164 results about "Dental structure" patented technology

The invention discloses a personalized tooth modeling method and system based on digital oral cavity imaging, and relates to the technical field of digital modeling. The invention discloses a personalized tooth modeling system based on digital oral imaging. The personalized tooth modeling system comprises a data acquisition module, a model construction module, a model fusion module, a tooth gap labeling module, a tooth health prediction module and a nursing matching module. According to the method, the personalized tooth model is generated by synthesizing the tooth structure and activity range data of the user, and the deep cleaning scheme and the daily nursing scheme are accurately matched according to the tooth gap and tooth surface health condition, so that the nursing scheme of each user can be customized according to the unique oral cavity condition; by comprehensively acquiring the tooth and jaw structure, the tooth movement range and the health information of the user, the accuracy and comprehensiveness of the model are ensured, and sufficient data support is provided for subsequent cleaning and nursing schemes.

The invention relates to the technical field of oral cavity imaging, in particular to an oral cavity nursing monitoring imaging system and method.The system image structure decomposition module, the local contour recognition module, the image change detection module, the abnormal area filling module and the color gamut dynamic regulation and control module are included. Functional areas are clearly divided, the area recognition precision of images is improved, particularly, in tooth boundary recognition, contrastive analysis of brightness and color differences is utilized, the recognizability of tooth contours and continuous frame tracking of tooth structure changes are remarkably enhanced, the dynamic deformation path of the tooth structure changes is displayed, the monitoring capacity of tiny changes is improved, and meanwhile, the recognition accuracy of the tooth contours is improved. The automatic completion technology is used for repairing the fracture boundary in the image and restoring the boundary continuity, and the color channel is adjusted to ensure the overall visual consistency of the image and avoid visual discordance, so that the image quality and the analysis accuracy are improved.

The utility model discloses a bionic service type humanoid robot head structure which comprises a head structure, a sensory system, a mouth system, a visual system, a nose system and an ear system, the mouth system, the visual system, the nose system and the ear system are connected with the sensory system, and the mouth system, the visual system, the nose system and the ear system are installed on the head structure. The mouth system comprises a jaw structure, a tooth structure, a lip structure and a tongue structure, the sensing center, the sensor network, the signal processing unit and the execution unit form a sensory system, the sensory system can timely and effectively feed back external environment changes, and the capability of interacting with the outside is greatly improved; meanwhile, according to the taste sensor, the humanoid robot can test and evaluate the food under the condition that no human testee exists, and the taste sensing system can simulate the function of a human taste sensing system, so that the taste of the food is automatically evaluated.

A method for automatically determining a canonical pose of a 3D object comprises: providing one or more blocks of voxels of a voxel representation of the 3D object to a first 3D deep neural network, the first 3D neural network being trained to generate canonical pose information; receiving canonical pose information from the first 3D deep neural network, the canonical pose information comprising for each voxel a prediction of a position of the voxel in the canonical coordinate system; using the canonical coordinates to determine an orientation and scale of the axes of the canonical coordinate system and a position of the origin of the canonical coordinate system relative to the axis and the origin of the first 3D coordinate system and using the orientation and the position to determine transformation parameters of the first coordinate system into canonical coordinates; and, determining a canonical representation of the 3D dental structure.

A custom tool for forming a dental restoration in a mouth of a patient includes a one-piece mold body providing for a customized fit with at least one tooth of the patient, the one-piece mold body including an occlusal portion forming an occlusal surface corresponding with an occlusal surface of the tooth, a mesial proximal portion forming a mesial proximal surface corresponding with a mesial proximal surface of the tooth, and a distal proximal portion forming a distal proximal surface corresponding with a distal proximal surface of the tooth. The mold body is configured to combine with the tooth of the patient to form a mold cavity encompassing missing tooth structure of the tooth. The occlusal portion, the mesial proximal portion, and the distal proximal portion are based on three-dimensional scan data of the mouth of the patient.

