33 results about "Gingival margin" patented technology

The present invention relates to a toothbrush which exhibits superior interproximal and gingival margin cleaning. The toothbrush includes an elongated handle member connected to a toothbrush head member. The head is divided into two regions. A "toe" region is defined as the part of the head which is furthest from the handle and a "heel" region is the portion of the head which is closest to the handle. A multiplicity of bristles extend from the heel region of the head; the distal ends of these bristles form a longitudinally aligned concave shape when viewed on end. Likewise, a multiplicity of bristles extend from the toe region of the head, wherein said bristles extending from the toe portion of the head are at least as tall as the general height of said bristles extending from the heel portion when viewed from the side and wherein the side profile view of the distal ends of the bristles extending from the toe portion form a generally linear surface which forms an angle relative to the general plane of the bristles extending from the heel portion of from 0 DEG to about 45 DEG declining from the edge of the toe portion distal to the heel portion to the edge of the toe portion which is proximal to the heel portion.

An intra-oral appliance in the form of a tongue-airway functional appliance which restores / encourages training of the tongue, which encourages patients to breathe through the nose, and which can serve as a diagnostic aid or test device to access a patient's problems. The appliance includes a body of plastic material having an arcuate-shaped portion along which is defined a recess for receiving teeth of a dental arch of a patient, preferably the upper arch. The appliance further includes a curved platform or extension from the body running from the area of the lingual gingival margin of all teeth inferiorly (toward the mandible) forming a “U” or cup-shaped portion or sling which passes under the tongue laterally and anterior to posterior. In another embodiment, nubs or projections are provided on the walls of the teeth-receiving recess for enhancing retention of the appliance.

A dental matrix is used to support a filler material placed into a tooth in a class II, III or IV restoration. The matrix has a retainer portion of a thin metal sheet stock having a generally concave surface of a size and configuration capable of abutting the tooth. The retainer portion includes a topper marginal ridge area, a central contact area and a lower, convex shaped gingival margin area, the marginal ridge area and the contact area are made thinner than the gingival margin area. The sheet stock is made of a material that may deform during the insertion process, and that will then resume its original shape when in place.

The present invention for the first time discloses a method and a kit of parts for treating a periodontal disease, such as periimplantitis, gingivitis, periodontitis and / or periimplant mucositis, caused by microorganisms that colonize a tooth and / or implant surface at, above and / or below the gingival margin, and which reside in a biofilm either subgingival and / or supragingival, characterized by employing a surgical process leading to substantively removing, destroying, killing and / or disrupting and / or inhibiting growth and / or regrowth of a pathogenic biofilm at a site of a microbial infection in a patient suffering from a periodontal disease. Said method comprises, and said kit of parts comprises the means for; cleaning disinfecting and / or debriding the site of microbial infection mechanically and sequentially using first at least one cleaning and / or disinfecting agent with an immediate bactericidal effect, such as a NaClO solution, and thereafter at least one cleaning and / or disinfecting agent with a sustainable bactericidal effect, such as a CHX solution.

The invention discloses an implant denture individual abutment design method based on a healing abutment dental model, and belongs to the field of computer auxiliary design. The method comprises the following four steps: acquiring and preprocessing data; establishing an implant system model base; positioning a healing abutment and an implant body; and designing an individual abutment. The implant denture individual abutment design method is high in automation, not only ensures that the operation steps of manufacturing a wax pattern or casting a model, and transferring the implant body on clinic and the like can be omitted, but also can be used for improving the shape of gingival margin of the restored implant denture, greatly reducing the operation time and cost of a doctor and a skilled work, and improving the restoration efficiency and beautiful appearance; the implant denture individual abutment design method based on the healing abutment dental model has important application value in a computer auxiliary dental implant field.

A toothbrush is described having a contoured head that is suitable for cleaning teeth with orthodontic brackets. The toothbrush head has a ridge located a direction transverse to the longitudinal axis of the toothbrush. Bristles may be attached to the surface of the contoured head and ridge to extend outwardly therefrom. The bristles target the gingival margin, interproximal areas and the surfaces of the orthodontic bracket base as well as the remaining exposed surfaces of the tooth for cleaning.

The invention provides an invisible appliance which comprises a single-jaw appliance and / or a double-jaw appliance. The single-jaw appliance comprises a maxillary tooth socket and a functional auxiliary part, and the double-jaw appliance comprises a double-jaw tooth socket and a functional auxiliary part. The double-jaw tooth socket comprises an upper jaw tooth socket, a lower jaw tooth socket anda connecting occlusal plate, the functional auxiliary part is selected from at least one of a palatal side plate, a lingual guide wing, an anterior tooth occlusion opening assembly and an extraoral traction assembly, and the anterior tooth occlusion opening assembly comprises a gingival margin bulge and a stress application pad; the extraoral traction assembly comprises an outer side tube and anextra-oral traction bow, and all parts are made of transparent or semi-transparent materials, so that the appliance is invisible. The appliance has a wide clinical application range, is suitable for malocclusion deformity of bone surface type II malocclusion and mild type III and can provide an efficient correction force system in the three-dimensional direction and especially greatly improve thecorrection efficiency in the vertical direction.

