20 results about "Mandibular dentition" patented technology

The application discloses a virtual occlusion detection and design method based on intraoral three-dimensional scanning and relates to the field of oral prosthetics. The application comprises the following steps: acquiring complete upper and lower dental arch data and static occlusion data of a patient in a static state; acquiring a dynamic motion trajectory of teeth by using the static occlusion data to correspond to the position of the teeth in a lower jaw motion in real time; combining the complete upper and lower dental arch data in the static state and the lower jaw motion trajectory to complete motion trajectory integration; drawing a boundary along a crown gum margin and an adjacent contact area in the static dental arch data to obtain a single tooth by segmentation; taking a crown cheek side as a common area, registering the segmented single tooth data to occlusion data one by one to obtain occlusion data after tooth-by-tooth registration; and designing a prosthesis based on the dental arch data and the occlusion data after tooth-by-tooth registration. The application can obtain accurate static and dynamic occlusion data and greatly improves the precision and efficiency of prosthesis design and production through automatic virtual occlusion detection and virtual adjustment.

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.

On one hand, the utility model provides a dental instrument which is U-shaped, the upper side of the dental instrument is provided with a cavity for accommodating the upper jaw dentition of a patient, the lower side of the dental instrument is provided with a cavity for accommodating the lower jaw dentition of the patient, the dental instrument comprises a first section and a second section which are connected along the front-back direction, and the upper side and the lower side of the dental instrument are folded at the first section; the upper side and the lower side of the dental instrument are forked on the second section in the direction from the first section to the second section, and under the action of occlusal force of a patient, the forked part between the upper side and the lower side of the second section of the dental instrument can be reduced, so that rebounding force generated by elastic deformation can lower corresponding teeth of the patient.

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.

This product is an image for setting up the imaging, displaying setting information, and displaying and editing various information acquired by imaging when using an intraoral scanner (a device used primarily for imaging the oral cavity in dental treatment) to photograph the inside of the oral cavity. The "image diagram" shows the state when the upper jaw selection section is selected. When photographing the upper jaw dentition with an intraoral scanner, the imaging is performed with the upper jaw selection section selected. Also, when the upper jaw selection section is selected, information such as the image of the upper jaw acquired by imaging can be displayed in the captured image / various information display section. The "image diagram with the lower jaw selection section selected" shows the state when the lower jaw selection section is selected. When photographing the lower jaw dentition with an intraoral scanner, the imaging is performed with the lower jaw selection section selected. Also, when the lower jaw selection section is selected, information such as the image of the lower jaw acquired by imaging can be displayed in the captured image / various information display section.

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.

The application provides a personalized guide plate and positioning method for maxillofacial nerve three-dimensional navigation, which comprises a fixed part and a navigation part, the fixed part and the navigation part are designed by patient maxillofacial three-dimensional imaging data and 3D integrally printed; the navigation part is provided with a navigation positioning channel corresponding to the patient maxillofacial nerve. The fixed part and the navigation part are integrally printed based on the patient maxillofacial three-dimensional imaging data, so that the fixed part has high compatibility with the patient's maxillary / dental arch form, and the navigation part also has high compatibility with the patient's face, and the setting accuracy of the navigation positioning channel is also higher, so that when the fixed part is placed between the patient's maxillary dental arch and mandibular dental arch and occluded, compared with the conventional simple facial soft tissue fixation method, the navigation positioning channel on the navigation part of the application is more accurate and reliable.

One aspect of the present application provides a computer-implemented method for identifying and aligning teeth in a tooth picture and a panoramic picture, comprising: acquiring at least one tooth picture of a patient, each of the tooth pictures showing a plurality of teeth of a maxillary and / or mandibular dentition of the patient; identifying teeth in each tooth picture by using a trained first deep neural network to respectively obtain a group of tooth masks and a group of tooth numbers; for each tooth picture, extracting a group of tooth features from the tooth picture by using the corresponding group of tooth masks; using a trained second deep neural network to identify teeth in a panoramic film of the patient to obtain a group of tooth masks and a group of tooth numbers; and updating the tooth number corresponding to the tooth picture by using a trained third deep neural network based on the tooth number and the tooth feature corresponding to the tooth picture and the tooth number and the tooth feature corresponding to the panoramic picture, so that the tooth number of the tooth in the tooth picture is the same as the tooth number of the corresponding tooth in the panoramic picture.

