23 results about "Occlusal plane" patented technology

The invention discloses a three-dimensional stomatognathic model reconstruction system based on multi-modal data fusion. The system comprises a multi-modal data input unit, a template deformation reconstruction unit, a registration fusion unit, a multi-source data integration unit and an output unit. Through fusion processing of a CBCT image, an oral cavity vision measurement model and facial scanning data, a body deformation algorithm is adopted to couple biomechanical characteristics to realize craniojaw template deformation, and a non-rigid ICP algorithm is combined for dynamic regulation and control to realize facial template adaptation. A deep neural network is innovatively constructed to segment CBCT gingival data, the CBCT gingival data is fused with an oral cavity vision measurement model, and high-precision tooth reconstruction is realized by applying a differential geometry multi-scale curvature field segmentation and adversarial edge optimization technology. Through a composite registration strategy combining adaptive rigid registration and non-rigid registration, an occlusal plane constraint mechanism and an orbital curvature extreme point matching algorithm are innovatively introduced, finally, multi-source data high-precision registration fusion is realized, and a three-dimensional oral-jaw system model with anatomical structure integrity and clinical precision can be generated.

A series (100) of devices for assisting in the displacement of the chewing plane of a person (P) is explained, comprisingat least two devices (10),wherein the devices (10) each comprise at least one jaw device (11, 12),wherein the at least one jaw device (11, 12) comprises an upper jaw device (11) and / or a lower jaw device (12),and wherein the devices (10) are designed to be worn by the person (P) according to a predetermined sequence.In at least one device (10.1, 10.2), the at least one jaw device (11, 12) comprises at least one height element on a first side. At least two contact areas, preferably local contact areas, are formed on the at least one height element at mutually different positions of molar elements. At least one further contact area is formed on a second side of the at least one jaw device (11, 12), in particular a further local contact area. The at least three contact areas define the plane (GE),wherein the plane (GE) deviates from a starting chewing plane of the person (P) or from a current chewing plane of the person (P) with respect to its inclination changed by the at least one height element in a frontal section or sagittal section and / or deviates with respect to its height position changed by the at least one height element, andwherein in at least one other device of the series (100) a different inclination in a frontal section or sagittal section and / or a different height position of the respective plane is adjusted by at least one further height element, which differs from the at least one height element in the adjusted height.

The present disclosure discloses full-mouth zirconia implant method and system for full mouth reconstruction using one-piece ceramic zirconia dental implants. The full-mouth zirconia implant method comprises acquiring analog and digital impressions of tooth of patients; fabricating a temporary restoration based on acquired impressions; adapting medical professionals for administering anesthesia to the patients; placing the one-piece ceramic zirconia dental implants in a jaw of the patients; preparing at least four unextracted tooth for anchoring temporary restoration; anchoring and seating the temporary restoration on at least four unextracted tooth for avoiding premature contact with abutments of one-piece ceramic zirconia dental implants; initiating prosthodontic phase after healing period upon performing post-operative care; assessing smile of patients to determine whether an occlusal plane is parallel to a line connecting a tragus of an ear to an ala of nose of the patients; and placing a final restoration for the full mouth reconstruction.

A maxilla holder includes a base plate and a connecting member. One end of the connecting member is connected with the base plate which extends along a pre-designed occlusal plane while the other end of the connecting member includes at least two supporting portions. With the supporting portions abutting against the cranium, the base plate is positioned so that the maxilla is located in a pre-planned position once it is moved onto the base plate.

The invention relates to a device for capturing images of a patient's teeth, the device comprising a main body (10), a lower protective shell (20) and an upper protective shell (30), the main body (10) comprising a handgrip portion (11) and a head portion (12), the head portion (12), when arranged in the mouth of a patient, covering all the teeth of a lower or upper set of teeth, the head portion (12) comprising a plurality of cameras (15), the lower protective shell (20) being removably attached beneath the head portion (12), the lower protective shell (20) being located on the front side of the cameras (15), the upper protective shell (30) being removably attached to the head portion (12), the upper protective shell (30) being located on the rear side of the cameras (15), all the cameras (15) being arranged in one and the same plane (P), and all the cameras (15) being oriented in one and the same direction toward the occlusal plane, and the lower protective shell (20) comprising a plurality of mirrors (25, 25', 25'') for generating viewpoints different from the direct viewpoint of each camera (15).