In order to overcome the defects of an existing gingival margin curve extraction mode, the present invention discloses a gingival margin curve design method for a personalized implant tooth. The gingival margin curve design method for the personalized implant tooth comprises the following steps of: a step 1 of respectively reconstructing gingival margin profiles of a residual tooth of a patient suffering from tooth missing and a three-dimensional dental model of a sample, extracting feature regions of gingival margin curves according to an obtained maximum principal curvature value, extracting gingival margin feature lines of the residual tooth of the patient suffering from tooth missing and the sample by utilizing a granular computing and cellular automaton combining method, then respectively fitting the gingival margin feature curves of the residual tooth of the patient suffering from tooth missing and the dental model of the sample, and finally, constructing a single gingival margin curve of the residual tooth of the patient suffering from tooth missing and the sample; a step 2 of constructing a gingival margin biological multivariate statistical analysis model of the sample; and a step 3 of designing a personalized gingival margin curve of a missed tooth of the patient. The method disclosed by the present invention aims to improve accuracy and efficiency of designing the implant tooth gingival margin curve, improve the repaired gingival margin profile form of the implant tooth, and improve a repair success rate of the personalized implant tooth.

A video capable electric toothbrush for proper periodontium prophylaxis having a rotating bristle assembly configured to rotate in multiple directions so as to implement a brushing technique having the brush rotate in a direction from the gum towards the tooth by use of a switch, and regardless of the specific tooth or teeth being brushed, the electric toothbrush is configured to brush along the gingival margin towards the tooth crown. The video capability allows a user to see and target brushing along the gingival margin, and recognize areas with high debris quantity requiring additional attention.

A gingival contour probe comprising a shaft portion and an elongated tip portion attached at a proximal end thereof to the shaft portion, the tip portion being non-planarly bent and / or curved and carrying markings, the number and scale of which are indicative of measured lengths; the probe being adapted at least by the number and / or scale of the markings for use in convenient gingival margin measurement of a tooth in a conscious non-human animal. A method for quantifying dental plaque in a conscious non-human animal comprising (a) aligning the tip portion of such a gingival contour probe with a gingival margin of a tooth in the animal; (b) by reference to the markings on the tip portion of the probe, measuring the length of the margin and the length of plaque deposit if any at the margin; and (c) calculating a plaque score for the tooth by comparing the length of plaque deposit with the length of the margin.

A dental matrix comprising a band with an edge for placement toward the gingival margin of a tooth to be restored, and a strip of dental floss attached to and extending along an edge of the band. In the preferred embodiment, buccal and lingual extensions are located beyond a central portion of the band along the edge. The extensions are folded over the strip of dental floss so as to secure the strip of dental floss to the edge.

The invention discloses an in-situ bone taking and grafting indication guide plate in horizontal bone augmentation and a manufacturing method thereof. The technical problems that in the prior art, bone grafting requirements cannot be met during bone taking, the surgical effect is influenced, adjacent important vascular nerves and other anatomical structures are damaged due to inaccurate positioning of bone taking, or surgical risks are increased due to additional trauma caused by excessive bone taking are solved. The indication guide plate comprises a base plate, a bone shell obtaining guide plate and a bone shell placing guide plate. The manufacturing method mainly comprises the steps that stl data are obtained through oral scanning before an operation, CBCT is shot to obtain Dicom data,the two data are registered and fused to carry out ideal dental crown three-dimensional position design to obtain an ideal gingival margin position of a tooth loss area, ideal implant position designis carried out with repair as guidance, therefore horizontal bone augmentation final outer surface design is guided, and the base plate, the bone shell obtaining guide plate and the bone shell placingguide plate are designed. The three-dimensional positions of bone taking and bone grafting sites are accurately indicated, surgical wounds are reduced, surgical risks are reduced, the surgical time is shortened, complications such as damage to tooth roots of adjacent teeth are avoided, and the surgical efficiency is improved.