On one hand, the utility model provides a dental instrument which comprises a U-shaped base plate, U-shaped grooves capable of containing an upper jaw dentition and a lower jaw dentition are formed in the upper side and the lower side of the U-shaped base plate respectively, elastically-compressible occlusion blocks of a lattice structure are arranged at the positions, corresponding to teeth to be depressed, in the grooves, and under the action of occlusal force of a patient, the teeth to be depressed can be depressed. The occlusion block can be elastically compressed to generate rebound force capable of depressing the tooth to be depressed, the lattice structure can be elastically compressed in the direction of the pressure, and the geometric shape of the lattice structure in the direction perpendicular to the pressure is basically kept unchanged.

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 provides a nest type three-dimensional all-point jaw frame device which is used for transferring the intra-oral jaw biting relation of a patient in complete denture repair and effectively simulating the movement track of a tooth tip staggered position interval of the patient. According to the device, three sectional guide compasses are additionally arranged on an upper jaw body base, and when a lower jaw body base is fixedly connected with a lower jaw branch assembly, two lower jaw branches and a cutting guide rod can be inserted into a corresponding condylar guide nest and a corresponding cutting guide nest to do reciprocating motion along a synchronous groove, and the indexing of the compasses is adjusted; and the operation state of all-directional sliding of the lower jaw dentition on the maxillary surface of the maxillary dentition in-position track can be effectively reflected, so that the movement track of the complete denture in a tooth tip staggered position interval is effectively simulated, and accurate and rapid jaw adjustment is realized. The device can also realize mutual switching between a tooth arrangement mode and a jaw adjustment mode by locking and switching the upper jaw body base and the lower jaw body assembly, and has good functionality and practicability.

On one hand, the utility model provides a dental instrument which comprises a first shell-shaped main body which is an integrated shell and forms a cavity for containing a first dentition of a patient, the first shell-shaped main body is configured to be exposed out of the first shell-shaped main body on the partial surface of the tongue side or the lip-cheek side of a first tooth, and the first dentition is an upper jaw dentition or a lower jaw dentition; a second shell-shaped body, which is an integral shell and forms a cavity for accommodating a second dentition of the patient, the second dentition being a jaw-to-jaw dentition of the first dentition; the first anchoring accessory is convexly arranged on the first shell-shaped main body or the second shell-shaped main body; the second anchoring accessory is mounted on the partial surface, exposed out of the shell-shaped main body, of the first tooth; and the elastic piece is mechanically matched with the first anchoring accessory and the second anchoring accessory to enable the first anchoring accessory and the second anchoring accessory to generate elastic deformation, so that the elastic piece applies correction force to the first tooth through the second anchoring accessory.

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.

A fossa-type three-dimensional omnidirectional jaw position frame device is provided, which realizes mutual conversion between a denture arrangement mode and a jaw position adjustment mode by using lock conversion between a mandibular body base, a mandibular ramus assembly, and a maxillary body base. [Solution] The fossa-type three-dimensional omnidirectional jaw position frame device uses two mandibular ramus synchronization devices to synchronize the two mandibular ramus, and also synchronizes three-dimensional operation by interlocking the incisal rods in the corresponding condylar fossa and incisal fossa, thereby realizing the operating state of the mandibular dentition in the alternating cusp range.

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.

The invention discloses a functional improved bracket-free transparent appliance for class III malocclusion, which comprises an upper jaw appliance body, a lower jaw appliance body and a functional correction structure extending from the upper jaw appliance body and the lower jaw appliance body, and the functional correction structure is correspondingly designed according to the pathogenic characteristics of the class III malocclusion. The functional correction structure of the lower jaw appliance can relieve the forward development limitation of the upper lip on the upper jaw bone, meanwhile, the force of closing the upper lip muscle is transmitted to the lower jaw appliance body, so that the lower jaw bone and the lower jaw dentition generate the overall retreating force, and the functional structure of the upper jaw appliance body can limit abnormal protraction of the tongue of a class III patient. And the effect that the maxillary bone and the maxillary teeth integrally attack forwards is achieved by virtue of the tongue muscle strength. The invisible orthodontic appliance has the advantages that the invisible orthodontic appliance is attractive and comfortable, and each tooth is accurately controlled, the functional structure is modified, the lip and tongue muscle strength in the III-type malocclusion is converted into friends, the treatment period of the III-type malocclusion is shortened, and the treatment effect is improved.

The utility model 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.