System and method for step-by-step micro-adjustment of silica gel appliance and silica gel appliance

Abstract

The invention provides a step-by-step micro-adjustment silica gel appliance system which comprises a plurality of silica gel appliances numbered in sequence, a data acquisition module, a multi-stage appliance three-dimensional digital model construction module, a mechanical simulation optimization module and a manufacturing driving module, the complete process of tooth jaw correction is decomposed into a plurality of tooth target pose stage data through initial three-dimensional data of an initial tooth jaw and target three-dimensional data of a target position tooth jaw, a plurality of continuous tooth target pose stage appliance three-dimensional digital models are constructed in a combined mode, and mechanical simulation optimization is carried out. Therefore, accurate decomposition of the silica gel appliance is improved, a series of manufactured customized silica gel appliances which are worn for a short time sequentially realize trace and gradual movement of teeth, and correction precision, comfort and safety are greatly improved.

Description

Technical Field

[0001] This application relates to the field of orthodontic appliance manufacturing technology, specifically to a step-by-step micro-adjustment silicone orthodontic appliance system, a method for manufacturing a step-by-step micro-adjustment silicone orthodontic appliance, and a step-by-step micro-adjustment silicone orthodontic appliance. Background Technology

[0002] Silicone braces have become a widely used orthodontic tool in clinical practice. Each patient typically uses 2-3 sets of silicone braces every 1-1.5 years. Each set usually involves significant tooth and jaw movement, therefore a new set is replaced every six months. When replacing, a new silicone braces is manufactured by a technician based on the patient's current condition. Due to the slow replacement frequency (every six months), there are drawbacks such as low treatment efficiency, long total treatment time, and insufficient response to changes in the patient's teeth and jaw. Furthermore, because they are handmade, the design and manufacturing precision is low, resulting in unstable design and poor repeatability even for the same patient.

[0003] Currently, another widely used type of digital invisible aligner in clinical practice is made of plastic. Although it can achieve digital and refined design and production processes, due to the limitations of material properties, the amount of tooth movement per step is extremely small. For example, the movement of canines and molars is only about 0.2mm per step. Each cycle often requires 30-60 invisible aligners, and on average, it takes 2-4 or even more cycles until the treatment is completed.

[0004] Therefore, how to design a new type of silicone orthodontic appliance that can fully utilize the elastic properties of silicone rubber material and can be replaced more frequently and adjusted slightly for each tooth and jawbone through digital and standardized design and production has become an urgent problem to be solved by those skilled in the art.

[0005] Therefore, how to design a precise orthodontic treatment mode that involves step-by-step replacement and minor adjustments has become an urgent problem for professionals in this field. Summary of the Invention

[0006] This application provides a step-by-step micro-adjustment silicone orthodontic appliance system to address the problem in the prior art of designing a novel silicone orthodontic appliance that can fully utilize the elastic properties of silicone rubber material and achieve faster replacement frequency and step-by-step micro-adjustment of teeth and jawbone through digital and standardized design and production. This has become an urgent problem for those skilled in the art. This application also provides a method for manufacturing a step-by-step micro-adjustment silicone orthodontic appliance.

[0007] This application provides a step-by-step micro-adjustment silicone orthodontic appliance system, comprising: Multiple sequentially numbered silicone orthodontic appliances constitute an orthodontic sequence. Each silicone orthodontic appliance is customized according to the three-dimensional morphology of the patient's oral cavity at a specific orthodontic stage, and the morphology of the cavity containing the teeth is different and continuously changing. A digital design and manufacturing system is used to manufacture the multiple sequentially numbered silicone orthodontic appliances. The digital design and manufacturing system includes: The data acquisition module is used to acquire the initial three-dimensional data of the user's initial jaw and the target three-dimensional data of the target jaw; Multi-stage orthodontic appliance 3D digital model construction module: used to decompose the complete orthodontic process into multiple target tooth pose stage data based on the initial 3D data of the initial dentition and the target 3D data of the target dentition, and to construct multiple continuous stage 3D digital models of the orthodontic appliance based on the target tooth pose stage data. Mechanical simulation and optimization module: used to perform mechanical simulation on the three-dimensional digital model of the orthodontic appliance at each stage, analyze the stress distribution information of the teeth, jawbone and periodontal tissues when the appliance is worn at the corresponding stage, and optimize the tooth target pose stage data of the three-dimensional digital model of the orthodontic appliance at that stage based on the stress distribution information, and determine that the orthodontic force value of the three-dimensional digital model of the orthodontic appliance at that stage is within a safe and effective range. Manufacturing drive module: It is used to convert the target correction data output from the optimized three-dimensional digital models of the multiple stages of the orthodontic appliance into manufacturing instructions, and drive the printing equipment to manufacture the corresponding orthodontic appliance mold or print the corresponding orthodontic appliance prototype manufacturing steps according to the manufacturing instructions, and manufacture multiple silicone orthodontic appliances for one orthodontic sequence.

