350 results about "Lingual orthodontics" patented technology

Embodiments relate to the methodology of direct manufacture of a customized labial / lingual orthodontic tube by using a ceramic slurry-based additive manufacturing (AM) technology. For example, a method of manufacturing customized ceramic labial / lingual orthodontic tubes by additive manufacturing may comprise measuring dentition data of a profile of teeth of a patient, based on the dentition data, creating a three-dimensional computer-assisted design (3D CAD) model of the patient's teeth, and saving the 3D CAD model, designing a virtual 3D CAD tube structure model for a single labial or lingual tube structure based upon said 3D CAD model, importing data related to the 3D CAD tube structure model into an additive manufacturing machine, and directly producing the tube with the additive manufacturing machine by layer manufacturing from an inorganic material including at least one of a ceramic, a polymer-derived ceramic, and a polymer-derived metal.

The invention discloses an orthodontic micro-power system operation control method and system, and belongs to the technical field of orthodontics, and the method comprises the steps: 1, carrying out the butt joint of an image device, obtaining an oral cavity film of a patient, and generating an oral cavity model according to the oral cavity film; 2, marking each tooth to be adjusted in the oral cavity model; determining an expected adjustment model according to the oral model; 3, setting a target adjustment mode based on the expected adjustment model, and generating a guidance video according to the target adjustment mode; 4, acquiring an oral cavity image of the patient, and performing real-time positioning identification according to the oral cavity image of the patient and the oral cavity model; 5, intercepting a corresponding guidance display video from the guidance video according to tooth positioning; displaying the guidance display video to a doctor; 6, performing parameter control on the orthodontic micro-power system according to the target adjustment mode and tooth positioning; according to the invention, not only are the accuracy and efficiency of orthodontic treatment improved, but also the individuation and visualization of the treatment scheme are realized.

The invention discloses a draw hook for orthodontics, which belongs to the technical field of orthodontics and comprises a C-shaped mounting seat, a telescopic rod is fixed on the C-shaped mounting seat, and an anti-separation head is in threaded connection with a telescopic part of the telescopic rod. A first threaded hole is formed in the end face of the telescopic part, a second threaded hole is formed in the side wall of the telescopic part, and the anti-disengaging head can be in threaded connection with the first threaded hole or the second threaded hole. The C-shaped installation base can be well attached to a cylindrical installation foundation, the installation stability of the traction hook is further improved through the design of the anti-skid lines, and horizontal sliding or angle inclination of the traction hook is prevented; the first threaded hole is formed in the end face of the telescopic part, and the second threaded hole is formed in the side wall of the telescopic part, so that the direction of the anti-disengaging head can be changed, and the traction requirements of more correction devices are met.

The invention discloses an orthodontic effect preview image generation method and device, and relates to the technical field of orthodontics, and the method comprises the following steps: 1, data collection; 2, data preprocessing; step 3, semantic association construction; 4, model prediction; step 5, carrying out difference visualization; according to the method, the problem of format and dimension unification in multi-modal data integration is solved, semantic association is constructed to enable the model to understand internal logic of data, difference visualization means are perfected to assist doctors in positioning reasons and making decisions, orthodontic effect prediction accuracy is effectively improved, making of personalized treatment schemes is assisted, and the method is suitable for popularization and application. And many challenges confronted by a traditional method in the field of orthodontics are overcome.

The utility model discloses a front traction bracket for orthodontics, which comprises a plurality of vertical rods, one end of each vertical rod is provided with a placing component, one end of each vertical rod is provided with an adjusting component I and an adjusting component II, and the adjusting component I is provided with an auxiliary component. The front support can be provided for counter-acting force generated by traction, so that the acting point is more reliable, the stress area is wider, the pressure of the contact surface is greatly reduced, medical breathable sponge pads are attached to the inner side of the lower jaw surrounding baffle and the inner side of the lower jaw supporting plate, lower jaw skin injury caused by stress is relieved to the maximum extent, and the safety of the lower jaw is improved. By additionally arranging the enclosure pressing plate and the jaw support pressing plate on the outer sides of the lower jaw enclosure plate and the lower jaw support plate, the medical gauze can be conveniently and quickly fixed by medical staff or patients subsequently, the medical staff or the patients can conveniently replace the medical gauze, and the problem that the skin is in contact with the front traction bracket for orthodontics for a long time, bacteria are bred, and then rash is caused can be effectively solved.

