422 results about "Dentition" patented technology

The invention discloses a data processing method and system for a dental three-dimensional model, and relates to the technical field of dental three-dimensional modeling, and the method comprises the steps: obtaining initial data of oral cavity scanning, recognizing a tooth type in the initial data, and determining a corresponding tooth surface reflection parameter according to the tooth type; generating scanning parameter combinations for different tooth positions according to the tooth surface reflection parameters and the tooth anatomical structure; tooth point cloud data are collected, and a tooth enamel reflective area and a shadow shielding area are identified; performing light reflection removal processing on the enamel light reflection area, performing data completion on the shadow shielding area, and generating corrected tooth point cloud data; and performing registration fusion on the corrected tooth point cloud data to generate a dental three-dimensional model containing a complete dentition. According to the method, the problem of data missing caused by enamel light reflection and adjacent tooth shielding is solved through a differential scanning strategy and regional data processing aiming at specific optical characteristics of teeth, and automatic construction of a high-quality dental three-dimensional model is realized.

The invention relates to the technical field of orthodontic abnormality diagnosis, in particular to an orthodontic abnormality diagnosis intelligent prompt system based on deep learning, which comprises a multi-modal data acquisition module used for transmitting a patient ID (Identity) through an API (Application Program Interface), automatically importing image data, image data, facial three-dimensional data and dentition three-dimensional data of a patient, and transmitting the image data to the multi-modal data acquisition module; meanwhile, medical record text information is obtained in real time through an EMR interface; according to the method, collected data are diversified in form and comprehensive in content, anatomical structure information is provided for patient photos, skull side position X-rays, CBCT, 3dMD, IOS, medical record reports, image data, image data, three-dimensional data and the like, symptom description and medical history are supplemented through text data, multi-person data fusion is achieved, potential association which is difficult to discover through single-mode data can be captured, facial features of a patient are comprehensively evaluated, and the method is suitable for clinical application. The comprehensiveness and the accuracy of diagnosis are improved, more abundant diagnosis basis can be provided for complex mismatching deformity and multi-modal data fusion, and missed diagnosis and misdiagnosis are reduced.

The invention belongs to the technical field of stomatology, and particularly relates to an upper jaw fixing expansion appliance which comprises a spiral expansion device, a plastic base, a connecting rod, a retention device and a dental retraction traction hook. The spiral expander is positioned in the center of the appliance, and the plastic base plate is two parts which are separated from each other in the center and connected with the spiral expander and covers the hard palate part of the upper jaw. The retention device is composed of a milk molar or premolar casting continuous belt ring and a first molar independent casting belt ring. And the left and right dental retraction traction hooks are positioned in the plastic base and are used for retracting and pressing the first molar of the upper jaw of buccal inclination after the expansion of the arch. The appliance disclosed by the invention is wide in clinical application range, and is suitable for light and moderate teenager patients with lateral maxillary development insufficiency and maxillary posterior tooth buccal inclination compensation. According to the invention, a good bony expansion effect can be realized for patients in a replacement dentition stage or a permanent dentition early stage and patients in rapid maxillary expansion, and excessive buccal inclination and movement of teeth are reduced.

Systems and methods are described for generating accurate predictions of the post-treatment anatomy of a patient. The methods involve receiving one or more oral care arguments that describe the desired output from a trained machine learning model. One or more noisy representations of the patient's face and / or post-treatment dentition can be used to train a denoising diffusion probabilistic model. In deployment, an initially noisy image can be denoised, with conditioning on latent representations of the patient's pre-treatment photo and the post- restoration dentition. The methods may generate a digital representation of the patient's post-treatment appearance. These systems and methods enable improved predictive accuracy and enable treatment planning for orthodontics and dental restorative treatments.

