184 results about "Dental Models" patented technology

The invention relates to a dynamic simulation method and system for a tooth movement process based on a Type model, and the method comprises the steps: carrying out the data collection of an artificial tooth and a fixed appliance through three-dimensional scanning, and obtaining the three-dimensional data of a tooth jaw structure; performing overlap analysis on the crown root model according to the three-dimensional data to obtain a digital dental model containing periodontal tissues; performing material attribute assignment on an anatomical structure in the digital tooth jaw model according to preset material parameters to obtain a biomechanical tooth jaw model; and performing time recursion iteration on the biomechanical tooth jaw model through finite element analysis to obtain four-dimensional dynamic simulation data for simulating a tooth movement process, so as to provide visual orthodontic process teaching demonstration based on the four-dimensional dynamic simulation data. According to the invention, the dynamic visual simulation of the tooth movement process is realized, the feedback of the Type Dont system can be quantified, and the teaching interactivity is improved.

A three-dimensional tooth model segmentation method of a double-branch geometric attention network based on centroid guidance is oriented to oral cavity three-dimensional scanning point cloud data and comprises the steps that firstly, normalization and normal vector estimation are conducted on the oral cavity three-dimensional point cloud data, a double-branch encoder for coordinate and normal decoupling is constructed, and a global topological structure and local geometric features are extracted respectively; secondly, a separable attention mechanism guided by the mass center is introduced into a coordinate branch so as to improve the distinguishing ability of adjacent teeth, and a graph convolution attention mechanism is introduced into a normal branch so as to strengthen the boundary expression of the teeth and gingiva; further, in the fusion stage, a mass center thermodynamic diagram and multi-scale feature aggregation are combined, and joint modeling of global and local structures is achieved; and finally, collaborative optimization of instance segmentation and centroid localization tasks is carried out through a dynamically weighted joint loss function. According to the method, the segmentation precision and robustness under complex cases are remarkably improved while the light weight is kept, and the automation and clinical practicability of oral diagnosis and treatment are enhanced.

The invention relates to the technical field of dental digitization, and discloses a three-dimensional tooth model construction method, device, equipment and medium, and the method comprises the steps: obtaining a multi-frame oral cavity fringe pattern and an oral cavity color image, and carrying out fringe enhancement processing on the multi-frame oral cavity fringe pattern to obtain a multi-frame fringe enhancement pattern; extracting a stripe center point coordinate, and obtaining a code value of the stripe enhancement graph; performing mask area analysis on the oral cavity color image and the code value by using the segmentation model to obtain a tooth area mask; obtaining a target stripe center point coordinate and a target code value through data screening; performing data encapsulation on the target stripe center point coordinate, the target code value and the oral cavity scene color image, and sending oral cavity encapsulation data to a cloud node; performing real-time point cloud reconstruction based on the oral cavity encapsulation data to obtain three-dimensional point cloud data corresponding to the teeth of the target user; and performing point cloud optimization on the three-dimensional point cloud data to obtain a three-dimensional tooth model of the target user. According to the invention, the efficiency of constructing the three-dimensional tooth model can be improved.

The invention discloses a design and preparation method of a personalized gradient thickness invisible orthodontic appliance model, relates to the technical field of tooth orthodontics, and aims to overcome the defects that the thickness is uncontrollable and preset mechanical properties cannot be accurately realized when an invisible orthodontic appliance is manufactured by a traditional hot press molding process. The method comprises the following steps: firstly, reconstructing a personalized dental model containing tooth roots and bone tissues based on CBCT data of a patient; designing a plurality of gradient thickness appliance schemes; through finite element analysis and simulation, selecting an optimal scheme which is most favorable for realizing correction effects such as overall movement of teeth; and finally, integrally forming and manufacturing the selected appliance by adopting a direct 3D printing technology. The direct 3D printing ensures that the appliance can be manufactured in a high-precision and high-fidelity manner from a complex gradient thickness structure with thick gingiva and thin occlusal surface, so that the optimized mechanical property verified by simulation can accurately reproduce in a real object, the inherent defects of a hot-pressing film process are thoroughly overcome, and the accuracy and predictability of correction are remarkably improved.

