66 results about "Entire mouth" patented technology

The invention discloses a high-precision and automatic dental crown generation method. The method comprises seven steps of oral cavity three-dimensional data acquisition, full-mouth tooth semantic segmentation, upper and lower jaw point cloud precise registration, abutment and associated gingiva precise segmentation and trimming, abutment surrounding environment multi-tissue segmentation, neck-edge line secondary precise detection, and dental crown generation and multi-dimensional refinement. The method comprises the steps of oral cavity three-dimensional data acquisition, full-mouth tooth semantic segmentation, upper and lower jaw point cloud precise registration, abutment and associated gingiva precise segmentation and trimming, abutment surrounding environment multi-tissue segmentation, neck-edge line secondary precise detection and dental crown generation. Through combination of deep learning and a point cloud algorithm, high-precision segmentation of teeth and gingiva and precise reduction of an occlusion relationship are realized, an oral anatomical feature library and a clinical repair standard are fused, and through multi-dimensional fine adjustment optimization, a dental crown 3D model which is high in fitting degree, harmonious in occlusion and capable of meeting clinical requirements is generated. The method is full-process automatic, greatly improves efficiency, reduces operation threshold, reduces material waste and diagnosis and treatment cost, remarkably improves repair success rate, and is suitable for various oral repair scenes.

The invention discloses a tooth instance segmentation method and device based on anatomic form priori, and belongs to the field of computer vision and artificial intelligence. According to the method, model training is carried out on a CBCT image, a real segmentation mask is processed into a three-classification segmentation mask with enamel as a boundary, the three-classification segmentation mask serves as a supervision signal, a network can directly output a prediction segmentation mask containing tooth boundary information in a reasoning stage, and a detection frame is generated accordingly. And after the detection frame is scaled according to the same proportionality coefficient and projected back to the original image, cutting each tooth to obtain a CBCT image of the single tooth. A loss function based on anatomical morphological prior is introduced into segmentation training of a single tooth CBCT image, and a network is constrained through a self-adaptively extracted morphological skeleton, so that a prediction segmentation mask is kept continuous at a root tip part, and the problem of tooth root segmentation fracture is effectively relieved. According to the method, accurate positioning and high-quality segmentation of the tooth instances are realized, so that the segmentation of the tooth instances in the full-mouth CBCT image is quicker and more accurate.

The present invention relates to methods for curing polymeric dental appliances comprised of partially cured photopolymerizable components, especially for additively manufactured denture base and artificial tooth components utilized in the production of full and partial dental prostheses. In particular, the invention relates to methods of utilizing a curing apparatus having one or more controllable heating sources and one or more controllable LED light sources to achieve specific preheating and light curing conditions for more effectively converting partially cured photopolymerizable components from a partially cured state to a final cured state.

The utility model discloses a digitized combined guide plate for complete implantation, which relates to the technical field of dental operation tools, and comprises a retention nail guide plate and an implantation guide plate, the implantation guide plate is detachably connected with the retention nail guide plate, the retention nail guide plate is annular and is arranged around an alveolar bone, and the implantation guide plate is used for fixing the alveolar bone. A reserved gap for accommodating gingiva is formed between the planting guide plate and the inner edge of the fixing nail guide plate; in the operation process, the gingiva after flap turning can be placed in the reserved gap, fixation of the gingiva is completed, the gingiva cannot hinder installation of the planting guide plate, the accuracy of installation of the guide plate is improved, the gingiva is kept in the form of turning out towards the peripheral side, the operation area cannot be shielded, the exposure effect of the operation area is improved, the operation view is clearer, and the operation efficiency is improved. And meanwhile, the possibility that a machine needle may damage gingiva during implant hole preparation is reduced, cooling saline water can accurately reach the drilling part to cool the drilling part under the condition of no gingiva shielding during an operation, and the success rate of the operation is improved.

The invention discloses a tooth wear evaluation model for evaluating the safety of oral products and a preparation method and application thereof. The tooth wear evaluation model is at least obtained by grinding and polishing the surface of a tooth model, and the tooth model comprises at least one of an animal enamel block model, an animal dentin block model, a tooth-like material dental film model, a full-mouth animal enamel model and a tooth-like material full-mouth tooth model. According to the tooth wear evaluation model, the wear performance of the oral product can be conveniently tested in vitro.