The invention belongs to the technical field of three-dimensional point cloud processing, and particularly discloses an automatic tooth segmentation method and system for oral cavity scanning point clouds, and the method comprises the following steps: collecting and preprocessing dentition three-dimensional point clouds, extracting point cloud features containing coordinates and normal directions, and constructing a neighborhood structure; setting a first-stage multi-branch network, and performing tooth and gingiva coarse segmentation and instance initial clustering on the point cloud; setting a second-stage semantic refinement network, and carrying out local cutting on the original point cloud; setting a boundary detection and boundary offset network to enhance a tooth contact area, and refining a boundary instance by clustering to obtain a boundary enhanced instance tag; and performing label fusion, and propagating the fused label to the original high-resolution point cloud through a nearest neighbor algorithm to obtain a final semantic label and a final instance label. By adopting the technical scheme, high-precision instance-level segmentation of the complete dentition point cloud is realized through semantic segmentation, boundary detection and clustering cooperative work based on a biased field.

A method includes determining, by a processing device, a plurality of treatment providers for providing a dental treatment to a user and providing identification of the plurality to a first user device. The method further includes receiving image data of dentition of the user from the first user device. The method further includes receiving a user selection of a first treatment provider and a second treatment provider. The method further includes providing the image data to a second and third device associated with the first treatment provider and second treatment provider. The method further includes obtaining first information of a first recommended treatment for the dentition and second information of a second recommended treatment for the dentition from the first and second treatment providers. The method further includes providing the first information and the second information of the second recommended treatment to the first user device.

The invention relates to the field of oral clinical orthodontics, and discloses a method for generating an oral correction scheme, comprising: acquiring a face composite model of an initial state of a patient, the face composite model comprising a dental jaw portion and a soft tissue portion; respectively obtaining P correction schemes of the patient, wherein each correction scheme corresponds to a target state of tooth jaw movement; correspondingly obtaining face prediction models of P target states according to the tooth jaw movement and deformation face composite models of the P correction schemes; and in the P correction schemes, selecting an optimal correction scheme as a target correction scheme according to evaluation of the face prediction model in the target state. The invention further discloses electronic equipment and a storage medium, the orthodontic scheme is determined by predicting the appearance, the predicted result is closer to the real effect after orthodontic treatment, more bases are provided for the patient to select the orthodontic scheme, the patient can conveniently determine the ideal orthodontic scheme from the face expression, and a more preferable orthodontic scheme is generated.

The invention relates to an occlusion guide plate designing and manufacturing method based on dentition mechanical analysis, which comprises the following steps: S1, acquiring oral cavity image data of a patient, and constructing a three-dimensional digital model comprising a dental crown, a tooth root and an alveolar bone structure; s2, calculating an overall mechanical reference point of a tooth root structure of an anterior maxillary tooth area; s3, acquiring an incisal edge midpoint of each incisal tooth and a cusp point of each canine tooth in the maxillary anterior tooth area, solving a geometric center, and connecting the geometric center with an overall mechanical reference point to form a dentition direction vector; s4, calculating the displacement relationship between the target dentition arrangement and the initial dentition arrangement in the lip-tongue direction; s5, calculating an included angle between the occlusal force direction of the maxillary anterior tooth area and the dentition direction vector; s6, determining key morphological parameters of the occlusion guide plate according to the calculation result of the included angle in S5; and S7, manufacturing the occlusion guide plate. Compared with the prior art, the method has the advantages of precise mechanical adaptation, quantitative treatment prediction, personalized design and the like.

The invention discloses a digital stable jaw pad designing and manufacturing method, and relates to the technical field of oral rehabilitation and digital medical technology.The digital stable jaw pad manufacturing method comprises the following steps that a, three-dimensional point cloud data of oral dentition and mucosa of a patient is obtained through a three-dimensional scanner; b) determining a stable jaw position coordinate model by using an optical motion capture system; c) designing a jaw pad three-dimensional entity model with an anterior tooth area, a posterior tooth area and an edge structure based on the three-dimensional point cloud data and the stable jaw coordinate model; and d) manufacturing the jaw pad through 3D printing equipment, wherein the 3D printing equipment is formed by adopting a polyether-ether-ketone material. By integrating digital acquisition, design and manufacturing technologies, the pain point of a traditional method is solved, and personalized, high-precision and rapid manufacturing of the stable jaw pad is realized.