Systems and methods for identifying teeth in a patient image are provided. For example, a computer-implemented method can include, by one or more processors, accessing a 2D image including a depiction of a patient's teeth, where a plurality of the depicted patient's teeth are annotated with tooth identifiers according to a first tooth identification scheme. The computer-implemented method can further include transmitting, to a server computing device, the 2D image, and receiving from the server computing device, a second tooth identification scheme for the patient's teeth in the 2D image. The second tooth identification scheme can be generated by accessing a 3D model of the patient's teeth, projecting the 3D model onto the 2D image, comparing the projection to the 2D image to determine a probability parameter for each of one or more teeth in the 2D image, and determining, based on the probability parameters, the second tooth identification scheme.

The specification provides a method and device for generating a three-dimensional dental model. The method comprises: preprocessing point cloud data of a three-dimensional dental model after orthodontic treatment in an existing data set, and extracting geometric features from the preprocessed point cloud data; obtaining a vector quantization variational autoencoder model to be trained, and training the model by: encoding the extracted geometric features into a hidden space based on the encoder of the vector quantization variational autoencoder model, and further reconstructing the encoded information in the hidden space into the point cloud data of the three-dimensional dental model after orthodontic treatment through the decoder; and training a diffusion model in the hidden space of the vector quantization variational autoencoder model, wherein the diffusion model is used for diffusion processing of the encoded information input into the hidden space to generate new encoded information, so that the decoder generates new point cloud data of the three-dimensional dental model after orthodontic treatment according to the new encoded information.

Device for the digitization and manufacturing of dental models, for replicating the cavity and position of the implant connection in plaster and digital 3D models, having an analog, a fixing element and a multipurpose accessory, as a reference when digitizing and as an aid when inserting the analog in and removing it from the model. The analog, the fixing element and the accessory are adapted for fixing the analog on the 3D printing model and / or connecting the analog to the accessory. The external surface of the analog combines cylindrical portions and flat vertical and horizontal faces, which define positioning surfaces, for use as a scan analog. And, for plaster models, the device includes a protective cover for the analog.

Embodiments of the disclosure relate to an intraoral image processing method and an intraoral image processing apparatus, and the intraoral image processing method according to an embodiment may include obtaining an intraoral image by scanning an object including one or more teeth, generating a first tooth image from the intraoral image, generating, based on the first tooth image and tooth model data, a second tooth image including roots of the teeth, and displaying the second tooth image.

A method is provided for generating and / or displaying a dynamic tooth chart In some cases, the method can include receiving dataset(s) associated with a patient. Each dataset comprises data corresponding to an imaging modality of a plurality of imaging modalities and provides information on a dentition of the patient. The datasets are processed to generate, for each dataset, one or more tooth portions. Each tooth portion comprises an image of one or more teeth of the patient. The one or more tooth portions are arranged into a dental chart. A visualization of the dental chart of the patient is generated and provided to a user device for presentation in a user interface. In some cases, a method can include determining one or more chart annotations can by performing a shape analysis, a teeth arrangement analysis, and / or a material analysis on 3D dental model(s) and / or 2D images of the patient's jaw.

The invention provides a jaw pad model determination method and device, computing equipment and a storage medium. The jaw pad model determination method comprises the steps that first tooth model data and first jaw pad model data are acquired; according to the first tooth model data, determining a first position of a key point of a target tooth to be added with a jaw pad in the first correction step; the key point is used for indicating the position of the jaw pad to be added on the occlusal surface of the target tooth; according to the second tooth model data, determining a second position of the key point of the target tooth to be added with the jaw pad in the second correction step; determining movement information of each key point according to the first position of each key point and the second position of each key point; and determining a second jaw pad model corresponding to the target tooth in the second correction step according to at least one of the movement information of each key point, the first jaw pad model data and the corresponding occlusion relationship of the target tooth in the second correction step. According to the scheme, the corresponding jaw pad model can be adaptively generated for each patient.