[0008] Optionally, the step of decomposing the complete orthodontic process into multiple target tooth pose stage data based on the initial three-dimensional data of the initial dentition and the target three-dimensional data of the target dentition, and constructing multiple consecutive three-dimensional digital models of the orthodontic appliance for multiple stages based on the target tooth pose stage data, includes: Based on the initial three-dimensional data of the initial jaw and the target three-dimensional data of the target jaw, the total tooth movement path from the initial jaw to the target jaw is planned. The total tooth movement path is divided into multiple consecutive tooth pose target stages, and tooth target pose stage data for each tooth pose target stage is obtained. Multiple initial stage orthodontic appliance 3D digital models are constructed, and the corresponding initial stage orthodontic appliance 3D digital models are iteratively trained based on the target tooth pose stage data. The output results of the initial stage orthodontic appliance 3D digital models are compared with preset standard parameters. If the comparison results are consistent, multiple stage orthodontic appliance 3D digital models are obtained.

[0009] Optionally, the step of planning the total tooth movement path from the initial jaw to the target jaw based on the initial three-dimensional data of the initial jaw and the target three-dimensional data of the target jaw includes: Each tooth is automatically segmented and semantically labeled based on its alignment, occlusion, and the desired state after correction. Analyze the degrees of freedom of motion of each tooth in three-dimensional space to construct the pose transformation of a single tooth from the initial jaw position to the target jaw position; The movement path type of each tooth is determined, and the interpolation strategy corresponding to each tooth is determined according to the movement path type to obtain the movement path corresponding to each tooth. The movement paths of each tooth are coordinated and planned to obtain the total tooth movement path from the initial jaw to the target jaw.

[0010] Optionally, the step of dividing the total tooth movement path into multiple consecutive tooth pose target stages and obtaining tooth target pose stage data for each of the tooth pose target stages includes: The total tooth movement path is divided into N consecutive stages according to a preset constraint dimension, which includes at least a geometric displacement dimension, an angle change dimension, a biological response dimension, and a clinical cycle dimension; the number of stages N is determined by the tooth with the largest displacement. Obtain three-dimensional data of the target pose that each tooth should achieve at the end of each stage; The three-dimensional data is optimized according to a preset optimization strategy to obtain the target tooth pose stage data.

[0011] Optionally, the preset optimization strategy includes at least: a strategy for interdental occlusion, a strategy for reasonable adjustment range, and a strategy for maintaining a reasonable connection between displacement targets at each stage.

[0012] Optionally, the mechanical simulation of the three-dimensional digital model of the orthodontic appliance at each stage, and the analysis of the stress distribution information acting on the teeth, jawbone, and periodontal tissues when the appliance is worn at the corresponding stage, includes: The environmental conditions of each stage of the orthodontic appliance under the three-dimensional digital model of each stage are determined when it is worn in each stage, and the effective area of ​​each stage of the orthodontic appliance is simulated using a preset analysis method. Determine the mechanical data of the orthodontic appliance for each stage at that stage; Based on the mechanical data of each stage appliance at that stage, the function of each stage appliance relative to each tooth is analyzed, and the stress transmission data to each tooth and periodontal tissue is calculated.

[0013] Optionally, the step of feeding back and optimizing the tooth target pose stage data of the three-dimensional digital model of the orthodontic appliance based on the stress distribution information, and determining that the orthodontic force value of the three-dimensional digital model of the orthodontic appliance in this stage is within a safe and effective range, includes: Based on the simulation results, the design parameters of the three-dimensional digital model of the stage orthodontic appliance are adjusted; the design parameters include at least the occlusal angle, tooth length adjustment amount, bone length change range, and the material and shape parameters of the orthodontic appliance. Optimization of each stage of the orthodontic appliance under the three-dimensional digital model of each stage; Using a genetic algorithm or simulated annealing method, the design parameters are iteratively optimized to determine that the corrective force value of the three-dimensional digital model of the orthodontic appliance for this stage is within a safe and effective range.

[0014] Optionally, acquiring the initial three-dimensional data of the user's initial jaw and the target three-dimensional data of the target jaw includes: Scan and collect dental images corresponding to the user's maxillary dentition, mandibular dentition, and occlusion records.

[0015] Dental software is used to convert the coordinates of points in the dental images into coordinates in three-dimensional space, and to generate initial three-dimensional data. Using a dental data platform, and simulating the tooth alignment operation for each tooth based on the input initial 3D data, candidate 3D data are obtained; The candidate 3D data are verified according to preset occlusion verification parameters to select target 3D data of the target tooth jaw from the candidate 3D data; the preset occlusion verification parameters include at least dynamic occlusion simulation verification, adjacent relationship verification, and root safety verification.