The invention provides a denture manufacturing method and system for assisting standardized tooth arrangement by using digitization, and the method comprises the steps: deleting digitized non-target teeth according to digitized target teeth in a digitized full-mouth model of the arranged teeth, and obtaining a digitized target full-mouth model, wherein the digital target teeth are arranged according to a designed tooth arrangement center line and an occlusion plane; designing a digitized base on the digitized target full-mouth model, and combining the digitized base with the digitized target teeth to obtain a digitized base assembly; a physical denture assembly is manufactured according to the digital denture assembly, the physical denture assembly comprises a physical target tooth, and the physical target tooth corresponds to the digital target tooth; and performing manual tooth arrangement on the real object base plate assembly based on the tooth arrangement center line and the occlusal plane determined by the real object target tooth. The problems that in the prior art, full-manual tooth arrangement standards are difficult to unify, so that the product quality is uneven, and the product quality is not easy to control are solved.

This orofacial myofunctional rehabilitation splint is characterized by a lower vertical outer wall (2) with a reduced height of 2 or 3 mm at most, allowing the resting pressure of the orbicularis oris muscle to be exerted on the mandibular alveolar arch. This feature helps prevent, or even reduce after an interceptive treatment phase, unwanted labial tipping of the mandibular incisors. This splint is further characterized by a tongue ramp (3) without a wall along the lingual edge of the upper part of the occlusal plane (8). The tongue ramp (3) thus continues laterally with the occlusal plane (4) via a rounded edge (8). This feature induces passive elevation and propulsion of the tongue, which is accompanied by an opening of the upper airways and helps to reduce snoring and retrain swallowing.The tongue ramp (3) is extended anteriorly by an anterior guide for the tip of the tongue (9). This guide is specifically designed to lift and guide the tip of the tongue forward and upward, ensuring its proprioceptive contact with the retro-incisive papilla, in order to open the upper airways and promote the rehabilitation of swallowing and resting tongue posture. The device according to the invention is particularly intended for the rehabilitation of breathing, swallowing, and tongue posture; the improvement of obstructive sleep-disordered breathing, particularly snoring; and the improvement of dental occlusion.

Techniques for aligning three-dimensional data of an oral cavity with an occlusal plane are disclosed. According to one aspect of the present disclosure, a method performed by an electronic device may comprise the steps of: acquiring first data, the first data being three-dimensional data of an oral cavity comprising a plurality of teeth; determining a three-dimensional center coordinate of each of the plurality of teeth indicated by the first data; determining one or more target teeth in the plurality of teeth; determining one or more reference center points respectively corresponding to one or more target teeth on an occlusal plane for aligning the plurality of teeth; and generating a transformation matrix for aligning the first data with the occlusal plane based on the three-dimensional center coordinate of each of the one or more target teeth and the one or more reference center points.

The application discloses a kind of occlusion process tooth abutment area gap detection method and system, belong to stomatology field, specifically include: collection detector mouth inlay area target tooth crown three-dimensional surface data and three-dimensional cheek side occlusion data;The three-dimensional scanning data described above is handled to obtain inlay area crown three-dimensional surface data after occlusion;Fusion the inlay area crown three-dimensional surface data before occlusion and the inlay area crown three-dimensional surface data after occlusion, obtain inlay area before and after occlusion tooth abutment area gap change feature;Obtain the abutment area gap of inlay area before and after occlusion tooth or non-inlay area before and after occlusion tooth before and after occlusion.The application carries out early data collection using mouth three-dimensional scanning technology, then combines area-line-point-line-area data processing process, accurately extracts the abutment area gap of adjacent tooth in mouth before and after occlusion Change feature, with quantifiable, repeatability, objectivity and the like features.

