158 results about "Single tooth" patented technology

The present invention relates to the technical field of dental medical treatment, and specifically discloses a method for using a CBCT (Cone Beam Computer Tomography) for automatically positioning a tooth, which comprises the following steps: S01, archiving CT data; S02, calculating AI and generating AI results; S03, entering CT reading by a client; S04, downloading and loading the CT data; S05, opening a function of a tooth lens; S06, selecting a corresponding tooth position in a tooth position list; and S07, selecting a 3D tooth rendering mode. The function of the ‘tooth lens’ is added into traditional CT reading, which is suitable for clinical disease diagnoses such as ‘tooth extraction, root canal therapy, tooth repair’ and the like in oral treatment, and doctors can precisely and quickly position the single tooth through selection for the tooth position, which facilitates more comprehensive analysis.

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 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 utility model relates to the technical field of daily hardware fittings, in particular to a single-tooth hinge. The single-tooth hinge comprises a first auxiliary rod, a second auxiliary rod, a supporting rod and a base. The supporting rod is rotationally connected with the first auxiliary rod and the second auxiliary rod. The second auxiliary rod is provided with a second rotating shaft, and the first auxiliary rod is provided with a first rotating shaft; a single-tooth structure is further arranged between the end of the first auxiliary rod and the base and comprises a single-tooth part arranged on the first auxiliary rod and a protruding part arranged on the base and clamped into the single-tooth part. Due to the fact that only one single-tooth part and one protruding part are arranged, compared with a structure with multiple tooth parts, the damage probability is greatly reduced, the use frequency is improved, long-term stable push-pull operation is ensured, and due to the fact that the single-tooth structure is relatively simple, maintenance and repair are relatively easy.

The utility model discloses an assembling and welding mechanism for a concentrated winding iron core. The device comprises a base, a hollow rotating platform, a first base table and a second base table, the hollow rotating platform is fixed to the base, the first base table and the second base table are fixed to the hollow rotating platform, and the hollow rotating platform rotates by 180 degrees to drive the first base table and the second base table to be interchanged in position. The first base station and the second base station are each provided with a positioning rotating tool, a pneumatic clamping jaw disc and a jacking mechanism in a rotating mode, the positioning rotating tools are used for assembling the single-tooth iron core into the stator, the pneumatic clamping jaw discs are arranged in the positioning rotating tools, the pneumatic clamping jaw discs are used for internally supporting the positioning rotating tools, and the jacking mechanisms are used for jacking the stator out of the positioning rotating tools. According to the utility model, the first base station and the second base station realize stator assembling and welding double stations, the first base station and the second base station rotate to exchange positions, the requirements of avoiding a framework and a coil are met, the welding operation and the assembling operation are continuously circulated, and the production efficiency is improved.

Embodiments of the present invention provide a method, system, devices and software which provide customized, clinically relevant designs, e.g. treatment plans / solutions for at least single tooth replacement therapy in real-time as needed to enable immediate confirmation of the validity and execution of patient-specific treatment solutions.A Machine Learning algorithm is used in a method or system for computer implementation of automatic restoration design. The restoration design includes the design of restorative elements such as crowns and abutments. Software is provided for carrying out the methods when executed on a digital processor. Manufacturing of the restorative elements is also included.

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 invention discloses a rotary speed reducer gear tooth root strength test device which comprises a test bed, a mounting mechanism, a rotating mechanism, a limiting mechanism, a strength test mechanism and an observation mechanism. A mounting mechanism is arranged in the center of the test bench to fix a to-be-tested gear and can adapt to replacement of gears of different specifications; the mounting mechanism is connected with a rotating mechanism under the test bench, and a rotating motor is provided with an encoder to realize accurate rotation angle switching of a gear; limiting mechanisms are arranged on the left and right sides of the mounting mechanism and can move in the radial direction to be engaged with the gears for limiting or separated for avoiding. Strength test mechanisms are arranged in front and back, can be adjusted in the radial direction, can be meshed with a single tooth to apply force, and can be fed back by a force sensor to switch postures by rotating an oil cylinder and an air cylinder; an observation mechanism on the strength test mechanism is used for detecting tooth root cracks by using an endoscope and marking the tooth root cracks through a spray head. The device does not need repeated positioning, can continuously detect each tooth root, improves the efficiency and precision, is adaptive to gears of various specifications, and meets the industrial detection requirements.