[0016] This application also provides a method for manufacturing a step-by-step micro-adjustment silicone orthodontic appliance, comprising: Acquire the initial 3D data of the user's initial jaw and the target 3D data of the target jaw; Based on the initial three-dimensional data of the initial jaw and the target three-dimensional data of the target jaw, the complete process of orthodontic treatment is decomposed into multiple target tooth pose stage data, and multiple continuous stage three-dimensional digital models of the orthodontic appliance with target tooth pose are constructed based on the target tooth pose stage data. Mechanical simulation is performed on the three-dimensional digital model of the orthodontic appliance for each stage. The stress distribution information acting on the teeth, jawbone and periodontal tissues when the appliance is worn at the corresponding stage is analyzed. Based on the stress distribution information, the target tooth pose stage data of the three-dimensional digital model of the orthodontic appliance for that stage is fed back and optimized, and the orthodontic force value of the three-dimensional digital model of the orthodontic appliance for that stage is determined to be within a safe and effective range. The target correction data output from the optimized multi-stage three-dimensional digital model of the orthodontic appliance is converted into manufacturing instructions. Based on the manufacturing instructions, the printing equipment is driven to manufacture the corresponding orthodontic appliance mold or print the corresponding orthodontic appliance prototype manufacturing steps, and multiple orthodontic appliances for one orthodontic sequence are manufactured.

[0017] The application also provides a step-by-step micro-adjustment silicone orthodontic appliance, which is manufactured using the aforementioned step-by-step micro-adjustment silicone orthodontic appliance system, comprising: Multiple sequentially numbered silicone orthodontic appliances constitute an orthodontic sequence. Each silicone orthodontic appliance is customized according to the three-dimensional morphology of the patient's oral cavity at a specific orthodontic stage, and the morphology of the dentition cavity is different and continuously changing.

[0018] Compared with the prior art, this application has the following advantages: This application provides a step-by-step micro-adjustment silicone orthodontic appliance system, comprising: multiple sequentially numbered silicone orthodontic appliances, the multiple silicone orthodontic appliances constituting an orthodontic sequence, each silicone orthodontic appliance being customized according to the three-dimensional morphology of the patient's oral cavity at a specific orthodontic stage, the morphology of the dentition cavity being different and continuously changing; a digital design and manufacturing system for manufacturing the multiple sequentially numbered silicone orthodontic appliances, the digital design and manufacturing system comprising: a data acquisition module for acquiring initial three-dimensional data of the user's initial dentition and target three-dimensional data of the target dentition; and a multi-stage orthodontic appliance three-dimensional digital model construction module for decomposing the complete orthodontic process into multiple target tooth pose stage data based on the initial three-dimensional data of the initial dentition and the target three-dimensional data of the target dentition, and constructing a multi-stage orthodontic appliance three-dimensional digital model based on the target tooth pose stage data. The system constructs multiple continuous three-dimensional digital models of orthodontic appliances for each stage, based on segmented data. A mechanical simulation and optimization module performs mechanical simulation on each stage's three-dimensional digital model, analyzing the stress distribution information acting on the teeth, jawbone, and periodontal tissues during appliance wear. This stress distribution information is used to feed back and optimize the tooth target pose stage data of the three-dimensional digital model for that stage, ensuring the orthodontic force value of the stage's three-dimensional digital model is within a safe and effective range. A manufacturing drive module converts the optimized target correction data output from the multiple stage three-dimensional digital models into manufacturing instructions. Based on these instructions, it drives a printing device to manufacture the corresponding appliance mold or print the corresponding appliance prototype manufacturing steps, producing multiple silicone appliances for a single orthodontic sequence.

[0019] This application describes a step-by-step micro-adjustment silicone orthodontic appliance system that decomposes the entire orthodontic process into multiple target tooth position stages using initial three-dimensional data of the initial dentition and target three-dimensional data of the target dentition. This is combined with the construction of multiple continuous stage three-dimensional digital models of the orthodontic appliance based on target tooth positions, as well as mechanical simulation optimization. This improves the precision of the silicone orthodontic appliance, enabling a series of short-term customized silicone orthodontic appliances to sequentially achieve micro- and gradual tooth movement, thereby significantly improving orthodontic accuracy, comfort, and safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a step-by-step micro-adjustment silicone orthodontic appliance system provided in the first embodiment of this application.

[0021] Figure 2 A flowchart illustrating a method for manufacturing a silicone bracket orthodontic appliance, provided in the second embodiment of this application.

[0022] Figure 3 This is a schematic diagram of a step-by-step micro-adjustment silicone orthodontic device provided in the third embodiment of this application.

[0023] Figure label: Data acquisition module 10, three-dimensional digital model construction module for staged orthodontic appliances 20, mechanical simulation and optimization module 30, manufacturing drive module 40, silicone orthodontic appliance 300. Detailed Implementation

[0024] Many specific details are set forth in the following description to provide a full understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed below.

[0025] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] Silicone braces have become a widely used orthodontic tool in clinical practice. Each patient typically uses 2-3 sets of silicone braces every 1-1.5 years. Each set usually involves significant tooth and jaw movement, therefore a new set is replaced every six months. When replacing, a new silicone braces is manufactured by a technician based on the patient's current condition. Due to the slow replacement frequency (every six months), there are drawbacks such as low treatment efficiency, long total treatment time, and insufficient response to changes in the patient's teeth and jaw. Furthermore, because they are handmade, the design and manufacturing precision is low, resulting in unstable design and poor repeatability even for the same patient.