This invention relates to the field of oral medicine technology, and particularly to a method and system for automatic full-mouth tooth arrangement based on occlusal plane feature points. The method involves acquiring dental model information, scanning and automatically arranging teeth from both the upper and lower jaws, further acquiring the centroid coordinates of each tooth, the first limiting distance for each tooth, the feature points on each tooth surface, and the set allowed movement direction; pairing the upper and lower jaw teeth; aligning the z-axis of the centroid coordinates of each tooth pair; performing coarse registration of the tooth pairs based on the first limiting distance and the allowed movement direction; and completing fine registration of the upper and lower jaw teeth by constructing an objective function based on the point cloud data of the two teeth in the tooth pair. An objective function is also constructed based on the alveolar ridge crest line and the minimum distance between two adjacent teeth in the same jaw to optimize tooth arrangement. This invention prioritizes perfect occlusion of tooth pairs while optimizing tooth arrangement, improving the aesthetics and neatness of the tooth arrangement result.

The application belongs to the technical field of medical oral cavity repair, and discloses a digital-based oral cavity occlusion reconstruction method, device, equipment and storage medium. The method comprises the following steps: acquiring head CBCT data and oral cavity data of a current patient, and establishing a skull model; marking key information points on the skull model to generate marking information; performing data analysis on the marking information to obtain key occlusal surface information; determining occlusal plane position information according to the key occlusal surface information; establishing an occlusion reconstruction model according to the occlusal plane position information; simulating occlusion movement according to the occlusion reconstruction model to obtain a simulation result; when the simulation result does not conform to a preset abnormal scene, determining that the occlusion reconstruction model is a target occlusion reconstruction model; and performing cutting processing according to the target occlusion reconstruction model to obtain a denture prosthesis of the current patient. In the above manner, the fitting accuracy of the denture prosthesis is improved, the process flow is saved, and the production speed of the denture prosthesis is accelerated.

The invention relates to the technical field of image processing, and discloses a dental three-dimensional digital model coordinate system analysis method, device, equipment and medium, and the method comprises the steps: obtaining a dental three-dimensional digital model of a target user, calculating an occlusal plane of a dental region in the dental three-dimensional digital model, and extracting a normal vector of the occlusal plane; mapping a single jaw model in the dental three-dimensional digital model into a dental projection depth map according to the occlusal plane and the normal vector; extracting multi-scale depth features of the tooth jaw projection depth map, and performing pooling operation on the multi-scale depth features to obtain a tooth jaw type; performing up-sampling fusion on the multi-scale depth features to generate a two-dimensional key point heat map; calculating a dental region direction vector of a target tooth in the dental three-dimensional digital model according to the dental type and the two-dimensional key point heat map; and determining a dental coordinate system of the dental three-dimensional digital model according to the dental region direction vector, the normal vector and the dental type. And the accuracy of coordinate system analysis of the dental three-dimensional digital model is improved.

The utility model discloses a digital Gothic bow device which comprises an upper jaw bow matched with the upper jaw of a patient and a lower jaw bow matched with the lower jaw of the patient, and the upper jaw bow and the lower jaw bow are detachably provided with an occlusion piece used for obtaining a closed impression or a tracing piece used for obtaining the median jaw position relation. At least one of the maxillary arch and the mandibular arch is adjusted, that is, the inside of the mouth of a patient is adjusted according to clinical practice, and a correct jaw plane is obtained. A jaw plane is used as a reference and matched with the occlusion pieces, the closed impression of a patient is obtained through closed occlusion of the patient, the patient occludes in a closed mode and is in a correct occlusion relation, the upper occlusion piece and the lower occlusion piece make close contact, the more accurate closed impression is obtained, and the edge of the occlusion relation position is more accurately shaped. And by matching with a tracing piece, the median jaw position relationship of the patient is accurately obtained, the problem of equally dividing the occlusion gap according to personal experience is solved, and the jaw position relationship better conforms to the actual occlusion condition of the patient.

The invention relates to the field of image processing, in particular to a tooth occlusion feature analysis method based on image processing. Comprising the following steps: acquiring and preprocessing an oral cavity image to obtain a preprocessed oral cavity image; based on the preprocessed oral cavity image, calculating a gradient magnitude and a gray histogram, determining an occlusion plane, and dividing the tooth boundary point set into an upper tooth contour point set and a lower tooth contour point set according to the occlusion plane; determining an upper and lower tooth contour contact point pair set based on the upper and lower tooth contour point set; and introducing an occlusion geometric feature quantification algorithm to extract a weighted pressure distribution coefficient and a contact point density coefficient, comparing the weighted pressure distribution coefficient and the contact point density coefficient with a clinical standard value range based on an orthodontic clinical database, analyzing whether the tooth occlusion state is normal, and generating a diagnosis report. The technical problems that upper and lower teeth and an occlusal plane are difficult to accurately distinguish by a traditional oral image processing method, and particularly under noise interference, identification of tooth boundaries and occlusal wax areas is easy to make mistakes, so that deviation of subsequent occlusal analysis is caused are solved.