The utility model relates to an axial magnetic flux motor. The axial magnetic flux motor comprises a stator, the stator comprises a plurality of single-tooth units distributed around a central axis in the circumferential direction, each single-tooth unit comprises a single tooth and a coil, and the single tooth of each single-tooth unit has a longitudinal axis parallel to the central axis. The coil of each single-tooth unit is formed by a flat wire wound on the corresponding single tooth around the corresponding longitudinal axis, the size of the coil of each single-tooth unit in the width direction is larger than the size of the coil in the thickness direction, and the coil of each single-tooth unit is wound on the corresponding single tooth in an inclined mode. The respective coil has an inclination angle with respect to the respective longitudinal axis in the width direction that is greater than 0 degree and less than 90 degrees. The axial magnetic flux motor provided by the utility model has an improved winding mode.

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.

This utility model discloses a heavy-duty gear, specifically relating to the field of heavy-duty gear technology. It includes a gear disk with a plurality of tooth blocks arranged in a ring on its outer wall. A connecting structure is provided at the connection between the tooth blocks and the gear disk. The connecting structure includes a mating plate, which is fixedly installed on the bottom of the tooth blocks. A mating groove is formed on the surface of the gear disk, and a positioning groove is formed at the bottom of the inner cavity of the mating groove. A positioning block is fixedly installed at the bottom of the mating plate. Mounting grooves communicating with the mating grooves are formed on both sides of the outer wall of the gear disk. Mounting plates are fixedly installed at both ends of the mating plate. Fastening bolts are provided at the connection between the mounting plates and the gear disk. This utility model facilitates the installation of shafts and gear disks. Furthermore, once a single tooth block on the gear is worn or damaged, it allows operators to easily disassemble and replace the damaged tooth block, reducing gear maintenance costs and improving service life and performance.

This invention relates to the interdisciplinary field of medical image analysis and artificial intelligence, and particularly to a method, device, and medium for detecting non-occlusal abnormalities based on oral images. The method first acquires oral images and determines their abnormality category: a first abnormality (dependent on the characteristics of a single tooth) or a second abnormality (dependent on the spatial relationships between multiple teeth). Based on the category determination, an adaptive differential detection process is executed: if it is a first abnormality, a two-stage process of tooth position detection and single-tooth recognition is used to output a detection result associated with a precise FDI number; if it is a second abnormality, an end-to-end target detection model directly outputs the abnormality type and location region; if it is a mixed category, the two processes are executed in parallel and the results are intelligently integrated. This invention achieves automated, precise, and structured detection of non-occlusal diseases.

The invention relates to a manufacturing method of a stator of a motor, the stator and the motor, the stator is provided with an annular stator base body, the stator base body is formed by combining single T-shaped stator sections, and at least one insulating cover is sleeved on each stator section, and the manufacturing method is characterized by comprising the following steps of: winding a first single-tooth coil on the insulating cover of the first stator section; guiding a continuous connecting wire to the second stator segment, wherein the connecting wire extends from the first axial end face of the first stator segment to a second axial end face, axially opposite to the first axial end face, of the second stator segment; placing a connecting wire in an intermediate position on a second axial end face of the second stator segment radially outside a radial winding space of the second single-tooth coil prior to starting to wind the second stator segment; then a second single-tooth coil is wound on an insulating cover of a second stator section, a first winding layer of the second single-tooth coil is wound in a positive circulation mode, and all turns of the first winding layer extend parallel to the radial inner wall of the insulating cover in the axial direction; the wound first and second stator segments are combined into a stator ring.

This utility model relates to the field of gear hole machining technology, specifically to a device for machining balance shaft gear holes. It includes a connecting plate with several limiting grooves on one side. A gripper slides within these grooves. A worm gear ring rotates inside the connecting plate, with spiral teeth fixed to one side. Several arc-shaped tooth grooves meshing with the spiral teeth are formed on one side of the gripper. A worm rotates inside the connecting plate, meshing with the worm gear ring. A slot is formed at one end of the gripper, with a pair of positioning blocks rotating within it. A gear body is clamped between the grippers. This utility model solves the problem that in existing gear machining, machine tool clamps often grip only the outer edge of the gear, making single-tooth clamping prone to displacement. Furthermore, the self-locking mechanism between the grippers and the spiral teeth inevitably leads to loosening over time.