[0028] Currently, another widely used type of digital invisible aligner in clinical practice is made of plastic. Although it can achieve digital and refined design and production processes, due to the limitations of material properties, the amount of tooth movement per step is extremely small. For example, the movement of canines and molars is only about 0.2mm per step. Each cycle often requires 30-60 invisible aligners, and on average, it takes 2-4 or even more cycles until the treatment is completed.

[0029] Therefore, how to design a new type of silicone orthodontic appliance that can fully utilize the elastic properties of silicone rubber material and can be replaced more frequently and adjusted slightly for each tooth and jawbone through digital and standardized design and production has become an urgent problem to be solved by those skilled in the art.

[0030] Accordingly, this application provides a step-by-step micro-adjustment silicone orthodontic appliance system to solve the problem in the prior art of how to replace and make micro-adjustments in stages to design precise orthodontic appliances. This application also provides a method for manufacturing a step-by-step micro-adjustment silicone orthodontic appliance and a step-by-step micro-adjustment silicone orthodontic appliance.

[0031] The present application will be described in detail below with reference to specific embodiments and accompanying drawings.

[0032] First Embodiment The first embodiment of this application provides a step-by-step micro-adjustment silicone orthodontic appliance system, which is described below in conjunction with... Figure 1 This step-by-step micro-adjustment silicone orthodontic appliance system is described in detail. Figure 1 This is a schematic diagram of a step-by-step micro-adjustment silicone orthodontic device system provided in the first embodiment of this application.

[0033] Specifically, in this embodiment, the step-by-step micro-adjustment silicone orthodontic appliance system includes: multiple sequentially numbered silicone orthodontic appliances, which constitute an orthodontic sequence. Each silicone orthodontic appliance is customized according to the three-dimensional morphology of the patient's oral cavity at a specific orthodontic stage, and the morphology of the dentition cavity is different for each appliance and changes continuously. A digital design and manufacturing system is used to manufacture the multiple sequentially numbered silicone orthodontic appliances. The digital design and manufacturing system includes: a data acquisition module 10, used to acquire the initial three-dimensional data of the user's initial jaw and the target three-dimensional data of the target jaw; and a multi-stage orthodontic appliance three-dimensional digital model construction module 20, used to decompose the complete orthodontic process into multiple tooth target pose stage data based on the initial three-dimensional data of the initial jaw and the target three-dimensional data of the target jaw, and to construct multiple continuous tooth target pose stage three-dimensional digital models of the orthodontic appliances based on the tooth target pose stage data. The mechanical simulation and optimization module 30 is used to perform mechanical simulation on the three-dimensional digital model of the orthodontic appliance at each stage, analyze the stress distribution information acting on the teeth, jawbone, and periodontal tissues when the appliance is worn at the corresponding stage, and optimize the tooth target pose stage data of the three-dimensional digital model of the orthodontic appliance at that stage based on the stress distribution information, to determine that the orthodontic force value of the three-dimensional digital model of the orthodontic appliance at that stage is within a safe and effective range. The manufacturing drive module 40 is used to convert the target correction data output from the optimized three-dimensional digital models of the orthodontic appliances at multiple stages into manufacturing instructions, and drive the printing equipment to manufacture the corresponding appliance mold or print the corresponding appliance prototype manufacturing steps according to the manufacturing instructions, and manufacture multiple silicone appliances for one orthodontic sequence.

[0034] In this embodiment, multiple silicone orthodontic appliances constitute a treatment sequence. Each silicone appliance is customized according to the three-dimensional morphology of the patient's oral cavity at a specific stage of treatment, and the shape of the dentition cavity is different for each appliance and changes continuously. In one example, each silicone appliance contains fluoride. Of course, in another example, each silicone appliance does not contain fluoride.

[0035] In this embodiment, the data acquisition module 10 is used to acquire the initial three-dimensional data of the user's initial jaw and the target three-dimensional data of the target jaw, specifically including the following steps: First, the dental images corresponding to the user's maxillary and mandibular dentition and occlusion records are scanned and collected. Specifically, the length and width information of the upper and lower dentitions, the morphological information of the labial / buccal and lingual contours of the upper and lower dentitions, and the gingival position information of each tooth in the upper and lower dentitions are obtained. In one example, the width information of each upper and lower dentition can be calculated and fitted using incisor width, intercanine width, and intermolar width. Simultaneously with obtaining the incisor width, intercanine width, and intermolar width, the corresponding positional information of each incisor, canine, and molar can be obtained. Based on the incisor width, intercanine width, and intermolar width and their corresponding positional information, the length information of the upper and lower dentitions is obtained. Then, based on the length and width information of the upper and lower dentitions, the distance between the occlusal surfaces of the upper and lower dentitions is obtained. The distance between the occlusal surfaces clearly indicates the degree of maxillary and mandibular opening. In one example, the morphology of the labial / buccal and lingual contours of the upper and lower dentitions, as well as the gingival position of each tooth in the upper and lower dentitions, is obtained. Then, the morphology of the labial / buccal and lingual contours and the gingival positions of each tooth are smoothed by connecting lines to determine the standard morphology after processing. For example, based on the smoothed gingival position lines between two teeth in different dentition regions (such as incisors, canines, molars, etc.), the outer wall length of the digital model of the orthodontic appliance is fitted and adjusted. The outer wall length is sufficient to ensure that the appliance does not compress the gingiva; if the outer wall length of the appliance does not reach the gingival position, it is incorrect. Finally, the corresponding dentition images are obtained based on the length and width information of the upper and lower dentitions, the morphological information of the labial / buccal and lingual contours of the upper and lower dentitions, and the gingival position information of each tooth in the upper and lower dentitions.