The invention provides an adjustable oral soft tissue traction fixing device for an apical surgery. The adjustable oral soft tissue traction fixing device comprises a dentition fixing component, a lower jaw fixing component and a soft tissue traction fixing component, the dentition fixing component is used for being fixed in the oral cavity of a subject and located at the upper end of the dentition where the operation teeth are located. The dentition fixing component comprises a buckle plate and an insertion rod; a groove is formed in the lower side of the buckle plate, and the buckle plate is buckled on the dentition through the groove; the upper end of the insertion rod is fixed to the first side of the buckle plate. The lower jaw fixing component comprises a bottom plate and a side plate; the bottom plate and the side plate are connected to form an L shape; the lower jaw fixing component is used for being fixed outside the oral cavity of a subject; first insertion holes are formed in the side plates in the vertical direction; the lower part of the inserting rod is inserted and fixed in the first inserting hole; the first end of the soft tissue traction fixing component can be adjustably fixed to the lower jaw fixing component, and the second end of the soft tissue traction fixing component is used for extending into the oral cavity of a subject so as to achieve traction and fixing of gingival soft tissue flaps.

A method of multimodal scanning may include generating surface scan data of an intraoral structured using structured light. The method may include generating volumetric scan data of an internal structure of the intraoral structure with OCT scanning. The OCT scan data may be aligned with the surface scan data. A three-dimensional volumetric model of the patient's dentition may be generated based on the aligned OCT scan data and the surface scan data.

The present specification discloses a tooth recognition method and apparatus, a storage medium, and an electronic device. The method comprises: firstly performing recognition on a low-resolution three-dimensional image of a target area; obtaining dentition position information of each tooth in the target area; determining key position information of the teeth from the dentition position information, so as to obtain a high-resolution local image corresponding to the key position information; performing recognition on the high-resolution local image to obtain key tooth recognition results; and on the basis of the dentition position information from the low-resolution image and the key tooth recognition results from the high-resolution image of key positions, obtaining a tooth recognition result for an original three-dimensional oral image. Recognition is firstly performed on the low-resolution three-dimensional image to obtain the dentition position information, and then tooth recognition is performed on the high-resolution three-dimensional image corresponding to the key position information, thereby improving the accuracy of tooth recognition results.

A method of treating a patient's dentition may include generating, from a first 3D model of a first physical impression of a first arch of a patient and a second 3D model of a second physical impression of a first arch of the patient, a reconstructed 3D model of the first arch of the patient by incorporating one or more portions of the first 3D model with one or more portions of the second 3D model and creating a treatment plan for the patient's dentition using the first 3D model. The method may also include fabricating a set of dental alignment devices configured to implement the treatment plan when the dental alignment devices in the set of dental alignment devices are sequentially worn on the patient's dentition.

The novel digital mandibular advancement appliance parameter design method comprises the following steps: step 1, constructing a three-dimensional finite element model comprising upper and lower jawbones, dentition, periodontal ligament, temporal-mandibular joints and a mandibular advancement appliance based on the three-dimensional finite element model; adjusting the boundary of the three-dimensional finite element model through the mandible kinematics parameters to form a simulation boundary; 2, constructing a multi-parameter collaborative prediction model based on the obtained stress data under different combinations of the mandibular protraction amount and the vertical opening amount; based on the stress data, constructing a three-dimensional stress distribution cloud picture by adopting three-dimensional simulation interaction software; 3, inputting the simulation boundary into the multi-parameter collaborative prediction model, and outputting risk early warning information; and 4, determining design parameters of the mandibular advancement appliance based on the three-dimensional stress distribution cloud picture and the risk early warning information. According to the method, the parameters of the appliance are customized, and the designed forward movement amount and the opening amount of the appliance better conform to personal characteristics.

