6 results about "Mandibular teeth" patented technology

The application discloses a 3D printing resin jaw fork fixing method and system for complex dentition patients, relates to the technical field of oral digital restoration, and comprises the following steps: obtaining intraoral scanning data of the dentition patient, extracting mandibular dentition support points, undercut locking areas and dynamic occlusion interference boundaries based on the occlusion point trajectory, establishing a three-dimensional digital model of the mandibular full dentition and occlusion relationship with bearing stability weight and motion avoidance constraints, and performing coordinate unification and assembly gap matching according to the interface specifications of the scanning face bow, the occlusion recorder and the mandibular metal jaw fork to obtain a preliminary docking feature set. The 3D printing resin jaw fork fixing method and system for complex dentition patients improve the accuracy, repeatability and clinical operation efficiency of occlusion recording and mandibular motion analysis of complex dentition patients.

This invention discloses a virtual jawbone simulation method and system based on intraoral 3D scanning, relating to the field of computer simulation. The method includes: acquiring intraoral 3D scanning data and constructing a virtual 3D model of the maxillary and mandibular dentition; collecting intraoral scanning data according to continuous data frames of the user's opening and closing movements, identifying the relative motion information between the maxillary and mandibular dentition during the opening and closing process, and establishing a mapping relationship between opening and closing parameters and intraoral scanning data; constructing a dynamic temporal opening and closing model based on the mapping relationship, and embedding the dynamic temporal opening and closing model into the virtual 3D model to perform dynamic simulation of the maxilla and mandible. This application solves the technical problem of low matching degree between the simulated motion trajectory and the actual physiological movement law of the human mandible in existing jawbone simulations, which makes it impossible to accurately reproduce the dynamic occlusal process. It achieves the technical effect of improving the matching degree between the virtual jawbone simulation motion trajectory and the actual physiological movement law of the human mandible, and accurately reproducing the dynamic occlusal process of the maxilla and mandible.

The invention discloses an improved mandibular protraction position reconstruction appliance, which relates to the field of oral cavity correction, and comprises an upper jaw anchoring assembly and a lower jaw anchoring assembly which are respectively fixed on an upper jaw dentition and a lower jaw dentition and are matched with each other to realize mandibular protraction guidance, the device comprises an upper jaw crown, a buccal tube body and an adjusting component, the upper jaw crown is an unprepared adhesive crown, and the buccal tube body is fixed on the buccal side of the upper jaw crown; the buccal side tube body is a buccal surface square wire tube with a threaded hole formed in the side wall, a locking piece is arranged in the threaded hole, one end of the adjusting part is a square wire end, and the other end of the adjusting part is an arc-shaped end embedded with the lower jaw anchoring assembly; the mandibular anchoring assembly is matched with mandibular posterior teeth and comprises a mandibular crown and an arm-shaped embedding part; according to the appliance, the accurate control and retention of the protraction amount of the lower jaw are realized through the quantitatively adjustable locking mechanism and the unprepared adhesive crown.

A mouth-operated control device comprising an arched casing (10) configured for at least part of the casing (10) to be arranged between a maxillary dentition and a mandibular dentition of the user in an operating position, a first at least bidirectional input interface (21) housed in the concave region of the casing (10) and accessible to the tongue of the user; a second at least bidirectional input interface (22) in the part of the casing (10) intended for being arranged between the maxillary dentition and the mandibular dentition selected to be arranged facing the mandibular dentition of the user, allowing the operation thereof with the relative movement between the maxillary dentition and the mandibular dentition of the user; and a control electronics (30) connected to all the input interfaces (21, 22, 23) for the transmission of control signals to an external device.

A configurable time-delayed oral mandible displacement device includes a top plate configured for engaging maxillary teeth of a user and a bottom plate configured for engaging mandibular teeth of the user. The bottom plate is slidably coupled to the top plate for relative movement between a non-extended position and an extended position for displacing the mandible of the user during sleep. An adjustment mechanism is provided for selectably setting at least an initial position of the bottom plate relative to the top plate, within a predetermined range of initial positions, the adjustment mechanism comprising at least one element fabricated from a shape memory material (SMM).

The invention discloses a jaw position registration method, device and equipment based on multi-dimensional intraoral scanning data, and the method comprises the steps: reading upper and lower jaw scanning data and occlusion record data of a user, and obtaining an upper jaw dentition point cloud, a lower jaw dentition point cloud, a left buccal surface point cloud and a right buccal surface point cloud based on the upper and lower jaw scanning data and the occlusion record data; performing up-down left point cloud registration based on the maxillary dentition point cloud, the mandibular dentition point cloud and the left buccal surface point cloud, performing up-down right point cloud registration based on the maxillary dentition point cloud, the mandibular dentition point cloud and the right buccal surface point cloud, selecting an optimal registration path according to a left path and right path registration result, and obtaining a coarse registration model according to the optimal registration path; and iterating the pose of the degree of freedom of the coarse registration model to obtain a registration model, wherein the occlusion mass fraction Q of the registration model is maximum. The method solves the fundamental problem that the point clouds of the upper and lower jaws have no overlapping area and cannot be registered.