[0036] Then, dental software is used to convert the point coordinates in the dental image into three-dimensional coordinates and generate initial three-dimensional data. Specifically, the dental image is imported, and the point coordinates in the image are converted into three-dimensional coordinates, that is, the dental image is converted into a point cloud. For example, each point contains (x, y, z) coordinates and may contain RGB color or a normal vector. In one example, the dental software includes orthodontic planning software.

[0037] Then, a dental data platform is used to simulate the tooth alignment operation for each tooth based on the input initial 3D data, in order to obtain candidate 3D data. Specifically, the 3D view of the dental data platform is rotated and observed from multiple angles before the tooth alignment operation is performed. Examples of typical tooth alignment operations are shown in the table below: After the tooth alignment operation is completed, candidate 3D data can be obtained.

[0038] Finally, the candidate 3D data are verified according to preset occlusal verification parameters to select the target 3D data for the target tooth position. The preset occlusal verification parameters include at least dynamic occlusal simulation verification, adjacent relationship verification, and root safety verification.

[0039] After obtaining the initial three-dimensional data of the user's initial jaw and the target three-dimensional data of the target jaw, a multi-stage orthodontic appliance three-dimensional digital model can be constructed. That is, the multi-stage orthodontic appliance three-dimensional digital model construction module 20 in this example is used to decompose the complete process of orthodontic treatment into multiple target tooth pose stage data based on the initial three-dimensional data of the initial jaw and the target three-dimensional data of the target jaw, and construct multiple continuous target tooth pose stage three-dimensional digital models of the orthodontic appliance based on the target tooth pose stage data.

[0040] In this embodiment, the complete orthodontic process is decomposed into multiple target tooth pose stages based on the initial three-dimensional data of the initial jaw and the target three-dimensional data of the target jaw. Multiple consecutive target tooth pose stages are then constructed using these target tooth pose stages to create a multi-stage three-dimensional digital model of the orthodontic appliance. This includes step s101, planning the total tooth movement path from the initial jaw to the target jaw based on the initial three-dimensional data of the initial jaw and the target three-dimensional data of the target jaw. Specifically, firstly, each tooth is automatically segmented and semantically labeled based on tooth alignment, occlusal relationship, and the desired post-correction state. Then, the degrees of freedom of each tooth in three-dimensional space are analyzed to construct the pose transformation of a single tooth from the initial jaw to the target jaw. Next, the movement path type of each tooth is determined, and an interpolation strategy is determined based on the movement path type to obtain the movement path corresponding to each tooth. The relationship between the movement path type and the interpolation strategy is shown in the table below. Finally, the movement paths of each tooth are coordinated and planned to obtain the total tooth movement path from the initial occlusal position to the target occlusal position. For example, adjacent teeth can be moved alternately by time-shifting (e.g., moving #12 first, then #11). Furthermore, the movement paths of the upper and lower jaws must meet the requirements of staged occlusal stability to prevent premature contact or open bite. Additionally, the path of anchor teeth (such as molars) should be as short as possible or zero, and virtual anchorage points for micro-implants should be introduced when necessary.

[0041] Step s102 involves dividing the total tooth movement path into multiple consecutive tooth pose target stages and obtaining tooth target pose stage data for each stage. Specifically, firstly, the total tooth movement path is divided into N consecutive stages according to preset constraint dimensions, which include at least geometric displacement dimension, angle change dimension, biological response dimension, and clinical cycle dimension. The number of stages N is determined by the tooth with the largest displacement. Then, three-dimensional data of the target pose that each tooth should achieve at the end of each stage is obtained. Finally, the three-dimensional data is optimized according to a preset optimization strategy to obtain tooth target pose stage data. In this step, the preset optimization strategy includes at least: a strategy for interdental occlusal relationships, a strategy for reasonable adjustment ranges, and a strategy for maintaining a reasonable connection between the displacement targets of each stage.

[0042] Step s103: Construct multiple initial stage orthodontic appliance three-dimensional digital models, and iteratively train the corresponding initial stage orthodontic appliance three-dimensional digital models according to the target tooth pose stage data. Compare the output results of the initial stage orthodontic appliance three-dimensional digital models with preset standard parameters. If the comparison results are consistent, multiple stage orthodontic appliance three-dimensional digital models are obtained.