Provided are a method for generating an orthodontic design scheme, an electronic device, and a storage medium, for improving the success rate of automatically generating orthodontic design schemes. The method comprises: an electronic device acquiring dentition information of a patient, such as initial position information and target position information (step 101); generating a first orthodontic design scheme on the basis of the dentition information and a preset scheme generation process, wherein the first orthodontic design scheme comprises procedures of N orthodontic steps (step 102); traversing the procedure of each orthodontic step, and recording position information corresponding to a tooth marked with a key position node in the procedure of a first orthodontic step (step 103); and adjusting the position of the tooth marked with the key position node in the procedure of the first orthodontic step according to the position information corresponding to the tooth marked with the key position node in the procedure of the first orthodontic step and orthodontic constraints, to give a second orthodontic design scheme (step 104). Thereby, the generation efficiency and success rate of automatically generating an orthodontic design scheme can be improved.

In some embodiments thereof, the present invention discloses systems and methods for expeditiously designing and fabricating properly-fitted dental prostheses. A customizable arch-shaped apparatus approximating dentition is employed intraorally to register positional and relational characteristics between maxillary and mandibular arches, including the vertical dimension of occlusion. The apparatus is configured to allow accurate interface with oral anatomy via its constituent material(s) being pliable and moldable preferably but not necessarily when heated. Representations of dentition may be integrated on the apparatus to aid proper positioning. Intraoral scan data detailing precise arch dimensions is either referenced from pre-existing patient records or procured through digital oral scanning of the apparatus in situ. The registered positional relationships and acquired scan data are jointly utilized to virtually model and subsequently manufacture bridgework, veneers or dentures; the apparatus allowing dentition to be modeled and fabricated in a singular office visit prior to a final, confirmatory try-in where minor adjustments may ensue.

Embodiments may provide improved techniques for creating custom lingual or labial ceramic orthodontic brackets, and which provides the capability for in-office fabrication of such brackets. For example, a method of manufacturing customized ceramic labial / lingual orthodontic brackets by ceramic slurry-based AM may comprise measuring dentition data of a profile of teeth of a patient, based on the dentition data, creating a three dimensional computer-assisted design (3D CAD) model of the patient's teeth using reverse engineering, and saving the 3D CAD model on a computer, designing a 3D CAD bracket structure model for a single labial or lingual bracket structure, importing data related to the 3D CAD bracket structure model into a ceramic slurry-based AM machine, directly producing the bracket (green part) in the ceramic slurry-based AM machine by layer manufacturing, and processing the brackets in a sintering and debinding oven prior to direct use.

A system for fabricating a dental restoration to restore a tooth at a restoration site in a dentition of a patient is disclosed. The dentition includes a restoration dental arch and an opposing dental arch. The restoration dental arch includes the restoration site and the opposing dental arch is opposite the restoration dental arch. The system includes an impression apparatus, a motion capture apparatus, an interface apparatus, and a restoration design system. The impression apparatus is configured to capture an impression of the dentition of the patient. The motion capture apparatus is configured to capture a plurality of location data points that represent the locations of the opposing dental arch relative to the restoration dental arch. The interference model generation system is configured to generate an interference model for the restoration site. The restoration design system is for designing a restoration using the interference model.

Embodiments relate to obtaining a virtual 3D representation of a patient's dentition, segmenting the virtual 3D representation to obtain first and second segmented tooth representations of neighboring teeth in the patient's dentition. The method can involve determining an initial tooth pose for the first segmented tooth representation using a geometric parameter of the first segmented tooth representation and a geometric parameter of the second segmented tooth representation. A normalized tooth representation of the first segmented tooth representation is obtained by transforming the first segmented tooth representation using the initial tooth pose for the first segmented tooth representation. The normalized tooth representation is then input into a trained neural network to output a correct tooth pose for the first segmented tooth representation.