The invention relates to the field of orthodontics, in particular to a device for controlling palatal root movement of anterior teeth of an upper jaw and a manufacturing method. According to the device, the traction arm and the traction ring which extend to the palatal side of the anterior maxillary teeth are additionally arranged on the basis of the transverse palatal bar and are matched with the traction buckle of the anterior maxillary teeth to guide orthodontic force to act below a tooth impedance center, so that root control movement which is difficult to achieve by a traditional orthodontic method is realized, bending torque on an arch wire or placing other root control devices is not needed, and the whole device is simpler and more attractive; in addition, the device part is manufactured by adopting a 3D printing technology, firstly, tooth and intraoral soft tissue data of a patient are obtained by scanning the interior of an oral cavity, then the oral scanning data are matched with CBCT, a specific device is designed by using software, finally, a finished product is directly printed in a 3D manner, the transverse palatal bar and the traction buckle are completely matched with the tooth surface by adopting the 3D printing technology, and the comfort level is high.

The invention belongs to the technical field of orthodontics, and particularly relates to a generative adversarial network-driven invisible appliance mechanical optimization system and method, and the system integrates a multi-target pressure field mapping network, a self-adaptive pressure gradient optimizer, a clinical feedback reinforcement learning system, a personalized sensitive area protection mechanism and a time sequence dynamic mechanical optimization engine. The system converts a tooth position movement vector into three-dimensional pressure field distribution, generates a thickness and rigidity distribution function, receives clinical feedback to update model parameters, marks and adjusts a sensitive area pressure upper limit, performs time dimension optimization based on a mechanical attenuation model, and generates staged progressive design parameters; the design efficiency is remarkably improved, the correction scheme design period is shortened from 7 days to 8 hours, the efficiency is improved by 21 times, meanwhile, correction precision and comfort are ensured, and efficient, accurate and personalized invisible correction appliance design is achieved.

Embodiments may provide improved techniques for creating custom lingual or labial ceramic orthodontic brackets, and which provides the capability for in-office fabrication of such brackets. For example, a method of manufacturing customized ceramic labial / lingual orthodontic brackets by ceramic slurry-based AM may comprise measuring dentition data of a profile of teeth of a patient, based on the dentition data, creating a three dimensional computer-assisted design (3D CAD) model of the patient's teeth using reverse engineering, and saving the 3D CAD model on a computer, designing a 3D CAD bracket structure model for a single labial or lingual bracket structure, importing data related to the 3D CAD bracket structure model into a ceramic slurry-based AM machine, directly producing the bracket (green part) in the ceramic slurry-based AM machine by layer manufacturing, and processing the brackets in a sintering and debinding oven prior to direct use.

The invention relates to a mechanical evaluation system based on rotation and inclination of a bracket-free appliance, and belongs to the technical field of orthodontic equipment. The system comprises four core units: an integral dental arch constraint unit simulates oral temperature through a constant-temperature water bath assembly, adjusts model postures through a camera holder type adjustable dental arch base, and constructs a precise constraint environment; the clinical displacement driving unit is based on an anchorage center bearing lever structure, and positioning-driving-data synchronization is achieved through adjustable anchorage positioning, multi-direction servo driving and displacement closed-loop calibration. The single-tooth mechanical sensing unit collects dynamic mechanical data, and interference is removed through Kalman filtering; and the data processing unit corrects attenuation deviation by using multiple linear regression in combination with environmental parameters, generates a mechanical attenuation curve, calculates a time attenuation percentage, and outputs a mechanical evaluation report by comparing with a clinical suitable force application interval. The evaluation accuracy and clinical suitability of the method provide a scientific basis for the optimization of an orthodontic scheme.

The invention discloses an intelligent auxiliary decision-making system for an orthodontic scheme based on multi-source data, and relates to the technical field of orthodontics, and the system comprises three core units: a multi-source data platform construction unit realizes structured storage and efficient interaction of data; the problem list and diagnosis intelligent generation unit analyzes tooth, jaw and soft tissue data based on three-dimensional space dimensions, automatically compares standard reference values to generate a problem list and a structured diagnosis conclusion, and provides a quantitative basis; the intelligent recommendation unit for the orthodontic treatment scheme fuses multi-modal data features, generates a preliminary scheme by using a deep learning model, combines similar case retrieval and knowledge graph optimization logic, and continuously improves recommendation accuracy through a clinical feedback closed loop. Three-dimensional fusion and automatic diagnosis of multi-source data are realized, subjective experience deviation is reduced, diagnosis and treatment efficiency is improved, and standardized and personalized auxiliary decision support is provided for orthodontics doctors.