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.

This invention discloses an automated anterior tooth feature parameter extraction method and evaluation system based on computer vision, comprising: acquiring and visualizing a full-mouth scan image of a patient to be processed; cropping the corresponding tooth portion image; using Gaussian blur to eliminate specular reflection; using color segmentation to set thresholds for the H, S, and V channels respectively; separating the teeth and gingiva in each tooth portion image and performing morphological processing on each; extracting the tooth and gingiva portion contours using contour extraction methods; further refining the segmentation accuracy using the Chan-Vese active contour model algorithm and the energy function within the tooth portion contour; extracting corner points using the Shi-Tomasi corner detection method and then clustering them; extracting other important evaluation feature points through curve fitting and extreme value finding methods; and finally calculating relevant objective indicators for tooth evaluation and automatically generating the corresponding tooth score, thus completing the automated anterior tooth evaluation.

This invention discloses a personalized Gothic arch component for dental implant restoration and a method for determining digital jaw position relationships, belonging to the field of medical device technology. The component includes a mandibular tracing needle fixation bracket, a tracing needle, a maxillary Gothic arch tracing plate, and fixing screws. The mandibular tracing needle fixation bracket comprises a Y-shaped tracing needle positioning frame and a personalized implant fixation bracket. The tracing needle is fitted into the central groove of the mandibular tracing needle fixation bracket via a shaft-hole fitting structure. The maxillary Gothic arch tracing plate is U-shaped and adapts to the maxillary dental arch. Both the mandibular tracing needle fixation bracket and the maxillary Gothic arch tracing plate are provided with screw channels for matching fixing screws. The method for determining digital jaw position relationships includes: taking a digital impression; designing and 3D printing the above components using CAD / CAM; determining the vertical distance and centric relationship using the personalized Gothic arch; and transferring the maxillary-mandibular relationship for edentulous full-mouth implant restoration based on occlusal records and electronic facebow data, thereby improving the clinical applicability of the restoration.

The present invention discloses a full-mouth implant opener, comprising: a maxillary support groove, a mandibular support groove, a first connection part and a second connection part; the first end of the maxillary support groove is connected to the first end of the mandibular support groove through the first connection part; the second end of the maxillary support groove is connected to the second end of the mandibular support groove through the second connection part; when in use, the maxillary support groove is sleeved on the maxillary alveolar ridge, abuts against the maxillary alveolar ridge, and exposes the alveolar ridge top of the maxillary alveolar ridge; the mandibular support groove is sleeved on the mandibular alveolar ridge, abuts against the mandibular alveolar ridge, and exposes the alveolar ridge top of the mandibular alveolar ridge. The opener provided by the present invention fits with the corresponding soft tissue in the oral cavity and avoids the surgical area, and the soft tissue is opened away from the surgical area, and the surgical field of view will not be blocked, which greatly improves the convenience of the operation.

The utility model discloses a multipurpose measuring scale for dental diagnosis and treatment, which comprises a measuring scale body and a sliding component, the measuring scale body comprises a horizontal scale, a Y-shaped fork, a side arm and a side stick, the Y-shaped fork is fixed at the upper end of the horizontal scale, and the sliding component comprises a measuring scale sliding block and a sliding block locking screw. The measuring scale sliding block comprises a measuring scale sliding block component A, a measuring scale sliding block component B, a measuring scale sliding block component M and a sliding block assembling screw. The multifunctional measuring device is a single multifunctional measuring device for measuring the length and width of a dental arch, the occlusion horizontal plane of a false tooth, the vertical suction distance, the size of the tooth, the size of an interdental space and the like, and plays an important role in the diagnosis and treatment processes of complete false teeth, immediate false teeth, movable partial false teeth, complete reconstruction, implant support false teeth or fixed complete dental arch repair; the novel multifunctional measuring scale is used for replacing various traditional measuring tools, so that the tool types in dental diagnosis and treatment are greatly simplified.