[0043] After constructing three-dimensional digital models of orthodontic appliances for multiple stages, in order to ensure that the silicone orthodontic appliances produced by the three-dimensional digital models of each stage are more in line with the orthodontic needs of each stage, it is also necessary to conduct mechanical analysis on the three-dimensional digital models of orthodontic appliances for each stage.

[0044] Specifically, in this embodiment, the mechanical simulation optimization module 30 is used to perform mechanical simulation on the three-dimensional digital model of the orthodontic appliance at each stage, analyze the stress distribution information of the teeth, jawbone and periodontal tissues when the orthodontic appliance is worn at the corresponding stage, and optimize the tooth target pose stage data of the three-dimensional digital model of the orthodontic appliance at that stage based on the stress distribution information, and determine that the orthodontic force value of the three-dimensional digital model of the orthodontic appliance at that stage is within a safe and effective range.

[0045] The process involves mechanical simulation of the 3D digital model of the orthodontic appliance for each stage, analyzing the stress distribution information acting on the teeth, jawbone, and periodontal tissues during appliance wear at the corresponding stage. This includes: first, determining the environmental conditions of the appliance under each stage's 3D digital model during wear at each stage, including at least the mechanical properties of the periodontal tissues; and then simulating the area of ​​action of the appliance during wear at each stage using a preset analysis method. In one example, the preset analysis method includes finite element analysis or linear emission analysis. Specifically, simulating the area of ​​action of the appliance during wear at each stage using the preset analysis method includes: constructing an initial data finite element model for each stage using appliance data, target tooth data, adjacent tooth data, periodontal ligament data, alveolar bone data, etc. Then, applying displacement or force boundary conditions, for example, moving the appliance onto the current dentition (i.e., applying a displacement boundary consistent with the design displacement), and calculating the resulting orthodontic force. Alternatively, directly applying the contact force generated by material rebound. Subsequently, the initial data finite element model outputs key indicators, including: stress / strain distribution: identifying tension zones (bone resorption) and pressure zones (bone deposition) within the periodontal ligament; orthodontic force magnitude and direction: quantifying the three-dimensional force and torque acting on each target tooth; tooth displacement prediction: predicting the actual achievable displacement at this stage; and appliance fit analysis: assessing the risk of clinical problems such as marginal lifting and local dislocation. Finally, multi-stage iterative optimization is performed. If the simulation at a certain stage shows excessive force (potentially leading to root resorption) or insufficient displacement, feedback is used to adjust the design for the next stage (e.g., adding overcorrection, adding attachments, optimizing thickness) to obtain the final data finite element model.

[0046] Then, the mechanical data of each stage appliance in that stage are determined. The mechanical data of the stage appliance in that stage includes the force / torque exerted on the appliance relative to each tooth, the periodontal ligament stress / strain, and the appliance contact pressure. The mechanical data of each stage appliance in that stage can be obtained using the aforementioned finite element model.

[0047] Finally, based on the mechanical data of each stage appliance at that stage, the functional effect of each stage appliance relative to each tooth is analyzed, and the stress transmission data to each tooth and periodontal tissue is calculated. The functional effect of the stage appliance relative to each tooth includes translation, tilting, rotation, torque, elongation / indentation, etc., of the stage appliance relative to each tooth. In this step, calculating the stress transmission data to each tooth and periodontal tissue includes: inputting the mechanical data of each stage appliance at that stage into the corresponding stage's finite element model, and calculating the stress propagation path and stress intensity experienced by each tooth and periodontal tissue.

[0048] In this embodiment, based on the feedback of the stress distribution information and the optimization of the tooth target pose stage data of the three-dimensional digital model of the orthodontic appliance for that stage, it is determined that the orthodontic force value of the three-dimensional digital model of the orthodontic appliance for that stage is within a safe and effective range. This includes: First, adjusting the design parameters of the three-dimensional digital model of the orthodontic appliance for that stage based on simulation results; the design parameters include at least the occlusal angle, tooth length adjustment, bone length change range, and material and shape parameters of the orthodontic appliance (such as material strength and size ratio). Then, optimizing the early stage, mid-stage, and late stage of the orthodontic appliance under each stage's three-dimensional digital model. Finally, using a genetic algorithm or simulated annealing method, the design parameters are iteratively optimized to determine that the orthodontic force value of the three-dimensional digital model of the orthodontic appliance for that stage is within a safe and effective range.

[0049] After determining the three-dimensional digital model of the stage orthodontic appliance, the manufacturing drive module 40 is used to convert the target correction data output by the optimized three-dimensional digital models of the stage orthodontic appliances into manufacturing instructions, and drive the printing equipment to manufacture the corresponding orthodontic appliance mold or print the corresponding orthodontic appliance prototype manufacturing steps according to the manufacturing instructions, and manufacture multiple silicone orthodontic appliances for one orthodontic sequence.