This invention provides a PDC single-tooth rock-breaking experimental device and a method for analyzing the rock-breaking mechanism. The experimental device includes a rock-breaking device body, a PDC tooth cutting depth adjustment mechanism, a cutting speed adjustment mechanism, and a cutting force measurement mechanism. The cutting speed adjustment mechanism can adjust the cutting speed of the rock sample; the rock-breaking device body is used to fix and install the cutting depth adjustment mechanism; the cutting depth adjustment mechanism can clamp the PDC tooth and precisely control its inclination angle and cutting depth; the cutting force measurement mechanism can monitor the cutting force on the rock sample. The method includes the following steps: setting parameters such as cutting depth, cutting speed, and inclination angle; monitoring the cutting force and recording the dynamic rock crushing process; sieving and collecting rock fragments, determining the mass fraction of different groups of rock fragments, and preliminarily determining the ductile-brittle crushing mode of the rock based on the distribution pattern of the rock fragments. This invention has the advantages of precisely controlling the cutting depth, PDC tooth inclination angle, and cutting speed.

The set of inventions relates to medical devices, in particular to surgical retractors and wound retractors for displacing and securing anatomy of a surgical incision in a given position during surgery to provide access to a surgical region of a patient's body. A removable clip for a surgical retractor, made as an L-shaped curved member, includes a base provided with a device for fixation in a surgical retractor and a microsurgical instrument recess, and a pair of teeth for holding an anatomical structure. The toothing is configured as a profiled plate with a working area widening to ensure contact with the anatomical structure, the widening being formed by a raised pad located at least on the inner and / or outer end edge side of the lower end of the plane of the toothing plate. The included angle between each tooth part and the plane of the base is smaller than 90 degrees, and therefore gaps used for passing of microsurgical instruments are formed between the tooth parts. The surgical retractor comprises a frame with a rack carrying a fixed arm and a movable arm, the fixed arm and the movable arm being hingedly connected to a retainer for the detachable clip, where the retainer is configured to receive at least one of the aforementioned detachable clips. A removable clip assembly for a surgical retractor includes at least one central dual tooth removable clip; the at least one peripheral double-tooth detachable clamp is constructed to be capable of accommodating the central double-tooth clamp between the tooth parts of the central double-tooth clamp; and at least one central single-tooth detachable clamp. The use of the invention provides an increased working space and a higher degree of freedom of surgical instrument operation, enabling access to the lateral region of the operated structure during surgery without extending the skin incision.

The application discloses a single-tooth spliced outer rotor motor cooling device, which comprises a casing assembly, a stator assembly and a water cooling flow channel. The stator core of the stator assembly comprises a stator yoke arranged in a positioning groove and a plurality of stator teeth respectively detachably connected to the outer circumferential side of the stator yoke. The stator teeth are positioned and connected with the front limiting table and the rear limiting table through positioning shafts. The middle flow channel of the water cooling flow channel comprises a plurality of connecting flow channels which are respectively connected with a front backflow channel and a rear backflow channel. The positioning shafts are hollow structures to form part of the connecting flow channels. The outer circumferential side of the front end of the positioning shaft is sealingly connected with the front limiting table, and the outer circumferential side of the rear end is sealingly connected with the rear limiting table. The single-tooth spliced outer rotor motor cooling device not only facilitates the replacement of the stator teeth individually, reduces the maintenance cost, but also avoids the risk of contact between the cooling liquid and the stator core or the motor winding, prolongs the service life of the motor.

This invention belongs to the field of medical image processing technology and proposes a method for 3D tooth point cloud segmentation and tooth type recognition based on deep learning. The main scheme is as follows: acquire 3D tooth point cloud data, construct a 3D tooth point cloud dataset and perform data preprocessing; construct a 3D tooth point cloud semantic segmentation network and determine the loss function, and train the 3D tooth point cloud semantic segmentation network based on the loss function; use the trained 3D tooth point cloud semantic segmentation network to perform point-by-point semantic prediction on the point cloud of the tooth row to be tested, and obtain the point-level category probability distribution; perform multi-level probability smoothing and interpolation recovery on the point-level category probability distribution to improve the spatial continuity of the prediction results and restore the original point cloud resolution; perform density-adaptive connectivity analysis and denoising processing on the restored point cloud segmentation results to extract single tooth instances; and use instance-level category statistics for each single tooth instance to determine the final semantic category, thereby realizing tooth type recognition.