The utility model provides an accessory structure for invisible correction, which comprises an accessory body fixedly arranged on a dental surface, and the accessory body is T-shaped and / or L-shaped. The T-shaped accessory body comprises a vertical arm and a horizontal arm, the vertical arm is fixed with a tooth surface and forms a moment fulcrum on a gingival side / a coronal side, the horizontal arm is fixedly arranged at one end of the vertical arm and extends in a near-far middle direction to generate a bidirectional lever effect, and a connecting part is arranged at the joint of the vertical arm and the horizontal arm; the L-shaped accessory body comprises a long arm leading stress conduction in the horizontal direction and a short arm fixedly connected with one end of the long arm and used for limiting in the vertical direction, the problem of dentition adduction of a protuberant surface type is solved, occlusal plane adjustment is achieved through the synergistic effect of the accessory body and an implant anchorage, and the effect of improving the surface type of a patient is achieved.

The invention discloses an intelligent tooth arrangement method. The method comprises the following steps: acquiring a dentition three-dimensional model; configuration data is obtained, and the configuration data comprises target anterior tooth cutting edge point coordinate information, a defined target occlusal plane and posterior tooth axis inclination vertical constraint information; path planning is executed based on the configuration data so as to determine a tooth arrangement target position of a tooth model on the dentition three-dimensional model, and the preset tooth arrangement rule is used for constraint in the path planning. Through intelligent tooth arrangement, the tooth arrangement efficiency and the adaptation degree with different users are improved.

The invention discloses a child occlusal pad, a child occlusal correction system based on adaptive occlusal and a design method thereof.The child occlusal pad comprises two bodies, the two bodies are configured to cover the left rear tooth area and the right rear tooth area of the upper jaw / lower jaw of a wearer, and the two bodies are connected through a connecting part; the body comprises an occlusal surface facing a jaw dentition and a tissue surface facing a dentition covered by the occlusal surface; the tissue surface is provided with an eruption nest for accommodating target teeth; the eruption nest is defined by a side wall and a nest bottom wall matched with an occlusal surface of a target tooth, and the side wall extends around a guide axis; wherein the body is configured to be in a wearing state, the guide axis has a preset deflection angle relative to a vertical line of a palate plane of a wearer so as to guide eruption of target teeth through the direction of the guide axis; the pit bottom wall of the germination pit has a preset thickness measured in the direction of the guide axis. The children occlusal correction system provided by the invention not only can improve retention force, but also can actively guide teeth to directionally germinate according to the occlusal type and remodel a functional occlusal plane, so that jaw malformation is corrected by eliminating an inward rotation / outward rotation mechanism of the lower jaw.

The invention relates to the technical field of dental restoration, in particular to a digital complete denture manufacturing method based on a surface scanning calibration occlusal plane and related equipment. The method comprises the following steps: performing three-dimensional reconstruction on a maxillofacial surface of a target object based on oral cavity scanning data and face scanning data to obtain a maxillofacial surface three-dimensional model; the maxillofacial three-dimensional model comprises a face three-dimensional area and an oral cavity three-dimensional area; determining a first occlusal plane in the oral three-dimensional area by taking the oral anatomical mark point as a reference; determining a face reference line according to the face three-dimensional area; and calibrating the first occlusal plane according to the facial reference line to obtain a second occlusal plane, and modeling an upper jaw denture and a lower jaw denture along the second occlusal plane. According to the method, the second occlusal plane can be obtained through automatic calibration of the face reference line, digital modeling of the upper jaw denture and the lower jaw denture is performed on the second occlusal plane, the occlusal plane does not depend on manual confirmation through a traditional occlusal support, and intraoral operation steps during denture repair are reduced.