A computer implemented method for rendering digital three-dimensional dental models includes receiving a first digital 3D dental model including a first dental information of a patient; receiving a second digital 3D dental model including a second dental information of the patient; generating, in the digital 3D space, a superimposed model by superimposing one of the first digital 3D dental model or the second digital 3D dental model on another of the second digital 3D dental model or the first digital 3D dental model; and arranging a 2D controller and the superimposed model relative to each other such that a position of the 2D controller defines a boundary that demarcates the superimposed model between a first zone and a second zone.

The invention discloses a tooth socket model generation method and device based on personalized mechanical feedback, and the method comprises the steps: generating initial tooth models and tooth correction schemes of a plurality of object samples according to the oral scanning data of the plurality of object samples, and then generating a basic tooth socket model of each correction step; constructing a tooth socket system finite element model of each correction step of each object sample; performing optimization calculation through a multi-objective optimization calculation model to obtain an optimized tooth socket model of each correction step of each object sample; taking the initial tooth models and the orthodontic schemes of the plurality of object samples as input, taking the optimized tooth socket model of each orthodontic step of the plurality of object samples as output, and training a deep learning model; and after the initial tooth model and the orthodontic scheme of the target object are obtained, inputting the initial tooth model and the orthodontic scheme into the trained deep learning model to obtain the optimized tooth socket model of the target object. According to the method, the personalized optimized tooth socket model can be quickly generated.

Embodiments of the present application relate to the field of digital processing, and disclose a display method and device of a hard palate appliance, an electronic device and a storage medium. The display method of the hard palate appliance in the present application comprises: obtaining information of a digital dental model, the information of the digital dental model at least including a maxillary tooth grid, a hard palate grid and a bite direction in tooth data of a case; calculating control points of teeth with preset numbers in the maxillary tooth grid; obtaining a grid model of a lower surface according to the control points and the hard palate grid; obtaining a grid model of an upper surface according to the grid model of the lower surface and the bite direction; generating a display model of the hard palate appliance according to the grid model of the lower surface and the grid model of the upper surface; and displaying the display model of the hard palate appliance. In the embodiments of the present application, the morphological characteristics of the hard palate appliance can be displayed.

The utility model relates to the technical field of dental model trays, in particular to a dental model tray which comprises two supporting plates which are bilaterally symmetrical, a fixing block is mounted on the right side of the upper side of the left side supporting plate; the same fixing block is arranged on the left side of the upper side of the right side supporting plate; a connecting rod is mounted between the two fixing blocks; all the mechanisms mounted on the two supporting plates are the same; a rotating mechanism is mounted on the upper side of the supporting plate, and a dental cast disc I is mounted on the upper side of the rotating mechanism; dental cast plates II are symmetrically mounted on the front side of the dental cast plate I; when the rotating mechanism needs to be used, the bolt is unscrewed, then the two rotating plates can be rotated, the two rotating plates drive the first dental cast disc and the second dental cast disc to move respectively, then the distance between the two dental cast discs is changed, the oral cavity of a user can be adjusted in a matched mode, and the problem that the dental cast discs are poor in adaptability is solved.

The invention discloses a design method of a dental digital model with an information code. The design method comprises the following steps: acquiring a dental digital model to be added with the information code; obtaining a tongue inclination angle of a preset tooth corresponding to the information code; comparing the relation between the tongue inclination angle and a first threshold value, and determining a target adding position of the information code through a comparison result; continuously comparing the relation between the tongue inclination angle and a second threshold value, and judging whether the information code needs to be obliquely arranged or not according to a comparison result; wherein the second threshold value is smaller than the first threshold value; adding the information code to obtain the dental digital model with the information code; the invention also discloses a dental model obtained by printing the dental digital model obtained by the design method, and an identification system for identifying the dental model.