An automated method for aligning a 3D single tooth model to 3D oral scan data includes determining an oral scan landmark and a teeth curve formed by teeth in the 3D oral scan data, determining a margin line of a target tooth in the 3D oral scan data and a region of interest in the 3D oral scan data, determining first to third axes of the 3D oral scan data in the region of interest based on the oral scan landmark, determining a single tooth landmark of the 3D single tooth model, determining fourth to sixth axes of the 3D single tooth model based on the single tooth landmark and aligning the 3D single tooth model to the 3D oral scan data such that the fourth to sixth axes of the 3D single tooth model respectively overlap the first to third axes of the 3D oral scan data.

The application relates to the technical field of laser processing, in particular to a mechanical part processing laser cutting equipment which comprises a base, a processing part, a workbench, a single-tooth plug-in part, a cleaning module, a control box one, a material receiving part, a spare part module and a control box two, the upper side of the base is provided with the processing part, the upper side of the base is provided with the workbench, the workbench comprises a pedestal fixed to the upper side of the base, a plurality of assembly grooves are arranged at equal intervals on the upper part of the front and back sides of the pedestal, support beams are fixedly connected to the inner sides of the assembly grooves, and positioning air channels are arranged on the inner sides of the support beams and penetrate through the front and back sides. In the application, the cleaning module, the workbench, the single-tooth plug-in part and the spare part module are arranged, so that when the support structure of the laser cutting equipment needs to be cleaned, the new support structure can be automatically replaced, and the old support structure to be cleaned can be automatically cleaned, thereby reducing the influence of the support cleaning operation on the laser processing efficiency.

The device comprises a container (1), a shell body (2) including an upper shell portion (21) rotatable relative to an inner shell portion (22), an indicator (3) including a threaded rod (31) rotatable on the inner shell portion, and an indicator element (32) that indicates a number of atomizations by its position on the threaded rod. The threaded rod includes a transmission gear, and the upper shell portion has a drive portion for the threaded rod. The transmission gear includes P teeth, and the drive portion has at most two single-tooth elements, such that P or 2P rotational movements displace the indicator element (32) one stroke along the threaded rod to allow a number of atomizations of the device P or 2P times a total stroke provided by the threaded rod in the axial direction. Figure 1

The machining method comprises the steps that firstly, a to-be-machined chain wheel workpiece is installed on a four-axis numerical control machine tool, and a chain wheel rotates around a rotating shaft A; secondly, the machining zero point of a single tooth profile of the chain wheel workpiece to be machined is determined; thirdly, a numerical control machining program of the single tooth profile track of the chain wheel workpiece to be machined is compiled in a fitting mode; fourthly, a single sprocket tooth form is machined through profiling milling according to the numerical control machining program of the single tooth form track; fifthly, the chain wheel workpiece to be machined rotates on the YZ plane, the next tooth profile machining zero point is determined, the corresponding tooth profile is machined again, and machining of all chain wheel tooth profiles on the single-row circumference is completed; and sixthly, moving in the X-axis direction, and repeating the steps to complete machining of all tooth profiles of the multiple rows of chain wheels. Machining of the tooth shape of the chain wheel is completed through milling, the requirement for the tooth surface coincidence degree between multiple rows of large-interval chain wheel teeth is met through improvement, and meanwhile it is guaranteed that the tooth surface roughness reaches the requirement of Ra1.6 or above.

The application aims to provide an improved method for considering the lateral stiffness and the corner stiffness of the spline coupling with misalignment, comprising the following steps: establishing a schematic diagram of the load and deformation of the misaligned spline coupling, deducing the load and deformation balance equation of the misaligned spline engagement state according to the deformation geometry of the misaligned spline; deducing the single-tooth engagement stiffness according to the energy method, correcting the gear tooth engagement stiffness; bringing the single-tooth engagement stiffness of the spline obtained in step (2) into the engagement force balance equation obtained in step (1), and calculating the lateral stiffness and the corner stiffness of the misaligned spline coupling. Through comparison with the finite element results, the calculation results of the application are more efficient, and the vacancy of the calculation method of the lateral stiffness and the corner stiffness of the spline coupling under the misalignment condition at the present stage is made up.

