and carrying out subsequent processing according to requirements after the printing is completed. According to the scheme provided in the invention, the blocker does not need to be manufactured directly in the mouth of a patient, solidified self-curing resin does not need to consume much time to be worn into a plane, the operation is simple, the method is easy to grasp, and the materials are saved; occlussion opening distance is accurately controlled in the design process, the phenomena that the separation distance of teeth is too large and the condyle is free of a centric relation are avoided, the lower jaw can freely slide into the centric relation, and repeated adjustment is not needed.

The invention discloses an invisible correction method for treating class 2 and class 3 malocclusion by using an occlusion repositioning device, which comprises the following steps: respectively fixing the occlusion repositioning device on the mandibular or maxillary posterior tooth area on both sides, taking a maxillary and mandibular full-mouth model, filling a plaster model, scanning, transmitting an obtained STL file to invisible correction design software, performing multi-step invisible correction design, finally forming an STL design file, outputting the STL design file to a 3D printer to print a female mold, and pressing a transparent high polymer material on the female mold to form the bracket-free invisible corrector. The design process of the invention comprises the following steps: firstly, fixing an occlusion repositioning device to a back tooth area, connecting the back tooth area as a whole, not designing movement, only correcting an anterior tooth area, correcting the back tooth area, and finally finely adjusting the positions of upper and lower jaw teeth, thereby finishing orthodontic treatment of class 2 and class 3 malocclusion.

The invention relates to a dental implantation method, and particularly relates to an anterior tooth minimally invasive windowing oral implantation method. The anterior tooth minimally invasive windowing oral implantation method is characterized by transversely cutting at an implantation site along the alveolar ridge crest or removing gum at the alveolar ridge crest with a gum ring cutter to form a transverse incision A, then making a transverse incision B along a buccal and labial vestibular groove bottom in an implantation area, and hiddenly dissecting mucoperiosteum from the transverse incision A to the transverse incision B by using a periosteum elevator to make the incisions A and B through. The anterior tooth minimally invasive windowing oral implantation method disclosed by the invention guarantees the minimally invasive implanting of an implant body as well as minimally invasive bone grafting, and ensures sufficient bone support around the implant body; the method disclosed by the invention has the advantages of reduction of longitudinal incisions of gum, small operative trauma, small postoperative swelling, little infection probability, short operation time, no longitudinal dislocation of gum during suturing, good gum healing morphology, good repair aesthetic effect and the like.

The invention relates to an all-ceramic tooth preparation method based on a facial and oral dentition three-dimensional scanning technology. The method comprises the following steps: carrying out spatial three-dimensional registration on facial three-dimensional data and dentition three-dimensional data of a patient through a plurality of feature points on the surfaces of teeth and gingiva of thepatient; designing a lip surface three-dimensional form of the upper anterior teeth and / or the lower anterior teeth to enable the tooth protrusion and the incisor curve to accord with the upper lip shape and the lower lip shape of the patient; copying the three-dimensional shapes of the tongue surface of the original upper anterior tooth and the incisor end of the lower anterior tooth of the patient, and adjusting the three-dimensional shapes so that the forward extension and lateral movement tracks of the lower anterior tooth of the patient accord with the leading characteristics of the patient before repair to obtain a lingual three-dimensional shape; performing data fusion on the lip surface three-dimensional form and the lingual side three-dimensional form to form a three-dimensional digital model with an expected repair effect; and performing three-dimensional printing based on the three-dimensional digital model with the expected repair effect to obtain a resin model, and preparing the all-ceramic tooth according to the obtained resin model. Real three-dimensional aesthetic design can be carried out for the patient.

The invention discloses a concealed correcting appliance for externally-expanded dental arch of an anterior tooth area. The concealed correcting appliance comprises a tooth arrangement socket, a base,a lip side surface and a tongue side surface. The concealed correcting appliance has the beneficial effects that a certain difference is formed between the lip side surface as well as the tongue sidesurface and the dislocated teeth and jaw; after the correcting appliance is deformed, a force for moving the teeth to the direction of the applied displacement load is produced, then the teeth are certainly moved, and finally the dislocated teeth are corrected; the thickness of the tongue side surface is greater than the thickness of the lip side surface, and the thickness of the concealed correcting appliance is controllable, so that when the force for the deformation of the correcting appliance is larger, the force of the externally-expanded dental arch is greater than the counteraction force, and the teeth are externally expanded and moved; in step A, the teeth and jaw in a mouth are scanned in a three-dimensional way so as to build a three-dimensional digital model, the comprehensivestereo tooth and jaw shapes can be obtained, and a gypsum tooth cast can be converted into an operable digital model; in step C, a resin tooth model is manufactured by a 3D printing technique, so as to quickly, accurately and conveniently convert; the concealed correcting appliance is suitable for being popularized and applied.