The invention provides a design method of an orthodontic brace. The design method of the orthodontic brace comprises the following steps: acquiring an initial digital dental model; designing a digitalupper palatal arch model with characteristic information; and generating a digital dental model with the digital upper palatal arch model, and designing the orthodontic brace. The characteristic information comprises size information of the digital upper palatal arch model and preset position information, and the preset position information of an upper palatal arch is that two ends of the upper palatal arch are arranged in positions of lingual gingiva margins in a backteeth area of the initial digital dental model or positions, close to the gingival margins, on lingual sides in the backteetharea of the initial digital dental model so that when the orthodontic brace acts on teeth, the upper palatal arch can induce buccolingual lateral amplification of maxillary palatal suture bone deposition through deformation, and the teeth in the backteeth area conduct buccolingual lateral movements under the action of the orthodontic brace. A production method of the orthodontic brace is further provided.

In order to overcome the defects of an existing gingival margin curve extraction mode, the present invention discloses a gingival margin curve design method for a personalized implant tooth. The gingival margin curve design method for the personalized implant tooth comprises the following steps of: a step 1 of respectively reconstructing gingival margin profiles of a residual tooth of a patient suffering from tooth missing and a three-dimensional dental model of a sample, extracting feature regions of gingival margin curves according to an obtained maximum principal curvature value, extracting gingival margin feature lines of the residual tooth of the patient suffering from tooth missing and the sample by utilizing a granular computing and cellular automaton combining method, then respectively fitting the gingival margin feature curves of the residual tooth of the patient suffering from tooth missing and the dental model of the sample, and finally, constructing a single gingival margin curve of the residual tooth of the patient suffering from tooth missing and the sample; a step 2 of constructing a gingival margin biological multivariate statistical analysis model of the sample; and a step 3 of designing a personalized gingival margin curve of a missed tooth of the patient. The method disclosed by the present invention aims to improve accuracy and efficiency of designing the implant tooth gingival margin curve, improve the repaired gingival margin profile form of the implant tooth, and improve a repair success rate of the personalized implant tooth.

The invention relates to a fluoride coating device for preventing dental caries in children and a manufacturing method thereof. The fluoride coating device comprises a top-bottom split type U-shaped brace, wherein the U-shaped brace comprises a shell; a tooth socket is arranged on the shell; a lip front wall is arranged on the front side of the tooth socket; a tongue side wall is arranged on the rear side of the tooth socket; the margin part of the tooth socket is completely in fit with the gingival margin; a gap between the other spaces in the tooth socket and the teeth is reserved to form an enclosed space; a flow guiding groove is formed in the tooth socket; a fluoride inlet is formed in the middle of the U-shaped brace; fluoride outlets are formed in the two end parts of the U-shaped brace; the fluoride inlet is communicated with the flow guiding groove; the fluoride outlets are communicated with the tooth socket. According to the device disclosed by the invention, fluoride coating on the teeth of the children are uniformly carried out, the harm to the health of the children can be prevented due to excessive using amount of fluoride, and the using amount of the fluoride can be reduced, so that the cost is reduced, and the waste of unnecessary using amount of the fluoride is reduced; moreover, a fluoride protective layer can be isolated from other parts of an oral cavity, so that the harm to the health of the children because of dropping of the fluoride protective layer caused by factors such as low self-discipline or saliva of the children is prevented; the fluoride coating device is simple to wear, is time-saving and labor-saving, and easy to promote.

An electric toothbrush for proper periodontium prophylaxis having a rotating bristle assembly configured to rotate in multiple directions so as to implement a brushing technique having the brush rotate in a direction from the gum towards the tooth by use of a switch, and regardless of the specific tooth or teeth being brushed, the electric toothbrush is configured to brush along the gingival margin towards the tooth crown.

The invention provides a rapid tooth segmentation method based on a three-dimensional dental model. The method comprises the following steps: S1, carrying out data preprocessing on an input three-dimensional dental model; S2, re-modeling the shape on the three-dimensional dental model; s3, determining grid maximum path search based on an Astar algorithm; and S4, identifying gingival margin line and fusion region features by using a convolutional neural network, and separating out a single tooth. According to the segmentation method, each tooth can be rapidly and accurately segmented, and a better reference value is provided for doctors for subsequent denture repair.

The invention is a new method for predicting when subjects having chronic periodontitis will fail or succeed conventional standard therapy. The method uses measures of the plaque cadaverine fraction with additional measurements including age, fraction of gingival margins that bleed on probing (BOP), and clinical attachment level (CAL in mm) to calculate discriminant function equations for calculating individual score sets. When CF is above 0.45 in periodontitis patients, it is predicted that most available therapies with which the periodontitis patient can be treated will fail, including a conventional standard treatment or an aggressive combined antibiotic / oral hygiene therapy.