[0050] Specifically, the manufacturing steps include: converting the target correction data output from the optimized multi-stage three-dimensional digital model of the orthodontic appliance into manufacturing instructions, and driving the printing equipment to manufacture the corresponding orthodontic appliance mold or print the corresponding orthodontic appliance prototype according to the manufacturing instructions. These steps include: extracting and analyzing the target correction data output from the multi-stage three-dimensional digital model of the orthodontic appliance to obtain the corresponding manufacturing data, determining the manufacturing material according to the target correction data, and then driving the printing equipment to manufacture the corresponding orthodontic appliance mold or print the corresponding orthodontic appliance prototype according to the manufacturing data and the manufacturing material.

[0051] This application provides a step-by-step micro-adjustment silicone orthodontic appliance system, comprising: multiple sequentially numbered silicone orthodontic appliances, the multiple silicone orthodontic appliances constituting an orthodontic sequence, each silicone orthodontic appliance being customized according to the three-dimensional morphology of the patient's oral cavity at a specific orthodontic stage, the morphology of the dentition cavity being different and continuously changing; a digital design and manufacturing system for manufacturing the multiple sequentially numbered silicone orthodontic appliances, the digital design and manufacturing system comprising: a data acquisition module 10 for acquiring initial three-dimensional data of the user's initial dentition and target three-dimensional data of the target dentition; and a multi-stage orthodontic appliance three-dimensional digital model construction module 20 for decomposing the complete orthodontic process into multiple target tooth pose stage data based on the initial three-dimensional data of the initial dentition and the target three-dimensional data of the target dentition, and according to the target tooth pose stage... The system constructs multiple continuous three-dimensional digital models of orthodontic appliances for each stage, based on segmented data. A mechanical simulation and optimization module 30 performs mechanical simulation on each stage's three-dimensional digital model, analyzing the stress distribution information acting on the teeth, jawbone, and periodontal tissues during appliance wear. Based on this stress distribution information, it feeds back and optimizes the tooth target pose stage data of the three-dimensional digital model for that stage, determining that the orthodontic force value of the stage's three-dimensional digital model is within a safe and effective range. A manufacturing drive module 40 converts the optimized target correction data output from the multiple stage three-dimensional digital models into manufacturing instructions. Based on these instructions, it drives a printing device to manufacture the corresponding appliance mold or print the corresponding appliance prototype manufacturing steps, producing multiple silicone appliances for one orthodontic sequence.

[0052] This application describes a step-by-step micro-adjustment silicone orthodontic appliance system that decomposes the entire orthodontic process into multiple target tooth position stages using initial three-dimensional data of the initial dentition and target three-dimensional data of the target dentition. This is combined with the construction of multiple continuous stage three-dimensional digital models of the orthodontic appliance based on target tooth positions, as well as mechanical simulation optimization. This improves the precision of the silicone orthodontic appliance, enabling a series of short-term customized silicone orthodontic appliances to sequentially achieve micro- and gradual tooth movement, thereby significantly improving orthodontic accuracy, comfort, and safety.

[0053] Second Embodiment The first embodiment of this application provides a method for step-by-step micro-adjustment of silicone orthodontic appliances, which is described below in conjunction with... Figure 2 This step-by-step micro-adjustment silicone orthodontic appliance system is described in detail. Figure 2 This is a flowchart of a step-by-step micro-adjustment silicone orthodontic appliance method according to the first embodiment of this application. The step-by-step micro-adjustment silicone orthodontic appliance method includes the following steps: Step S201: Obtain the initial three-dimensional data of the user's initial jaw and the target three-dimensional data of the target jaw.

[0054] Obtaining the initial 3D data of the user's initial jaw and the target 3D data of the target jaw involves the following steps: First, the dental images corresponding to the user's maxillary and mandibular dentition and occlusion records are scanned and collected. Specifically, the length and width information of the upper and lower dentitions, the morphological information of the labial / buccal and lingual contours of the upper and lower dentitions, and the gingival position information of each tooth in the upper and lower dentitions are obtained. In one example, the width information of each upper and lower dentition can be calculated and fitted using incisor width, intercanine width, and intermolar width. Simultaneously with obtaining the incisor width, intercanine width, and intermolar width, the corresponding positional information of each incisor, canine, and molar can be obtained. Based on the incisor width, intercanine width, and intermolar width and their corresponding positional information, the length information of the upper and lower dentitions is obtained. Then, based on the length and width information of the upper and lower dentitions, the distance between the occlusal surfaces of the upper and lower dentitions is obtained. The distance between the occlusal surfaces clearly indicates the degree of maxillary and mandibular opening. In one example, the morphology of the labial / buccal and lingual contours of the upper and lower dentitions, as well as the gingival position of each tooth in the upper and lower dentitions, is obtained. Then, the morphology of the labial / buccal and lingual contours and the gingival positions of each tooth are smoothed by connecting lines to determine the standard morphology after processing. For example, based on the smoothed gingival position lines between two teeth in different dentition regions (such as incisors, canines, molars, etc.), the outer wall length of the digital model of the orthodontic appliance is fitted and adjusted. The outer wall length is sufficient to ensure that the appliance does not compress the gingiva; if the outer wall length of the appliance does not reach the gingival position, it is incorrect. Finally, the corresponding dentition images are obtained based on the length and width information of the upper and lower dentitions, the morphological information of the labial / buccal and lingual contours of the upper and lower dentitions, and the gingival position information of each tooth in the upper and lower dentitions.