The invention discloses a digital orthodontic treatment planning system, and relates to the technical field of orthodontics. The system comprises a data acquisition module, a three-dimensional model construction module, a case database module, a diagnosis model construction module and a treatment planning module. The data acquisition module is used for acquiring oral scanning and CBCT scanning data and generating an oral three-dimensional model; the three-dimensional model construction module performs fusion processing on the two types of models to construct a three-dimensional gum model; the case database module is used for constructing a case database on the basis of soft tissues, CBCT projection measurement hard tissues and three-dimensional gum model characteristics; the diagnosis model construction module constructs an intelligent diagnosis model through a self-adaptive deep neural network and generates a treatment scheme set; and the treatment planning module combines patient data to judge malformation, formulate a scheme, and output a feasible treatment scheme after collision detection, model adjustment and scheme evaluation.

A method of manufacturing customized ceramic labial / lingual orthodontic brackets by digital light processing, said method comprises measuring dentition data of a profile of teeth of a patient, wherein measuring dentition data is performed using a CT scanner or intra-oral scanner, based on the dentition data, creating a three dimensional computer-assisted design (3D CAD) model of the patient's teeth using reverse engineering, and saving the 3D CAD model on a computer, designing a 3D CAD bracket structure model for a single labial or lingual bracket structure, importing the 3D CAD bracket structure model into a Digital Light Processing (DLP) machine, directly producing the bracket by layer manufacturing.

The invention discloses a dual-stage CBCT and oral scanning tooth registration method and system, and relates to the field of tooth three-dimensional digital model registration, and the method comprises the following steps: extracting a tooth voxel structure in a CBCT image and a dental crown grid structure in an oral scanning image through a segmentation network; a coarse-to-fine depth registration network is introduced, geometric feature coding and feature matching are carried out on super-points obtained through multi-resolution down-sampling, local matching is carried out on a dense point set in a super-point neighborhood, a rigid transformation matrix is calculated in parallel, and an optimal registration result is screened out from the rigid transformation matrix; and dividing a registration object into a plurality of three-tooth groups containing three adjacent teeth, and performing local iteration alignment based on an initial registration result. The method still has higher robustness and accuracy under the complex conditions of large cross-modal difference, high input point cloud density and the like, is shorter in time consumption, and provides reliable data basis and automatic support for clinical scenes such as orthodontics and implantation.

A three-dimensional orthodontic undercut model generation method based on a control point gets rid of the dependence of the traditional technology on manual operation, and innovatively introduces an automatic identification and special processing mechanism for malocclusion teeth at the same time to ensure that a high automation level can be kept in a complex case. The method comprises the following steps of: (1) calculating a tooth occlusion area; (2) calculating adjacent areas and contact areas between teeth; (3) generating an initial control point; (4) adjusting and optimizing control points; (5) judging a triangular structure; (6) constructing a grid model through common undercut; and (7) constructing a grid model by a triangular undercut. According to the method, rapid and automatic generation of the tooth undercut digital model is realized, the working efficiency is remarkably improved, standardization of model construction is ensured, great convenience is provided for subsequent die pressing operation, and errors caused by human factors are effectively reduced.

The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to an orthodontic anterior tooth conjunctive coverage measuring device which comprises a dental probe body. The dental probe body consists of a handle, a transverse measuring rod and a longitudinal measuring rod; the longitudinal measuring rod is composed of a longitudinal rod body, a longitudinal sleeve and a cutting end hooking rod. The longitudinal sleeve sleeves the bottom of the longitudinal rod body; a plurality of first scales are arranged on the outer side wall of the longitudinal rod body, a plurality of second scales are arranged on the outer side wall of the longitudinal sleeve, and a plurality of third scales are arranged on the outer side wall of the transverse measuring rod. According to the measuring device, the longitudinal rod body and the longitudinal sleeve can be used for measuring the length and the covering distance of a lower anterior tooth crown, the longitudinal sleeve and the longitudinal rod body form a telescopic rod structure with the adjustable length, the measuring device can be suitable for measuring lower anterior tooth crowns with different lengths, the transverse measuring rod can be used for measuring the covering distance, and compared with an existing common tooth probe, the measuring device is convenient to use. The measuring device is specially used for measuring the covering distance and the covering distance, and the accuracy of a measuring result can be remarkably improved.