The invention relates to the technical field of medical instruments, and discloses a full-mouth glue support curing box which comprises a box body, a false tooth clamping seat and a curing lamp, sliding grooves are symmetrically formed in the inner walls of the two sides of the box body, bearing plates are slidably connected to inner cavities of the sliding grooves, connecting plates are fixedly connected to the two sides of each bearing plate, and a plurality of gear teeth are arranged at the bottoms of the connecting plates; a through groove is formed in the middle of the bearing plate; the opening side of the box body is rotationally connected with an overturning plate through a fixing plate, the inner side of the overturning plate is fixedly connected with a gear, and the gear is meshed with the gear teeth; a limiting structure used for limiting the sliding stroke of the bearing plate is arranged on the inner wall of the sliding groove, and through a linkage structure of the overturning plate and the bearing plate, the bearing plate is driven to extend outwards when the door is opened through overturning, when the overturning plate rotates, the gear and the gear teeth are meshed to drive the bearing plate to extend outwards along the sliding groove, the bearing plate extends out of the box body by a certain distance, and the through groove can be conveniently exposed; a user can conveniently stretch the bearing plate through the through groove, and the glass cup is taken and placed above the bearing plate.

The present application relates to a kind of full mouth universal dental auxiliary punching guide plate and its using method, dental auxiliary punching guide plate includes clamping part and alignment part, the clamping part includes top surface guide plate, lingual guide plate and labial guide plate, the top surface guide plate is plane circular arc, the lingual guide plate is set in the inside of the top surface guide plate, the labial guide plate is set in the outside of the top surface guide plate, multiple first and last opposite settings but not intercommunication arc-shaped through holes are equipped on the top surface guide plate, the alignment part can be moved along corresponding arc-shaped through hole;The alignment part includes moving plate and guide pipe, one end of the guide pipe sequentially passes through the guide pipe hole, the arc-shaped through hole and extends to U-shaped groove.This full mouth universal dental auxiliary punching guide plate provided by the present application is simple and easy to operate, and low in cost;It is strong in universality, and can be applied to most people's implant teeth.

Methods for a personalized root-shaped implant are disclosed. The method for generating a personalized root-shaped implant model includes capturing a CBCT image of a missing teeth area of a patient; performing image segmentation and model reconstruction on the CBCT image and obtains a full-mouth original teeth model; selecting a target tooth model from the full-mouth original teeth model; and processing the target tooth model in a preset strategy such that the personalized root-shaped implant model is generated.

The utility model relates to the technical field of tracheal catheter ventilation equipment, in particular to a device for preventing mask pressurization ventilation air leakage of a patient with complete tooth loss, an oral cavity support body is of a semicircular body structure and is placed in the oral cavity to support the cheek, and a tracheal catheter through hole is formed in the front end of the oral cavity support body; sputum suction tube through holes are formed in the two sides of the tracheal catheter through hole. The utility model has the beneficial effects that the oral cavity support body can support the cheek, the air leakage condition of the mask is avoided, the tracheal catheter passing hole arranged on the oral cavity support body can stably fix the tracheal catheter, the sputum suction tube passing holes arranged on the two sides can conveniently suck sputum, and the tracheal catheter passing hole is arranged on the other side of the oral cavity support body. The sputum suction tube can be prevented from being blocked by the tongue, and gingiva of a patient can be protected through gingiva protection grooves formed in the upper portion and the lower portion of the oral cavity supporting body.

The invention relates to an improved guide splint (1) for dental procedures in fully or partially edentulous patients, having a lower face (1a) with an anatomical shape designed to rest on a jaw of the patient and comprising at least one through hole (2) configured to serve as a reference for a dental procedure. The splint (1) of the invention also comprises at least one recess (3) on the lower face of same configured for snap-fit engagement with at least one lug (T) protruding from the gum.