A hardenable (e.g. dental) compositions is described comprising an encapsulated material. The encapsulated material comprises a basic core material and an inorganic shell material having certain viscosity criteria. Also described are dispensing devices and kits are described comprising a hardenable (e.g. dental) composition comprising a liquid material and an encapsulated material wherein the encapsulated material comprises a basic core material and an inorganic shell material comprising a metal oxide surrounding the core. The dispensing devices and kits can facilitate the methods of applying the hardenable composition. The hardenable or hardened (e.g. cured) composition can provide various technical effects such as a delayed release of a basic core material, a delayed increase in basicity, promoting remineralization of a tooth or bone structure, and increasing the average alkaline phosphatase (ALP) activity of pulp cells. In some embodiments, the composition is a dental (e.g. sealant) composition for application to a tooth structure.

The invention relates to the technical field of medical image diagnosis, and discloses a tooth and fracture line recognition treatment method based on the combination of an AI technology and a CBCT image, and the method comprises the steps: obtaining and preprocessing the CBCT image, and carrying out the multi-scale analysis and recognition of a tooth structure, a microcrack and a fracture line through a first AI model. And the second AI model combines the identification result and the patient characteristics, and generates a personalized treatment scheme through multi-objective optimization. Clinical feedback is used for continuously iteratively optimizing double models, and the diagnosis and treatment precision and effect are improved. The system comprises an image data acquisition unit, an image data preprocessing unit, a tooth and fracture line identification unit, a personalized treatment scheme generation unit and a feedback and optimization unit. Through AI and CBCT image fusion, accurate identification of teeth and fracture lines is realized, a personalized treatment scheme is recommended in combination with individual features of a patient and a multi-objective optimization algorithm, rapid response is realized, a closed-loop feedback mechanism continuous optimization model is established, and diagnosis and treatment precision, efficiency and individualization level are remarkably improved.

A dental adhesive material kit may have desirable adhesive properties for tooth structure, and, while ensuring appropriate strength, may allow easy removal of excess cement in a semi-cured state created by temporarily applying light to excess portions of cement with a photoirradiator. Such a dental adhesive material kit may include a dental aqueous adhesive composition (A) and a dental curable composition (B), satisfying the inequality (I)0≤t2−t1≤3.0  (I),wherein t1 (min) is a contactual polymerization start time of the dental aqueous adhesive composition (A) and the dental curable composition (B), and t2 (min) is a polymerization start time of the dental curable composition (B).

The invention relates to the field of dental care, in particular to a tooth polishing agent with an antibacterial effect and a preparation method thereof, and the tooth polishing agent is prepared from the following raw materials: silicon dioxide, sodium carboxymethyl cellulose, xanthan gum, propylene glycol, cocamidopropyl betaine, glycerol, modified nano-zinc oxide, modified nano-hydroxyapatite, glucolactone, stevioside and sodium benzoate. The modified nano-zinc oxide, the modified nano-hydroxyapatite and the glucolactone play a role through a synergistic effect, the modified nano-hydroxyapatite is used as a carrier to adsorb chemical substances such as the modified nano-zinc oxide and the like to form rod-shaped nano microcapsules, and a compact and uniform protective layer is formed on the tooth surface through a nano-size effect; the glucolactone promotes slow release of the rod-shaped nano microcapsules, and the glucolactone, the rod-shaped nano microcapsules and the glucolactone form a dynamic balance system, so that the antibacterial and remineralization effects are continuously exerted, the tooth structure is strengthened, the pH value is adjusted, the oral environment is maintained, and comprehensive and long-acting protection is provided for oral health.

A custom tool for forming a dental restoration in a mouth of a patient includes a one-piece mold body providing for a customized fit with at least one tooth of the patient, the one-piece mold body including an occlusal portion forming an occlusal surface corresponding with an occlusal surface of the tooth, a mesial proximal portion forming a mesial proximal surface corresponding with a mesial proximal surface of the tooth, and a distal proximal portion forming a distal proximal surface corresponding with a distal proximal surface of the tooth. The mold body is configured to combine with the tooth of the patient to form a mold cavity encompassing missing tooth structure of the tooth. The occlusal portion, the mesial proximal portion, and the distal proximal portion are based on three-dimensional scan data of the mouth of the patient.