The invention discloses an IOS image and CBCT image registration method based on particle swarm and single-tooth optimization, and belongs to the field of image data processing, and the method comprises the following steps: respectively obtaining tooth semantic segmentation results and point cloud data of an IOS image and a CBCT image through preprocessing and segmentation steps; introducing a particle swarm optimization algorithm, and performing iterative search and optimization on six-degree-of-freedom rigid transformation parameters between the IOS image data and the CBCT image data so as to complete global initial registration of the dental arch scale; and on the basis of a result after global registration, a registration object is divided into a plurality of local units based on a single tooth, and local iteration alignment is performed on each unit, so that tiny dislocation on the single tooth is eliminated, and the overall registration effect is optimized. According to the method, on the basis of processing cross-modal difference and realizing global registration, the registration precision of a single tooth level is further ensured through a local optimization mechanism, and reliable automatic registration support is provided for clinical scenes such as orthodontics and implantation.

The present invention relates to the technical field of orthodontic disease auxiliary diagnosis, and in particular to an oral orthodontic disease auxiliary diagnosis system based on deep learning, comprising: an image processing module, used to detect an image quality reference coefficient and perform image segmentation; a data processing module, used to determine a preliminary file set and determine the characteristic state of each preliminary file set; a data screening module, used to determine the processing method corresponding to each preliminary file set according to the characteristic state of each preliminary file set; a first analysis module, used to determine the matching method of target patient information and the initial file set according to the target patient category; a second analysis module, used to determine the matching method of target patient information and the initial file set according to the abnormal tooth state of the target patient; a report recommendation module, used to generate a recommendation report from the matching historical file and send it to a client; a data storage module, used to store patient files. The present invention improves the accuracy of file matching and the processing efficiency.

The invention relates to the field of orthodontics, in particular to a tooth orthodontics intermediate motion prediction method based on a conditional diffusion model. The invention aims to solve the problem that in the existing digital orthodontic technology, the motion trail generation in the correction intermediate process depends on manual design, and the efficiency is low. According to the method, a conditional diffusion model is constructed, and supervised training is carried out by using data sets of tooth movement tracks before, after and during tooth treatment. In the reasoning stage, the model only needs to input tooth model data before and after treatment, and a complete intermediate movement track meeting biomechanical constraints and clinical requirements can be automatically and accurately generated. Through a data driving mode, expert experience is learned and reproduced, tooth collision can be effectively avoided, the occlusion relation is ensured, and the automation level and prediction precision of orthodontic scheme design are remarkably improved.

The invention relates to the technical field of orthodontics and medical image processing, in particular to an artificial intelligence-based automatic positioning method and system for a maxillary bone expansion device. The positioning method comprises the following steps: taking a cone beam computed tomography image and intraoral scanning data of a patient; segmenting a key anatomical structure based on the scanned image, wherein the key anatomical structure comprises an incisor foramen and a transverse palate slit; automatically identifying a plurality of cranio-maxillofacial mark points based on the scanned image, and establishing a maxilla three-dimensional coordinate system; based on the three-dimensional coordinate system, the intraoral scanning data and the key anatomical structure, positioning adjustment is carried out on the arch expander to determine the final positioning posture, and positioning adjustment comprises the steps that the safe distance between the arch expander and the surface of the palate mucosa is screened, and contact with the key anatomical structure is avoided; and outputting the three-dimensional parameters of the final positioning posture. According to the invention, the automatic, intelligent and safe placement of the arch expanding device is realized, so that the design efficiency is improved, the operation difficulty is reduced, and the clinical safety and the arch expanding effect are guaranteed.