The utility model provides a brace-shaped magnetic resonance oral cavity wireless coil and magnetic resonance imaging equipment. The magnetic resonance oral cavity wireless coil comprises a plurality of wireless resonant rings and a flexible substrate, each wireless resonant ring is of a flexible loop structure, the wireless resonant rings are arranged in an array mode, every two adjacent wireless resonant rings are coupled, the wireless resonant rings are used for receiving magnetic resonance signals, the wireless resonant rings are arranged on the flexible substrate, and the flexible substrate is arranged on the flexible substrate. The flexible substrate is used for being attached to an oral cavity area. The unique tooth socket-shaped structure is tightly attached to oral anatomy, the sensitivity is high, upper and lower dentitions can be imaged at the same time, full-oral scanning is achieved, the process is greatly simplified, the coil has ultrahigh resolution and excellent signal-to-noise ratio, dental crowns, root canals and periodontal tissues can be accurately captured, and excellent soft tissue contrast is provided. The compact and high-adaptability design gives consideration to the comfort and diversified requirements of the patient.

The present invention provides a dental tray for making an initial impression of an edentulous jaw, the dental tray comprising: a body provided with a plurality of through holes for fixing an impression material; the handle is connected with the body; wherein the body is similar to an anatomical part in an oral cavity in shape. According to the method, the applicability, the universality and the accuracy of the preparation of the primary impression of most patients with complete toothless teeth can be improved.

A novel method and system are provided for a base guide with a retention mechanism designed to facilitate sequential dental implant surgical guides and immediate loading of a fixed full-arch provisional prosthesis. The system leverages advanced computer-guided surgery technology to enhance accuracy, efficiency, and patient outcomes in implant dentistry. The base guide with retention mechanism serves as a foundational component for guiding the sequential placement of dental implants and facilitating immediate loading of a fixed full-arch provisional prosthesis, offering significant benefits to clinicians and patients alike. A pin positioning guide that latches over the cusps of a small number of teeth is used to place the base guide.

The present invention discloses an oral scanning method and an oral scanner based on the fusion of posture information and point cloud data, which belongs to the field of medical devices and includes the following steps: S1, selecting facial feature points with fixed positional relationships relative to the maxillary alveolar ridge and the mandibular alveolar ridge as facial markers for marking; S2, calculating the spatial positions of the oral scanning sensor and the posture sensor fixed on the oral scanner relative to the facial markers; S3, obtaining multi-angle point cloud data; S4, obtaining full-mouth point cloud data; S5, obtaining an intraoral scan model; S6, reconstructing a three-dimensional digital model of the soft and hard tissues of the edentulous jaw; S7, using image processing software to calculate the soft tissue thickness of the edentulous jaw area in the three-dimensional digital model of the soft and hard tissues of the edentulous jaw. The present invention adopts the above-mentioned oral scanning method and oral scanner based on the fusion of posture information and point cloud data, which can significantly reduce or avoid errors that occur in the splicing process of oral scanners that only rely on point cloud data, and improve the accuracy and efficiency of edentulous jaw digital impressions.

The invention belongs to the technical field of orthodontic medical instruments, and particularly relates to a miniature tubular anterior tooth orthodontic bracket and an orthodontic method thereof.The bracket body is of a hollow circular tubular structure, the tooth attaching end is of a continuous smooth cylindrical surface design and is in linear contact fit with the tooth surface, and the protruding height after adhesion is smaller than or equal to 2 mm; the roughness Ra of the inner wall of the internal force application channel is 0.15-0.25 mu m; the main body is formed by integral compression molding of a medical composite material containing bismuth oxide; the technical prejudice that bonding is unstable and non-metallic materials cannot be developed due to line contact is broken through, and the excellent performance that the X-ray development definition is greatly improved, the shear bonding strength is 18.5 + / -1.2 MPa, the hardness retention rate is larger than or equal to 90% after artificial saliva soaking for 180 days, and the mucous membrane compression pain occurrence rate is reduced is achieved; the single bracket can independently complete the anterior tooth local deformity correction function without being matched with a full-mouth bracket system, the anterior tooth gap closing period is averagely shortened, and the social concealment, the clinical operation efficiency and the patient comfort are remarkably improved.