A hardenable (e.g. dental) compositions is described comprising an encapsulated material. The encapsulated material comprises a basic core material and an inorganic shell material having certain viscosity criteria. Also described are dispensing devices and kits are described comprising a hardenable (e.g. dental) composition comprising a liquid material and an encapsulated material wherein the encapsulated material comprises a basic core material and an inorganic shell material comprising a metal oxide surrounding the core. The dispensing devices and kits can facilitate the methods of applying the hardenable composition. The hardenable or hardened (e.g. cured) composition can provide various technical effects such as a delayed release of a basic core material, a delayed increase in basicity, promoting remineralization of a tooth or bone structure, and increasing the average alkaline phosphatase (ALP) activity of pulp cells. In some embodiments, the composition is a dental (e.g. sealant) composition for application to a tooth structure.

A method for determining a dental condition comprising: receiving at least one volumetric image and at least one intra-oral surface scan image of a dental structure of a patient, wherein the dental structure includes at least one of a crown, root, gingiva or bone; aligning the at least one volumetric image with the at least one intra-oral surface scan image; identifying boundaries of the gingiva and the bone within the aligned images; and calculating distances between the identified boundary of the gingiva and cementoenamel junction (CEJ), the identified boundary of the bone and the CEJ, and the identified boundary of the gingiva and the identified boundary of the bone to determine the dental condition.

The invention provides a model alignment method, device and equipment. The method comprises the following steps: acquiring a tooth model and a face model of a user, wherein the face model comprises a first face model and a second face model; segmenting a first rigid body region in the first face model and a second rigid body region in the second face model; performing point cloud data matching on the second rigid body region and the first rigid body region, and determining a first transformation matrix for aligning the second face model to the first face model; performing point cloud data matching on tooth structure areas of the tooth model and a second face model, and determining a second transformation matrix for aligning the tooth model to the second face model; and aligning the tooth model and the first face model according to the first transformation matrix and the second transformation matrix. By means of the method, the tooth model can be accurately aligned to the face model without tooth structure areas or with few tooth structure areas.

A custom tool for forming a dental restoration in a mouth of a patient. The custom tool includes a facial mold body for a patient-specific, customized fit with the facial side of at least one tooth of the patient, wherein the facial mold body includes a restorative portion, at least one aperture aligned with a portion of a surface of a tooth to be restored and at least one door having an inner surface forming a portion of the mold cavity encompassing missing tooth structure of the tooth to be restored, wherein the door mates with the aperture; a lingual mold body for a patient-specific, customized fit with the lingual side of the tooth of the patient, wherein the lingual mold body includes a restorative portion; wherein the facial mold body and lingual mold body are configured to interlock together; and wherein the facial mold body and lingual mold body are configured to combine with the tooth of the patient to form a mold cavity encompassing missing tooth structure of at least one tooth to be restored.

Dental apparatus, systems, and methods for providing anterior, lateral, and vertical movement, an apparatus including a posterior portion to be affixed to and supported by a posterior dental structure of a patient; and an anterior portion connected to and separable from the posterior portion, the anterior portion operable to provide anterior movement, lateral movement, and vertical movement to an anterior dental structure of the patient.

The present disclosure relates to a system and a method for requesting, processing, and managing dental structures on the basis of OCR. The system according to one aspect of the present disclosure comprises: a first electronic device that recognizes text on a written dental work request on the basis of OCR and transmits a digital dental work request; a server that manages the digital dental work request and transmits the digital dental work request and work information; and a second electronic device that transmits, according to the work information, work completion information with respect to the digital dental work request to the server.

The utility model discloses a toothbrush head which comprises a brush head body, a bristle plate and bristles, a cavity used for containing the bristle plate is arranged in the brush head body, the bristle plate is connected with the brush head body in a clamping mode, the bristle plate can move relative to the brush head body, and the bristles are arranged on one face of the bristle plate. The tooth brush can be efficiently attached to teeth, the contact area of the bristles and the teeth is increased, the tooth structure engineering is met, the tooth brush can penetrate into tooth gaps for brushing, and the cleaning capacity is high. The detachable design is adopted, the dismounting and mounting mode is simple and convenient, one-time dismounting and one-time use are convenient, the sanitation degree of the bristles is improved, and the risk of bacterial and virus infection is reduced.