The invention discloses an orthodontic auxiliary decision-making method based on fuzzy comprehensive evaluation and an operation system thereof, which are used for providing a personalized orthodontic treatment scheme, and specifically comprise the following steps: firstly, comprehensively analyzing key factors influencing an orthodontic treatment effect, screening out representative evaluation indexes, and determining the evaluation indexes; an evaluation system of orthodontic treatment decisions is constructed; then, respectively calculating a subjective weight and an objective weight by adopting an analytic hierarchy process and an entropy weight method, and optimizing weight distribution in combination with a game theory to obtain a comprehensive weight of each index; and finally, based on a fuzzy comprehensive evaluation method, constructing a trapezoidal membership function, establishing a fuzzy relation matrix, and determining an optimal treatment scheme through a maximum membership principle. Scientific and accurate auxiliary decision support can be provided for orthodontic doctors, the individuation level of a treatment scheme is effectively improved, and the developed operation system application can improve the diagnosis efficiency of young doctors.

The application belongs to the technical field of oral orthodontic medical instruments, and discloses a system of invisible appliance convertible position rigid anchorage accessory and an assembling method thereof. The embedded rigid anchorage accessory comprises an oral commonly used light-cured resin accessory body and a metal framework integrally embedded in the interior of the accessory body. The metal framework has an anchoring section completely embedded in the accessory body and an anchor-shaped connecting section extending out of the surface of the accessory body. The anchor-shaped connecting section is configured as a barb-shaped or T-shaped structure suitable for accommodating a ligation wire and forming a mechanical lock, and has a bidirectional force control function. The application constructs an absolute anchorage system without relative displacement between teeth and implant anchorage, avoids side effects caused by insufficient anchorage or poor patient cooperation in traditional elastic traction, and only needs to grind off the anchor-shaped connecting section on the surface of the accessory body after the anchorage structure completes the function, so as to become a standard vertical rectangular accessory to play a role.

The invention discloses an orthodontic visualization system and method for temporomandibular joint rotation simulation, and relates to the technical field of orthodontic medical treatment, and the system comprises a hard tissue extraction module which automatically extracts hard tissue image data from a patient skull CBCT image; the joint recognition control module recognizes anatomical features of the condyle process and the glenoid fossa and generates optimized condyle process rotation parameters; the jaw rotation control module dynamically optimizes a lower jaw rotation angle based on first-order and second-order change rates in the contact pressure distribution model; the tooth image intelligent virtual module is used for identifying a tooth form outline, simulating a tooth embedding or separating state and quantifying a vertical displacement amount of the tooth; the microprocessor integrates data of each module to generate dynamic image data; the visual terminal module dynamically displays a condylar process rotation track, contact pressure distribution and a tooth displacement state, and marks high-pressure and low-pressure areas through colors. According to the method, the accuracy and efficiency of orthodontic scheme design are improved, and the method has important clinical application value.

The present application relates to a kind of based on bracketless appliance rotation and oblique mechanical evaluation system, belong to oral orthodontic equipment technical field.The system includes four big core units: whole dental arch constraint unit simulates oral temperature by constant temperature water bath component, camera holder type adjustable dental arch base adjusts model posture, constructs accurate constraint environment;Clinical displacement driving unit is based on anchorage center bearing lever structure, through adjustable anchorage positioning, multidirectional servo driving and displacement closed-loop calibration, realize positioning-driving-data synchronization;Single tooth mechanical sensing unit collects dynamic mechanical data, and interference is removed by Kalman filtering;Data processing unit combines environmental parameters, and uses multiple linear regression to correct attenuation bias, generates mechanical attenuation curve and calculates time attenuation percentage, compares clinical suitable force interval and outputs mechanical evaluation report.The evaluation accuracy and clinical adaptability of the present application provide scientific basis for oral orthodontic scheme optimization.

The application discloses an integrated auxiliary mouth gag for orthodontics, which comprises a left handle and a right handle, the left handle and the right handle are sleeved on the outside of a hinged sleeve, and can rotate relative to each other, the front end of the left handle and the right handle are fixedly connected with a front opening rod, the front opening rod is in a U shape, a connecting rod is arranged between the left handle and the right handle, the connecting rod is controlled through a locking assembly, a side opening rod is arranged at the position of the hinged sleeve, and the side opening rod is in a U shape. The mouth gag is provided with two front opening rods for supporting upper teeth and lower teeth, and is also provided with a side opening rod for pulling the corners of the mouth on the side, so that the mouth is better exposed to the doctor, the mouth gag is placed on one side of the mouth for use, and does not affect the treatment of the doctor, and in addition, the side opening rod of the mouth gag can be detached and separated from the main body of the mouth gag, is more flexible, and reduces operation complexity.