The application discloses a surgical guide plate for periodontal auxiliary acceleration of osteogenic orthodontic treatment and a manufacturing method thereof, and comprises the following steps: designing a retention structure model covering the tooth crown surfaces of all target teeth and adjacent teeth on the filled concave dental arch data according to the three-dimensional data of the dental arch roots of the whole dental arch; designing a first positioning structure model and a second positioning structure model connected with the retention structure model on the buccal bone surface of the three-dimensional data of the jaw bone; designing a linear opening area on the first positioning structure model according to the three-dimensional data of the dental arch roots of the whole dental arch to obtain a bone cortex incision positioning structure model, and obtain bone cortex incision limiting guide plate data and bone increment limiting guide plate data; and printing the bone cortex incision limiting guide plate data and the bone increment limiting guide plate data to obtain the bone cortex incision limiting guide plate and the bone increment limiting guide plate. The application can improve the positioning accuracy of the surgical area and reduce the difficulty of the surgery.

The invention belongs to the technical field of dental restoration, and particularly relates to a dental restoration diagnosis wax pattern segmented transfer guide plate and a method thereof. The contour form of the guide plate is matched with the three-dimensional surface of a tooth position needing to be restored in a digital diagnosis wax pattern; the guide plate is of a double-layer structure formed by compositing a full-transparent flexible inner layer and a rigid outer layer. A buccal injection hole and a lingual injection hole which are used for injecting light-cured resin are distributed on the surface of the guide plate according to a repaired tooth position, and hole axes of the buccal injection hole and the lingual injection hole form acute angles and the like with a tooth long axis. The problem of insufficient light transmission of a traditional material is solved through the high-light-transmission double-layer structure, full-opening transfer limitation is broken through through a segmented alternate guide plate or progressive segmented repair strategy, precise demolding and occlusion supporting are achieved through the flexible / rigid composite layer, and compared with a traditional technology, the clinical precision and operation reliability are remarkably improved.

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.

The embodiment of the invention provides a full-oral implant immediate repair temporary tooth manufacturing method, a multifunctional implant guide plate manufacturing method and electronic equipment, and belongs to the technical field of oral implant. The obtained multifunctional implantation guide plate comprises a retention device, a dentition occlusion stabilizing device, an osteotomy site marking device, an implant guide implantation device and a relative position marking device, and the devices are used for assisting oral implantation operation of an edentulous jaw patient, so that intraoral operation such as osteotomy operation and implant implantation can be accurately and quickly completed; the invention relates to a relative position marking device for an implant guide implanting device, which shortens intraoral operation time of an implanting operation. And data matching of extraoral scanning and intraoral scanning is more accurate, so that the precision of temporary tooth design and manufacturing is improved, and the repair process of temporary tooth design and manufacturing is simplified.

The invention discloses an operation guide plate for periodontal auxiliary accelerated osteogenesis orthodontic treatment and a manufacturing method thereof. The manufacturing method comprises the following steps: designing a retention structure model covering the surfaces of dental crowns of all target teeth and adjacent teeth on dentition data after undercut filling according to full-mouth dentition tooth root three-dimensional data; respectively designing a first positioning structure model and a second positioning structure model which are connected with the retention structure model on the buccal bone surface of the jaw three-dimensional data; designing a linear opening area on the first positioning structure model according to the full-mouth dentition tooth root three-dimensional data, obtaining a bone cortex incision line positioning structure model, and obtaining bone cortex incision limiting guide plate data and bone increment limiting guide plate data; printing is conducted based on the bone cortex incision limiting guide plate data and the bone increment limiting guide plate data, and the bone cortex incision limiting guide plate and the bone increment limiting guide plate are obtained. The positioning accuracy of the operation area can be improved, and the operation difficulty is reduced.

The utility model relates to the technical field of oral equipment, in particular to a full-oral implant mold taking and positioning structure, which is characterized in that a plurality of positioning holes and a plurality of overflow holes are formed in a positioning tray, and the plurality of positioning holes are in one-to-one correspondence with an upper jaw / lower jaw implant abutment; the mold taking rod penetrates through the positioning hole to be connected to the upper jaw / lower jaw implant abutment, and the outer wall of the mold taking rod and the inner wall of the positioning hole are fixedly connected together through wax type resin, so that reduction of impression accuracy caused by movement of the mold taking rod during mold taking is prevented, and the time for fixedly connecting the mold taking rod in traditional chair-side operation is shortened. Meanwhile, the positioning tray is designed on the upper jaw to be attached to the mucous membrane at the palate fornix part, and the tray edge is designed on the lower jaw to be attached to the alveolar mucous membrane, so that the stability of the positioning tray is improved; and a high-fluidity impression material can be injected between the positioning tray and the alveolar ridge through the overflow hole, so that the impression material can be uniformly distributed in the reserved gap, and an accurate impression is prepared.