A non-abrasive oral care composition includes a fragrance for imparting aroma and an additive for imparting additional properties. The oral care composition forms a protective coating on an applied dental structure, the oral care composition further comprises a type of plant-derived anionic surfactant and a type of plant-derived non-ionic surfactant, wherein the type of plant-derived anionic surfactant is sodium cocoyl apple amino acid. Optionally, the oral care composition further comprises a type of plant-derived amphoteric surfactant for stabilizing the composition and enhancing coating and foaming. The composition further includes an essential oil for imparting flavour, a menthol for providing a cooling sensation, and a sweetener for imparting pleasant taste to the composition, and a preservative for preventing the growth of microorganisms.

The invention discloses a dental cast generation method and a nonvolatile storage medium. The method comprises the steps that a first abutment tooth model and an initial tooth model are obtained, the initial tooth model is a tooth model simulating a complete oral cavity structure, and the first abutment tooth model is a model simulating a tooth structure to be repaired; a tool model is determined, the tool model comprises a slot model and / or a second abutment model, the slot model is used for determining a non-segmentation model, the volume of the second abutment model is larger than that of the first abutment model, and the second abutment model is used for determining a segmentation model; the initial dental model and the tool model are subjected to Boolean subtraction operation, a target dental model is obtained, and the target dental model comprises a segmentation model and / or a non-segmentation model. According to the method, the technical problems that the types of models processed by an existing repair model generation method are few, and the model precision is low are solved.

The invention is a coating machine (K) that is designed to eliminate the colour differences that persist on the coated tooth during dental coating processes, to prevent incorrect or incomplete spraying due to the user's control during the formation of the tooth, and to ensure that the resulting tooth structure is fully compatible with the user, comprising at least one body (1 ) to which the elements in said coating machine (K) are connected, a board (6) that is connected to the back of said body (1 ) and provides the electrical energy required for the operation of said coating machine (K), a tooth holding element (7) that is capable of rotating 360°around its own axis and provides the fixation of the dental prosthesis during the coating process, and a rotary table (8) that is connected to said tooth holding element (7) and positioned on said dental prosthesis to enable optical readers to see / analyse the dental prosthesis with its 360° rotation around its own axis.

A comb assembly 10 comprises a tooth structure 100 to receive hair within a passage 110 through the tooth structure, and an actuator system 200 operable to cause the tooth structure to expand the passage and to constrict the passage. The comb assembly further comprises a sensor arrangement 300 including a sensor 310,320 to sense, when hair is held in the passage, a load on the tooth structure indicative of a tensile load exerted by the tooth structure on the hair held in the passage by the tooth structure, and output a sensor signal indicative of the sensed load on the tooth structure. The comb assembly further includes a control module configured to control the actuator system in response to the sensor signal to cause the tooth structure to expand the passage if the sensed load is greater than an upper threshold and to constrict the passage if the sensed load is less than a lower threshold.

A dental composite or coating that comprises at least one photopolymerizable resin, at least one inorganic filler, a photoinitator, and at lease one interference platelet. The dental composite is able to adapt and match the color and shade of adjacent tooth structure in the cavity in which it is placed, without the need for conventional dyes and pigments, although it may be desirable to use dyes and pigments in a specific shade series.

The application discloses a kind of intelligent preparation systems of laser navigation milk teeth root canal, it is related to milk teeth root canal treatment field, including: image processing module, self-checking registration module, structure acquisition module, spectral processing module, anomaly detection module, fusion determination module, compensation tracking module, digital modeling module, simulation learning module, trajectory generation module, execution monitoring module, safety protection module, interactive command module and record audit module;The application can more accurately distinguish infected dentin and healthy dentin, reduce the risk of misjudgment or missing infected areas, effectively reduce the risk of root tip penetration and root tip tissue damage, so that the laser cutting process always revolves around the real infected area, both can fully remove infected tissue, and can maximize the retention of healthy dental structure, improve root canal preparation efficiency and safety, reduce the dependence of doctors on experience judgment, so that milk teeth root canal preparation operation is more standardized and repeatable.