1. The name of the design product: palatal bar. 2. The use of the design product: for orthodontics. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view. 5. Design 1 is designated as the basic design.

The material storage box comprises a storage box body, a box cover capable of being opened and closed is arranged on the storage box body, and a plurality of detachable baffles are arranged in the storage box body to divide the interior of the storage box body into a plurality of independent spaces. The side wall of the storage box body is provided with a plurality of cutting pieces, rubber chain holes and ligature wire bayonets, the rubber chain holes and the ligature wire bayonets are close to the cutting pieces, and the rubber chain holes and the ligature wire bayonets are communicated with the corresponding independent spaces respectively. The material storage box is simple in structure and high in functionality, can be freely combined according to requirements to form storage spaces of different numbers and different sizes, can also rapidly cut off materials when the materials are used, and improves the working efficiency and operation convenience of medical staff.

The invention discloses an orthodontic bracket mounting system and an assembly thereof, and relates to the technical field of orthodontic instruments. The system comprises an orthodontic bracket and positioning tweezers. The bracket is provided with anti-drop clamping structures on the near, far and middle side surfaces of a base body, such as a wedge-shaped inner inclined surface for inclined surface clamping and / or an anti-drop clamping groove. And the clamping part of the positioning tweezers is configured to be complementarily matched with the anti-drop clamping structure, for example, an inner inclined clamping part with a narrow front part and a wide rear part and / or an inner side convex part are / is formed. Through the collaborative innovation design of the bracket and the tweezers, the clinical problems that an existing ultrathin bracket is unstable in clamping and prone to slipping in the direct bonding operation are solved, double stable clamping is achieved through slope self-locking and mechanical clamping, and the success rate and efficiency of operation are remarkably improved.

1. The name of this design product: Fully adjustable front traction device. 2. Purpose of this product design: For use in the orthodontic department for in vitro auxiliary correction and traction of the maxillary bone. 3. The key design point of this design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the design points: three-dimensional picture. 5. The rear view is symmetrical to the main view, so the rear view is omitted.

The invention discloses a self-adjusting orthodontic force bracket device for orthodontics, and relates to the technical field of orthodontics. The device comprises a base, a bracket, a sliding fin and an arch wire, the bracket is located on the base, the sliding fin is arranged on the bracket in a sliding mode, a groove is formed in the bracket, the arch wire is arranged in the groove in a clamped mode, and an adjusting assembly is arranged in the bracket; the adjusting assembly comprises a power assembly and a moving assembly; power can be transmitted to the moving assembly through the power assembly, the moving assembly can control the sliding wing piece and the bracket to move, and therefore the situation that manual adjustment is low in operation efficiency can be avoided, and the purpose of automatic adjustment is achieved; the ejector rod is driven to reset through the supporting plate by means of the elastic force of the first spring, the inserting block is driven to move reversely to be inserted into the inserting groove through the connecting rod to lock the third rotating shaft, and therefore the situation that the third rotating shaft rotates can be avoided, and the locking purpose is achieved.

The invention relates to the technical field of orthodontic appliances, in particular to a self-adjusting arch expander based on hydraulic transmission, which comprises a jaw plate and a tooth sleeve, the tooth sleeve is arranged on the side wall of the jaw plate, a liquid storage bag is arranged in the tooth sleeve, and after the tooth sleeve is worn on a tooth, the liquid storage bag is positioned on a tooth occlusal surface; the jaw plate comprises a first part and a second part which can be far away from each other, a connecting pipe is arranged between the first part and the second part, and two ends of the connecting pipe are respectively arranged in the first part and the second part; a piston is arranged in the connecting pipe and provided with a push rod, the push rod is connected with the first part and the second part, so that when the piston pushes the push rod to move, the first part and the second part are pushed to be away from each other, a one-way valve is arranged in the connecting pipe, and the liquid storage bag is communicated with the one-way valve. According to the occlusal force of a patient, automatic arch expansion is achieved, the size of arch expansion force can be adjusted in a self-adaptive mode according to the size of the occlusal force of the patient, and the effect of improving the comfort and convenience of the patient after wearing is achieved.