9 results about "Mandibular dentition" 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.

One aspect of this application provides a dental instrument comprising a first occlusal module in the form of a U-shaped elongated solid, which is recessed on one side near a first dentition to form a first tooth receiving cavity for receiving a second dentition. The first dentition is a maxillary or mandibular dentition, and the first and second dentitions are opposing dentitions. A first protruding feature is provided within the first tooth receiving cavity. When the dental instrument is in place, the first protruding feature engages with the second dentition to enhance the retention of the second dentition within the first tooth receiving cavity.

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.

This invention discloses a virtual fitting system for dental prostheses based on 3D scanning, belonging to the field of digital dental prosthodontics. It includes a data acquisition module, a trajectory processing module, a model construction module, a fitting simulation module, and an anomaly optimization module. Through 3D scanning and automated point cloud processing, it can quickly acquire high-precision 3D models of the maxillary and mandibular dentition, providing reliable data support for prosthodontic design. Optical motion capture fully reproduces the patient's physiological mandibular movements, overcoming the limitations of existing systems that can only perform static simulations, making occlusal detection more clinically accurate. A unified reference coordinate system is established to achieve precise model registration, controlling prosthodontic positioning errors within 0.01mm, significantly improving fit. It can automatically identify premature contacts and occlusal interferences and perform intelligent optimization of the occlusal surface, replacing repeated manual adjustments, effectively shortening the treatment cycle, improving prosthodontic accuracy and wearing comfort, and enhancing the overall treatment experience.

One aspect of this application provides a dental instrument comprising: a first shell-like body, which is an integral shell forming a cavity for receiving a patient's first dentition, the first shell-like body being configured such that a partial surface of the lingual or labial / buccal side of the first tooth is exposed on the first shell-like body, the first dentition being the maxillary or mandibular dentition; a second shell-like body, which is an integral shell forming a cavity for receiving the patient's second dentition, the second dentition being the opposing dentition of the first dentition; a first anchoring attachment protruding from the first or second shell-like body; a second anchoring attachment mounted on the partial surface of the first tooth exposed on the shell-like body; and an elastic member that mechanically engages with the first and second anchoring attachments to elastically deform, thereby applying an orthodontic force to the first tooth through the second anchoring attachment.

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.

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.

The invention relates to a mandibular advancement device with a stabilizing structure. The mandibular advancement device comprises an upper tray assembly and a lower tray assembly, wherein the upper tray assembly is formed by an upper moldable part and an upper support, and the lower tray assembly is formed by a lower moldable part and a lower support. The front side edges, close to the lip side, of the upper support and the lower support extend to form a front wall, and at least the rear side edge, close to the tongue side, of the lower support extends to form a rear wall on the median sagittal plane. The stabilizing structure enables at least the front wall of the upper support to incline towards the lingual side and is used for being attached to the maxillary dentition when the patient is shaped. The rear wall of the lower support and the front wall clamp the mandibular dentition together and also have the function of preventing the lower moldable component from sliding off. In some cases, the stabilizing structure further comprises a molar clamping part, the molar clamping part at least comprises a front wall and a rear wall at the contact position of the upper bracket and the molar, and the mandibular advancement device is more stable through the design of the front wall and the rear wall of the part. The lower jaw advancing device is further provided with protrusions on the upper support and the lower support.