The invention discloses a control method of an electric toothbrush and the electric toothbrush, and relates to the technical field of electric toothbrushes. The control method of the electric toothbrush comprises the following steps: step S10, acquiring current effective tooth brushing times in an adaptive phase mode; s20, based on the effective tooth brushing times, the brush head is controlled to operate at the corresponding vibration frequency and / or vibration intensity, and when the duration of single tooth brushing reaches the preset effective tooth brushing duration, one is added to the effective tooth brushing times; wherein the corresponding vibration frequency and / or vibration intensity are / is gradually increased along with the increase of the effective tooth brushing times. And S30, after the effective tooth brushing times reach the preset effective tooth brushing times, exiting the adaptation period mode. According to the electric toothbrush, the vibration frequency and / or the vibration intensity are / is gradually enhanced for cleaning, and the technical problem that an existing electric toothbrush adopts the fixed vibration frequency and intensity for cleaning, so that a user feels uncomfortable in use is solved.

The invention relates to the technical field of numerical control machine tools, and discloses a single-tooth cutter machining device of a countersink structure, which comprises a countersink drill and a driving mechanism, the driving mechanism is connected with the countersink drill and is used for driving the countersink drill to horizontally move along X, Y and Z axes and rotate, a workpiece to be machined is arranged under the countersink drill, a guide sleeve is mounted at the lower end part of the countersink drill, and the guide sleeve is connected with the countersink drill. The guide sleeve comprises a connecting column and a guide column, an adjusting mechanism is installed in the guide column, and the adjusting mechanism is used for stretching out of the interior of the guide column when the guide column rotates at the bottom of the connecting column; in the using process, a worker rotates the guide column in advance so that the guide column can rotate at the lower end of the connecting column, the adjusting mechanism can extend out of the guide column in the radial direction through rotation of the guide column, the diameter of the guide column is indirectly enlarged through extension of the adjusting mechanism, and by adjusting the different diameters of the guide column, the working efficiency is improved. The guide pillar can extend into holes with different apertures, so that the problem that the guide pillar needs to be replaced when facing the holes with different apertures is avoided, and the processing efficiency of the counter bit is indirectly improved.

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.

This invention relates to a method for obtaining the comprehensive meshing stiffness of a spiral bevel gear. The method specifically comprises: S1: Based on multi-tooth pair and meshing state analysis, and combining the given gear displacement angle and the rotation angle of the target tooth pair at the theoretical meshing position, obtaining the single tooth pairs that generate contact; S2: Based on the penetration amount between single tooth pairs and the meshing stiffness between single tooth pairs, obtaining the distributed load of all tooth pairs that generate contact; S3: Based on the deformation amount between single tooth pairs and the distributed load, obtaining the comprehensive meshing stiffness under multi-tooth meshing conditions. This invention incorporates the penetration amount between tooth pairs, more closely approximating the actual situation, thus reducing the error compared to reality.

This invention discloses a method for registering IOS and CBCT images based on particle swarm optimization and single-tooth optimization, belonging to the field of image data processing. The method includes the following steps: Preprocessing and segmentation steps are used to obtain the semantic segmentation results of teeth from IOS and CBCT images, as well as point cloud data; a particle swarm optimization algorithm is introduced to iteratively search and optimize the six-degree-of-freedom rigid transformation parameters between the IOS and CBCT image data, thereby completing the initial global registration at the dental arch scale; using the globally registered result as a basis, the registration object is divided into multiple local units based on a single tooth, and local iterative alignment is performed on each unit to eliminate minor misalignments on individual teeth and optimize the overall registration effect. This invention, based on handling cross-modal differences and achieving global registration, further ensures registration accuracy at the single-tooth level through a local optimization mechanism, providing reliable automated registration support for clinical scenarios such as orthodontics and implantology.

The invention discloses an AI-assistance-based rapid adaptation method for pre-crowning of children, and belongs to the field of digital diagnosis and treatment of the dental department of children. The method comprises the following steps: 1, importing oral scanning data (. Stl / . Dcm / . Ply format) of a child patient; 2, a doctor selects target diseased teeth in the three-dimensional model; 3, performing AI segmentation on the dental crown, automatically positioning an adjacent point and a cheek-tongue highest point of a single diseased tooth, calculating a near-far intermediate diameter and a cheek-tongue diameter, and positioning a measurement point and calculating the size after AI simulation segmentation positions of a plurality of continuous diseased teeth; 4, simulation matching is conducted on the AI according to the size and the preformed crown model; 5, outputting a TOP3 model, a matching degree score and a three-dimensional superposition comparison graph; and 6, clinically verifying the adaptive effect. According to the method, manual errors are eliminated, second-level matching is achieved, multiple brands are adapted, the crown edge adaptability is improved, the matching time is shortened to 3 seconds per tooth, the measurement error is + / -0.05 mm, and the first-time adaptation rate is larger than or equal to 92%.