A wearable dental apparatus for capturing dental properties of a patient includes a support structure. The support structure is configured to be worn on the dentition of the patient. The wearable dental apparatus includes at least one sensor. The sensor is coupled to the support structure. The sensor is configured to capture a series of measurement of a dental property of the patient. The measurements are associated with one or more locations on the dentition of the patient. A dental map is generated based on at least some of the measurements and is displayed. The dentition of a patient is restored by selecting a restoration material based on the measurements.

The invention provides a condyle positioning device and a lower jaw fixator with the condyle positioning device.The condyle positioning device comprises a condyle positioning component, a tooth retention guide plate and a dividing structure formed between the condyle positioning component and the tooth retention guide plate. Wherein the tooth retention guide plate and the condyle positioning component are of an integrated structure and can be separated along the segmentation structure, the condyle positioning component is suitable for being fixed to the front edge of the ramus of the mandible of a patient, and the tooth retention guide plate is manufactured based on the tooth form of the mandible part of the patient and fixed to the corresponding dentition. The condyle positioning component is connected with the lower jaw fixator through a mortise and tenon joint structure so as to position the specific position of the condyle of the patient after the lower jaw operation.

A system for scanning a dentition may include an intraoral scanner, a processor, and memory storing instructions that when executed by the one or more processors may cause the system to receive point cloud data of a patient's detention, and generate a plurality of possible models of the patient's dentition based on the received point cloud data by manipulating an aspect of the point cloud data multiple times, for each manipulation of the point cloud data, generating a possible model of the patient's dentition to generate the plurality of possible models of the patient's dentition and determine a position variance between positions of respective dental features of the patient's detention between each of the possible models of the of the patient's dentition. The system may also output a depiction of the scanned location on the patient's detention based the measured range of possible models.

The invention provides a tooth orthodontic path generation method and device, electronic equipment and a medium. The method comprises the following steps: acquiring three-dimensional point cloud data of an initial dentition of a target patient and an initial pose of each tooth in a global coordinate system; calculating a target six-dimensional pose of each tooth based on the target dental arch curve and orthodontic medical constraints; and by taking the target six-dimensional pose corresponding to each tooth as a search space, generating an optimal orthodontic path of each tooth from the initial pose to the target six-dimensional pose by using an improved particle swarm optimization algorithm. Therefore, automatic, high-precision and interactive tooth orthodontic path generation is realized, and the clinical efficiency and personalized level of tooth orthodontic treatment are improved.

A method of planning an orthodontic treatment for a patient may include receiving a digital representation of the patient's dentition in an initial arrangement, determining a first geometry for an upper shell of an orthodontic appliance. The first geometry may include a first plurality of tooth-receiving cavities shaped to receive an upper jaw of the patient's dentition and an upper cutout disposed along an upper gingival edge of the upper shell. The method may also include determining a location of an upper elastic band receiving member. The location of the upper elastic band receiving member may correspond to a position of the upper cutout. The location of the upper elastic band receiving member may be determined so as to generate a tooth repositioning force to facilitate repositioning of the patient's dentition when an elastic band is secured to the upper elastic band receiving member.

The invention relates to a method for determining whether a tooth is correctly shaped and oriented to avoid interference with another tooth using virtual articulation. The method comprises a) receiving data indicative of a virtual dentition of an oral cavity of a patient by a computing device, the data indicative of the virtual dentition including data indicative of at least one of a virtual mandibular arch representing a mandibular arch of the patient or a virtual maxillary arch representing a maxillary arch of the patient; b) receiving data indicating a selected point on the virtual dentition of the oral cavity; and c) determining a tangent vector indicating a direction of motion of the selected point and determining whether the orientation of a tooth of the virtual dentition or the shape of the tooth is correctly shaped and oriented based on the determined tangent vector, wherein the tangent vector is based on a rotational axis of the virtual mandibular arch.