A method for generating an orthodontic treatment plan for a user's dental arch, comprising the following successive steps: A) generating initial and final models representing the dental arch at initial and final times; B) for each tooth model in the initial model, determining a distance between the tooth model configurations in the initial and final models and the shortest possible time for the tooth model to travel said distance; C) identifying the limiting tooth model, which has the longest minimum travel time; D) determining a deformation scenario whereby the initial model is transformed into the final model by moving the tooth models so as to slow down at least one first slowed-down tooth model different from the limiting tooth model. No abstract figure

Provided in the present disclosure are an image processing method and apparatus, and an electronic device and a storage medium. The method comprises: acquiring relative positional relationship information between an intraoral model and a neutral facial model of a target user; using base data of basic expressions to form a plurality of pieces of facial data corresponding to expression states; using the facial data to update the expression state of the neutral facial model; and on the basis of the relative positional relationship information, superimposing a portion, for which an aesthetic design has not been generated, in the intraoral model and a pre-constructed dental model onto the neutral facial model, the expression state of which has been updated, so as to obtain an expression image showing an aesthetic design effect. In the present solution, aesthetic restoration effects under different expressions are dynamically displayed to a target user by means of expression images showing aesthetic design effects, thereby improving the display effect of the aesthetic restoration effects, and the user experience.

1. Name of the product in this design: Digital Impression Apparatus for Oral Cavity. 2. Purpose of this design: To collect data and obtain three-dimensional morphological data of oral cavity or dental models. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The present application relates to the technical field of oral cavity medical equipment, in particular to an oral cavity implant bridge and a using method thereof, the installation assembly comprises an antiskid plate, a connecting plate and an extension plate, the upper surface of the cleaning plate is provided with the extension plate, the extension plate is arc-shaped, the upper surface of the arc-shaped extension plate is fixedly provided with the connecting plate, the connecting plate is inclined, and the inclination angle of the connecting plate is thirty to forty-five degrees; beneficial effects: when the whole bridge is installed on the upper surface of the corresponding dental bed of the patient, after installation is completed, the patient can bite from the inside of the oral cavity, judge whether the tooth model is suitable, if not, communicate with the doctor in time, adjust the tooth model, then the doctor installs the false tooth according to the tooth model, through the effect of the antiskid plate, it is ensured that the patient will not slide in the process of occlusion, and it is ensured that the patient will not hurt the human tissue in the oral cavity.

According to the design and manufacturing method of the orthodontic postoperative intermaxillary traction device based on the invisible orthodontic device, CT scanning is conducted on a patient, craniomaxillofacial and tooth three-dimensional data are collected, and preparation is made for obtaining three-dimensional virtual tooth data of the patient through manufacturing of an anhydrite tooth model; data of a patient are imported into cranio-maxillofacial surgical operation planning software, a cranio-jaw virtual model of the patient is established, a manufactured anhydrite tooth model is subjected to three-dimensional scanning, dentition data are obtained, a maxillary tooth bone section is moved to a target position through a simulated operation on the virtual cranio-jaw model, and the patient is subjected to cranio-maxillofacial surgical operation planning software. And then determining a target position of a mandibular tooth bone section based on a final occlusion relationship, importing dentition data of the patient into three-dimensional virtual design software, performing Boolean operation, and manufacturing a traction device by using a three-dimensional printing technology. According to the device, assistance of methods such as a dental arch splint and an intermaxillary traction nail is not needed, intermaxillary elastic traction can be carried out after an invisible orthodontic patient completes a orthodontic operation, and it is ensured that the occlusion relation after the orthodontic operation meets the requirement.

An automated method for aligning a 3D single tooth model to 3D oral scan data includes determining an oral scan landmark and a teeth curve formed by teeth in the 3D oral scan data, determining a margin line of a target tooth in the 3D oral scan data and a region of interest in the 3D oral scan data, determining first to third axes of the 3D oral scan data in the region of interest based on the oral scan landmark, determining a single tooth landmark of the 3D single tooth model, determining fourth to sixth axes of the 3D single tooth model based on the single tooth landmark and aligning the 3D single tooth model to the 3D oral scan data such that the fourth to sixth axes of the 3D single tooth model respectively overlap the first to third axes of the 3D oral scan data.