Disclosed is a computer-implemented method for determining and displaying distances between two three-dimensional (3D) models of dental structures, the method comprising the steps of obtaining an active three-dimensional (3D) model of a first dental structure, the active 3D model comprising a plurality of facets describing a surface of the first dental structure in 3D space, obtaining a reference three-dimensional (3D) model of a second dental structure, the second 3D model comprising a plurality of facets describing a surface of the second dental structure in 3D space, setting a first positive threshold value for a maximum relevant distance, generating a first facet search data structure for the reference 3D model using a graphics processing unit (GPU), for each vertex in the active 3D model, determining the distance to the nearest facet in the second reference 3D model up to the threshold value using at least the generated facet search data structure for the reference 3D model and displaying the determined distances in a graphical user interface on a display.

A method for visualizing a dental condition as a gradient color map, comprising the steps of: receiving medical imagery of a dental structure, wherein the dental structure is at least one of a root, crown, or bone; determining a baseline in the received dental structure; determining a measured area of the received dental structure based on the determined baseline; calculating a distance to the baseline based on the determined measured area; visualizing the calculated distance as a gradient color map; and plotting measurement lines by rendering every fragment with a predefined distance value.

This disclosure provides an AI-based system for an intraoral support receptacle (OSR) of an intraoral appliance. The AI-based system comprises an electronic device (ED) and an OSR. The OSR determines whether an intraoral appliance is present inside the OSR and, if an intraoral appliance is present, emits a mist. The OSR captures an image / video of the intraoral appliance and transmits the captured image / video to the ED. The ED receives the captured image / video, uses the image / video to determine the type of intraoral appliance, and uses the image / video to determine at least one feature of the intraoral appliance based on the type. The ED generates a 2D and / or 3D dental structure based on at least one feature of the intraoral appliance and the image / video. The ED uses a trained AI model to compare the 2D and / or 3D dental structure with at least one of historical dental structure images and associated metadata within the ED and provides information about the dental structure data based on the comparison.

Various methods and systems for designing a restored smile are provided. One method includes receiving scan data of a patient's teeth, developing a digital model of the patient's teeth via a computing device, where the model represents the patient's teeth based upon the scan data, creating a dental treatment plan to restore one or more teeth from an initial condition to a successive condition, and wherein a final condition of the one or more is based on the one or more teeth having at least one planned additional restorative tooth structure provided therewith.

The present invention provides a non-abrasive oral care composition comprising a perfume for imparting fragrance and a natural additive for imparting additional properties, the oral care composition further comprising a plant-based anionic surfactant and a plant-based nonionic surfactant, the method is used for forming a layer of protective film on an applied dental structure. Optionally, the oral care composition also includes a vegetable amphoteric surfactant for stabilizing the composition and enhancing the coating and foaming effects. The composition may further include an essential oil for imparting a taste, menthol for providing a cool feeling, a sweetener for imparting a pleasant mouth feel to the composition, and a preservative for preventing growth of microorganisms.

A method for cleaning teeth using a tooth-cleaning device by removing tooth stains uses the following models: a tooth model, which describes the tooth structure of a user, a cleaning model of the particular user, which describes the tooth model by means of a state of staining, an expectation cleaning model, which describes the tooth model by means of an expected state of cleaning, an actual cleaning model, which is measured by means of corresponding sensors, and a cleaning deviation, which is determined by a comparison of the expected cleaning model with the actual cleaning model. The method comprises the steps of: a) determining the cleaning model and the expectation cleaning model; b) performing a cleaning process as defined by the cleaning model; c) determining the actual cleaning model; d) deriving the cleaning deviation from the actual cleaning model and the expectation cleaning model; e) using the actual cleaning model as new cleaning model, determining the expectation cleaning model on the basis of the new cleaning model, and adapting cleaning instructions on the basis of the cleaning deviation; and f) repeating steps b) to e) until a predetermined termination criterion has been reached.

To provide a dental polymerizable composition that enables enhancement of adhesive strength to dentin.SOLUTION: A dental polymerizable composition comprises a monomer liquid containing a non-acidic monomer having an ethylenically unsaturated group and free from acidic groups, and a photoacid generator, the photoacid generator being solid in the monomer liquid and soluble in water.SELECTED DRAWING: None