The present application relates to the field of digital data processing technology, and specifically to a finite element analysis method and system for full-mouth edentulous removable dentures, the method comprising: obtaining a CT image of the patient's oral cavity, constructing a three-dimensional finite element model by finite element analysis, and meshing the three-dimensional finite element model, obtaining the unit size and maximum deviation coefficient of each grid, and the pressure trend vector of each grid during each dynamic occlusion process; determining the shape complexity weight of each grid; determining the pressure difference, force sensitivity, force discreteness, and structural disorder eigenvalue of each grid; obtaining each defective grid; calculating the number of extended neighborhood layers of each defective grid; refining the grid, and optimizing the denture according to the simulation results of the occlusion simulation of the three-dimensional finite element model. The present application can accurately capture local stress changes, improve the accuracy of finite element analysis of denture force analysis, and reduce the pain of patients when biting.

The application discloses a high-precision and automatic crown generation method, which comprises seven steps of oral cavity three-dimensional data acquisition, full-mouth tooth semantic segmentation, upper and lower jaw point cloud accurate registration, abutment and related gingival accurate segmentation and modification, multi-tissue segmentation of the environment around the abutment, secondary accurate detection of the neck margin line, crown generation and multi-dimensional fine modification. Through the combination of deep learning and point cloud algorithm, high-precision segmentation of teeth and gums and accurate restoration of occlusion relationship are realized, the oral cavity anatomical feature library and the clinical restoration standard are fused, and the 3D crown model with high adhesion, coordinated occlusion and clinical requirements is generated through multi-dimensional fine tuning and optimization. The method is fully automated, greatly improves the efficiency, reduces the operation threshold, reduces the material waste and the diagnosis and treatment cost, significantly improves the restoration success rate, and is suitable for various oral cavity restoration scenes.

This invention discloses a three-quadrant split-type oral impression tray and its usage method. The tray is composed of a left posterior tooth component, a right posterior tooth component, and an anterior tooth component that can be detachably assembled. The left and right posterior tooth components are symmetrically structured, and each has a pair of L-shaped protrusions along its length. The anterior tooth component has corresponding mating grooves at the L-shaped protrusions. The metal connectors adopt a foolproof asymmetrical tenon design. After being inserted into the mating grooves, they achieve smooth locking through precise clearance tolerances. At the same time, magnetic suction pieces are pre-installed in the mating grooves. The tray can be quickly disassembled into three independent units, adapting to various scenarios of partial impression taking for single jaw full teeth, anterior teeth, and anterior teeth and unilateral posterior teeth. When taking an impression, the surface contact between each component and the oral tissue ensures stable support. When demolding, linear separation is achieved by disassembling the components to disperse resistance. All connectors and mating structures are located at the bottom of the tray, completely avoiding encroachment on the operating space outside the oral cavity.

The utility model relates to the technical field of orthodontics, and discloses an auxiliary device for orthodontics, which comprises an orthodontics dental crown, an auxiliary dental crown, a personalized traction bow, a traction rubber chain and a traction tongue side buckle, one side of the orthodontics dental crown is fixedly connected with the auxiliary dental crown, and one side of the orthodontics dental crown far away from the auxiliary dental crown is fixedly connected with the personalized traction bow. According to the utility model, the local orthodontic device is designed and used only aiming at a tooth area needing to be corrected, so that the influence of a traditional orthodontic device on the whole oral cavity is avoided, the discomfort caused by hitting an anchorage nail traction device and adhering a bracket arch wire to the whole mouth is avoided, and molar teeth and inclined and displaced teeth of individual teeth can be dragged; meanwhile, through accurate design and customization, the device can pull near, far and middle inclined tooth positions and repair the function of extending the missing teeth to the jaw teeth, and has the characteristics of rapidness, high efficiency and small foreign body sensation.