Methods and kits of materials and supplies for restoring teeth by an injection molding process and / or mold overlays in situ in a patient's mouth so as to correct the imperfect teeth of the patient's dentition. The imperfect teeth are corrected by applying restoration materials using a mold of a corrected model of the patients dentition placed over the imperfect teeth. Adjacent teeth may be covered with a polymer release material prior to injection molding of teeth to be corrected, such that the teeth to be corrected have at least one tooth between them draped with the polymer release material to provide a space adjacent to each of the corrected teeth. The corrected teeth are then covered with the polymer release material in a second round of treatment and restoration material is applied to one or more previously covered teeth to provide a first layer which simulates the dentin layer of teeth. Thereafter a simulated enamel layer is applied over the dentin layer using one or more alternating molds and yet another simulated incisal layer is applied over the enamel layer using one or more alternating molds employing the techniques described.

The toothbrush according to the invention is designed to be elastic and reversibly deflectable in the area of ​​the finger groove (Fm). If the maximum permissible cleaning force on the teeth and gums is exceeded, small but perceptible movements occur between the individual transverse ribs (Qs) in the area of ​​the finger groove (Fm). These movements are easily felt by the user's fingers resting on them, thus allowing the cleaning force to be constantly monitored, controlled, and limited. Furthermore, due to the coordinated design of the transverse ribs (Qs) (essentially in the form of an irregular truncated pyramid) and the essentially trough-shaped transverse recesses (Qa), there is no risk of pinching or chafing of the skin of the fingers, even when the recommended cleaning force is significantly exceeded.and wherein the surface and volumetric contact between all features in the area of ​​the finger groove (Fm) and the fingers resting thereon is consistently / permanently good, comfortable, stable, non-slip and secure, regardless of which specific tooth area in which specific quadrant of the dentition is being brushed or cleaned. The toothbrush according to the invention, in particular a mechanical manual toothbrush, can be manufactured to a high standard and routinely using both single-component and multi-component technologies (with the exception of bristles).

The invention relates to the field of oral medicine, and discloses an oral bone grafting navigation system based on multi-modal mixed reality interaction, which comprises a data processing module, a mixed reality display module and a navigation module, the data processing module is used for acquiring CBCT data and oral scanning data of the oral cavity of the patient, generating a composite three-dimensional model fusing bone tissue and dentition morphology according to the acquired data, and obtaining the three-dimensional morphology, the target placement position and the screw fixing position of the bone grafting bone sheet; the mixed reality display module comprises a head-mounted display device capable of displaying the virtual indication unit and the virtual operation area presentation unit; and the navigation module comprises a navigation marker and an optical positioning camera and is used for tracking the spatial positions of the surgical instrument, the bone sheet and the screw in real time. According to the system and the method, multi-modal image data are combined, and the mixed reality display module and the navigation module are combined, so that real-time visual guidance of the bone slice position and the screw implanting path is realized, and the bone grafting operation efficiency and safety are improved.

Methods of representing user edits or modifications of a treatment plan for a dental apparatus (e.g., one or a series of aligners) by managing an original clinical data set and a set of modifications of the clinical data set. Also described herein are methods of displaying, condensing, storing and reconstructing collision regions between two or more teeth.

The invention belongs to the field of dental restoration digitalization, and particularly relates to an anterior tooth layered resin filling restoration method based on the guidance of a digital guide plate. Comprising the following steps: S1, obtaining a three-dimensional digital model of an abutment tooth preparation body; s2, generating a digital model of the dentin form of the defect part layer by layer by using oral cavity computer-aided design software; s3, completing the design of the enamel layer form on the digital model of the dentin form of the last layer of tooth defect part; s4, cover shell type guide plates covering adjacent teeth of the defective teeth are designed, and the cover shell type guide plates are numbered; s5, performing 3D printing on each layer of model and the guide plate, and checking the in-place condition of the guide plate; and S6, filling corresponding dentin resin and enamel resin in each stage of guide plate, resetting the guide plate filled with the resin to the oral dentition, and completing layered resin filling through illumination curing. According to the method, the process is optimized, the operation is simplified, and the operation precision is ensured by fully utilizing the advantages of the digital technology.