The present invention provides a method for designing and manufacturing an integrated hollow closed obturator through 3D printing, which relates to the field of dental technology. The manufacturing method comprises: obtaining a digital model of the patient's dentition and jaw defect area through an intraoral scanner; designing an obturator based on the digital model through a first digital design software to obtain an initial digital model of the obturator; adjusting the position of the initial digital model of the obturator through a second digital design software so that the occlusal plane of the initial digital model of the obturator is parallel to the XY plane, and the tissue surface of the initial digital model of the obturator faces the positive direction of the Z axis. By combining the interlayer pause method with the bottom-up 3D printing method, liquid resin residue in the hollow obturator cavity is avoided, and the direct 3D printing production of the integrated hollow closed obturator can be achieved, providing an effective solution for the direct 3D printing production of hollow structures.

A process for manufacturing an orthodontic device includes scanning at least a part of a patient's dentition so as to record a volumetric 3-dimensional scan data, and segmenting the scan data so as to obtain individual teeth and / or jaws. A tooth main axis is determined for each tooth in order to obtain a two-dimensional key point representation of each tooth in the occlusal plane. An even order parametric polynomial curve is fit to approximate the dental arch. The even order polynomial curve is transformed into a spline representation. One or more 2-dimensional cuts through the volumetric 3-dimensional digital scan data is selected, wherein at least one size dimension of a tooth is determined from the 2-dimensional cut. An orthodontic device is manufactured, wherein at least one size dimension of the orthodontic device is a function of the size dimension of the tooth.

An occlusal plane suggestion method according to an embodiment of the present invention comprises the steps in which: (a) an occlusal plane suggestion device receives at least one of first to fourth data for a person with normal occlusion and matches same to generate IVth image data; (b) the occlusal plane suggestion device analyzes the generated IVth image data to learn the relationship between a landmark, which is an anatomical singularity, and the occlusal plane of the person with normal occlusion; (c) the occlusal plane suggestion device receives at least one of first to fourth data about a patient; and (d) the occlusal plane suggestion device analyzes the received at least one of the first to fourth data about the patient on the basis of the learned relationship between the landmark and the normal occlusal plane to suggest and output an occlusal plane optimized for the patient.

The application discloses a kind of whole translation correcting device of maxillary anterior teeth, it includes the connecting body being connected with target anterior teeth, the force transmission arm extending to the palate of the two ends of connecting body, the guide rod being fixedly connected with force transmission arm, the U-shaped frame being fixedly connected with palate and the positioning tube being fixedly connected with the two ends of U-shaped frame.The traction hook is provided on the force transmission arm, the hanging part is provided on the U-shaped frame, and the force applying member is connected between the two;The guide rod is provided in the positioning tube and is slidably connected with it.The core is that the axial center line of guide rod and positioning tube is parallel to maxillary occlusal plane and maxillary dentition sagittal section;The distance from the line connecting traction force action part on traction hook and hanging part to maxillary occlusal plane is equal to the distance from the impedance center of target anterior teeth whole translation to maxillary occlusal plane.The technical scheme can ensure that the correction force passes through the impedance center, so as to realize the pure whole translation of anterior teeth, effectively prevent inclination and left-right rotation, and the limiting structure for preventing excessive backward movement of teeth is provided, so as to improve the controllability and safety of treatment.

This invention relates to the field of image data processing technology and discloses an intelligent detection method and system for dentofacial deformities based on multimodal data. The method includes: acquiring three-dimensional skeletal data of the first modality and two-dimensional facial data of the second modality of the target object; extracting a set of skeletal feature points from the three-dimensional skeletal data; calculating a spatial mapping matrix and mapping the set of skeletal feature points to a two-dimensional plane according to the spatial mapping matrix to generate an anchor point mask matrix; obtaining an aligned facial feature tensor; performing planar fitting calculation on the target tooth coordinate set to obtain an occlusal plane normal vector; generating soft tissue deformation parameters; obtaining a fusion feature vector; and inputting the fusion feature vector into a pre-trained deformity classification network to output a deformity category label. This invention improves the accuracy, intelligence, and versatility of dentofacial deformity detection and achieves efficient identification of deformity categories.