The present invention relates to a fixator (10) for fixing a first tooth model (52) and a second tooth model (54), wherein the fixator (10) has a first fixator-side guide element (28) and a second fixator-side guide element (30), both of which extend in a longitudinal direction (12) of the fixator (10), wherein the first fixator-side guide element (28) can be coupled to a first model-side guide element (62) of the first tooth model (52) and the second fixator-side guide element (30) can be coupled to a second model-side guide element (64) of the second tooth model (54), wherein the first fixator-side guide element (28) is configured to guide the first model-side guide element (62) in the longitudinal direction (12) when the first fixator-side guide element (28) is coupled to the first model-side guide element (62), and wherein the second fixator-side guide element (30) is configured toto guide the second model-side guide element (64) in the longitudinal direction (12) when the second fixator-side guide element (30) is coupled to the second model-side guide element (64). Furthermore, the present invention relates to a system (50). Furthermore, the present invention relates to a method (100) for fixing a first dental model (52) and a second dental model (54) by means of at least one fixator (10).

1. The name of the design product: intraoral scanner and its main body. 2. The use of the design product: design 1 is the main body of the intraoral scanner for collecting data information and obtaining three-dimensional topographic data of the oral cavity or tooth model; design 2 is the intraoral scanner for collecting data information and obtaining three-dimensional topographic data of the oral cavity or tooth model. 3. The design points of the design product: the design points of design 1 are the shape of the main body of the intraoral scanner; the design points of design 2 are the combination of shape and color of the intraoral scanner. 4. The picture or photo that best indicates the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design. 6. Other circumstances that need to be explained: design 1 is a partial design application, and the dotted part is the design content that does not need protection; design 2 requests protection of color.

This application discloses a cutting system and method for orthodontic appliances. The cutting method includes: obtaining a tooth model, wherein the tooth model is based on a tooth model obtained before, during, or after orthodontic treatment; obtaining thickness information of the orthodontic appliance in the region where at least one tooth is located based on the tooth model; segmenting the orthodontic appliance based on the thickness information to obtain multiple segment intervals; determining a first energy parameter based on the segment intervals, wherein the first energy parameter is used to characterize the relationship between the energy of the laser and the thickness to be cut; and cutting the area to be cut of the orthodontic appliance corresponding to the segment intervals based on the first energy parameter. This cutting method allows the laser energy to be adapted to the cutting requirements of different cutting thicknesses, which is beneficial to achieving precise energy control during the orthodontic appliance cutting process. Therefore, this cutting method has better dynamic performance and a higher cutting adaptation rate for orthodontic appliances with complex curved surfaces.

The invention is a system and method for forming a dental appliance. A control module may be configured to receive data concerning a dental model and determine a toolpath for creating a pre-cut substrate based on the data. A cutting module may be configured to create the pre-cut substrate based on the toolpath. A forming module may be configured to apply a second substrate to the pre-cut thermoforming substrate received from the cutting module and form a dental appliance from the pre-cut substrate and the secondary substrate. The method may include receiving data concerning a dental model, determining a toolpath for cutting a substrate into a pre-cut thermoforming substrate based on the data, pre-cutting a first substrate based on the toolpath to form a pre-cut substrate, applying a second substrate to the pre-cut substrate, and thermoforming a dental appliance from the pre-cut substrate and the second substrate.

The disclosure discloses a tooth correction method and device, electronic equipment and readable storage medium, relates to the technical field of computers, and particularly relates to the technical fields of orthodontics, computer-aided design, etc. The specific implementation scheme is: obtaining a first tooth model of a tooth to be corrected at a correction restart position and a second tooth model of the tooth to be corrected at a correction target position; obtaining a coarse registration matrix of overall teeth of the tooth to be corrected and a fine registration matrix of each tooth of the tooth to be corrected according to the first tooth model and the second tooth model; obtaining a restart registration matrix of each tooth of the tooth to be corrected according to the coarse registration matrix of overall teeth of the tooth to be corrected and the fine registration matrix of each tooth of the tooth to be corrected; and obtaining an interruption correction strategy from registration of the first tooth model to the second tooth model according to the restart registration matrix of each tooth of the tooth to be corrected.