The invention discloses a teeth tapping device. The teeth tapping device comprises an upper dental cast and a lower dental cast which correspond to the teeth on the upper part and the lower part of the oral cavity, and a vibration assembly, wherein both the upper dental cast and the lower dental cast are U-shaped, the upper surface of the vibration assembly is fixedly connected to the upper dental cast in a detachable manner, the lower surface of the vibration assembly is fixedly connected to the lower dental cast in a detachable manner, and tooth grooves corresponding to the teeth of a user are formed in the side faces of the upper dental cast and the lower dental cast. By using the teeth tapping device disclosed by the invention, all the teeth can be subjected to uniform passive tapping action. The invention further discloses a teeth securing method using the teeth tapping device. A gingival nutrient solution is injected into the oral cavity while the teeth tapping device is used, while the teeth are subjected to passive tapping through vibration, the gingival margin is loosened to form a gap, then the gingival nutrient solution permeates into the gingival margin, the periodontal small pockets and the periradicular part from the gingival gap through the powerful independent gargling action, then the effects of resisting allergy, diminishing inflammation and nourishing the periodontal part are achieved, and in combination with passive teeth tapping, the purposes of strengthening the periodontal part and securing the teeth are achieved.

The invention discloses a position and configuration parameter measuring method of a digital denture. The method comprises the following steps: introducing a denture model; adjusting a coordinate system of the denture model, so that a coordinate direction dir of the denture model, wherein the coordinate direction dir satisfies the following relations that an z axle is parallel to the direction ofa long axis, an x axle is parallel to a far-middle-near direction, a y axle is parallel to a buccolingual or labiolingual direction, and the directions of the x axle, the y axle and the z axle conforms to a right-hand rule; in accordance with the coordinate direction dir, recognizing five appearance high points of a denture within an h height range in a mode of calculating coordinate extreme values, wherein the h is a preset height threshold and the h is used for predicting a distance from a dental cusp to a gingival margin; and in accordance with the five appearance high points of the denture, calculating two appearance dimensions and three datum planes. According to the method provided by the invent, by adding the height threshold h, the method not only has the property of being strong in operability but also guarantees the reliability of a recognition result; the method, which calculates the two appearance dimensions and the three datum planes in accordance with the five appearancehigh points of the denture, is more convenient. The method provided by the invention can be widely applied to the denture repair field.

The invention relates to a stent depressing a second molar by using an implant anchorage. The invention belongs to the technical field of medical instruments in the orthodontic aspect. The stent provided by the invention comprises a first molar band ring (1) and traction hooks (3). The stent is characterized in that a pair of horizontal rods (2) parallel to gingival margin is provided on a distal direction of the first molar band ring (1) corresponding to cheek and tongue sides of an adjacent second molar; a pair of traction hooks (3) is respectively provided on each of the horizontal rods (2) at proximal and distal shaft angle positions of the second molar; a palatal connection body (4) close to an adjacent second premolar is provided on the first molar band ring (1) on the palatal side in the proximal direction; a buccal connection body (5) close to the adjacent second premolar and a positioning frame (6) are provided as a buccal side of the first molar band ring (1), wherein the positioning frame (6) matches an implant anchorage pin implanted on an apical alveolar bone on the buccal side between the first molar and the second premolar.

The invention relates to a toothbrush head and a use principle thereof. The toothbrush head comprises a body and a brush part arranged at the end of the body, the brush part comprises a plurality of first bristle clusters and a plurality of second bristle clusters, the first bristle clusters are arranged in a U shape to form a U-shaped bristle cluster group, and the plurality of second bristle clusters are arranged in the U-shaped bristle cluster group and are arranged along the direction of a brush handle to form a linear bristle cluster group; the height of the first bristle clusters is greater than that of the second bristle clusters; the upper side of the U-shaped bristle cluster group and the linear bristle cluster group achieve the positioning and supporting of the brush part respectively, so that the moving direction of the brush part is effectively limited, the brush part cannot move longitudinally during transverse tooth brushing, and the brush part is perfectly matched with key essentials required in the Babbitt's tooth brushing method. Therefore, the use of the toothbrush head is convenient and labor-saving, the cleaning effect on the surface of the whole dental crown and the whole slit between teeth is greatly improved, the cleaning range is expanded, and meanwhile, gingival sulcus and gingival margin can be effectively and accurately cleaned.

The invention discloses a grating-shaped anterior tooth preparation observation plate and a digital preparation method thereof, and belongs to the technical field of digital preparation. According to the method, the inner side face of the tooth preparation indicating plate serves as a reference face, the space formed by the reference face and the prepared preparation face is in uniform transition from the gingival margin to the incisal margin, the grating facilitates multi-point observation, the personalized thickness of the indicating plate can help doctors to better evaluate the tooth preparation amount, and the requirements of tooth preparation and restoration manufacturing can be met. According to the tooth preparation observation plate, the problem that the tooth grinding amount is not easy to judge in clinic can be solved to a certain extent, visual observation is carried out through the grating with the thickness being 1 mm or personalized thickness, and the tooth preparation amount can be accurately evaluated under the direct vision condition.