[0055] Then, dental software is used to convert the point coordinates in the dental image into three-dimensional coordinates and generate initial three-dimensional data. Specifically, the dental image is imported, and the point coordinates in the image are converted into three-dimensional coordinates, that is, the dental image is converted into a point cloud. For example, each point contains (x, y, z) coordinates and may contain RGB color or a normal vector. In one example, the dental software includes orthodontic planning software.

[0056] Then, a dental data platform is used to simulate the tooth alignment operation for each tooth based on the input initial 3D data, in order to obtain candidate 3D data. Specifically, the 3D view of the dental data platform is rotated and observed from multiple angles before the tooth alignment operation is performed. Examples of typical tooth alignment operations are shown in the table below: After the tooth alignment operation is completed, candidate 3D data can be obtained.

[0057] Finally, the candidate 3D data are verified according to preset occlusal verification parameters to select the target 3D data for the target tooth position. The preset occlusal verification parameters include at least dynamic occlusal simulation verification, adjacent relationship verification, and root safety verification.

[0058] Step S202: Based on the initial three-dimensional data of the initial jaw and the target three-dimensional data of the target jaw, the complete process of orthodontic treatment is decomposed into multiple target tooth pose stage data, and multiple continuous stage three-dimensional digital models of the orthodontic appliance are constructed based on the target tooth pose stage data.

[0059] In this embodiment, the complete orthodontic process is decomposed into multiple target tooth pose stages based on the initial three-dimensional data of the initial jaw and the target three-dimensional data of the target jaw. Multiple consecutive target tooth pose stages are then used to construct a multi-stage three-dimensional digital model of the orthodontic appliance, including step s202-1: planning the total tooth movement path from the initial jaw to the target jaw based on the initial three-dimensional data of the initial jaw and the target three-dimensional data of the target jaw. Specifically, firstly, each tooth is automatically segmented and semantically labeled based on tooth alignment, occlusal relationship, and the desired post-correction state. Then, the degrees of freedom of each tooth in three-dimensional space are analyzed to construct the pose transformation of a single tooth from the initial jaw to the target jaw. Next, the movement path type of each tooth is determined, and an interpolation strategy is determined based on the movement path type to obtain the movement path corresponding to each tooth. The relationship between the movement path type and the interpolation strategy is shown in the table below. Finally, the movement paths of each tooth are coordinated and planned to obtain the total tooth movement path from the initial occlusal position to the target occlusal position. For example, adjacent teeth can be moved alternately by time-shifting (e.g., moving #12 first, then #11). Furthermore, the movement paths of the upper and lower jaws must meet the requirements of staged occlusal stability to prevent premature contact or open bite. Additionally, the path of anchor teeth (such as molars) should be as short as possible or zero, and virtual anchorage points for micro-implants should be introduced when necessary.

[0060] Step s202-2 involves dividing the total tooth movement path into multiple consecutive tooth pose target stages and obtaining tooth target pose stage data for each stage. Specifically, firstly, the total tooth movement path is divided into N consecutive stages according to preset constraint dimensions. These preset constraint dimensions include at least geometric displacement, angular change, biological response, and clinical cycle dimensions. The number of stages N is determined by the tooth with the largest displacement. Then, three-dimensional data of the target pose that each tooth should achieve at the end of each stage is obtained. Finally, the three-dimensional data is optimized according to a preset optimization strategy to obtain tooth target pose stage data. In this step, the preset optimization strategy includes at least: a strategy for interdental occlusion, a strategy for reasonable adjustment range, and a strategy for maintaining a reasonable connection between the displacement targets of each stage.

[0061] Step s202-3: Construct multiple initial stage orthodontic appliance three-dimensional digital models, and iteratively train the corresponding initial stage orthodontic appliance three-dimensional digital models according to the target tooth pose stage data. Compare the output results of the initial stage orthodontic appliance three-dimensional digital models with preset standard parameters. If the comparison results are consistent, multiple stage orthodontic appliance three-dimensional digital models are obtained.

[0062] Step S203: Perform mechanical simulation on the three-dimensional digital model of the orthodontic appliance for each stage, analyze the stress distribution information of the corresponding stage when the appliance is worn, and optimize the tooth target pose stage data of the three-dimensional digital model of the orthodontic appliance based on the stress distribution information, and determine that the orthodontic force value of the three-dimensional digital model of the orthodontic appliance for that stage is within a safe and effective range.

[0063] After constructing three-dimensional digital models of orthodontic appliances for multiple stages, in order to ensure that the silicone orthodontic appliances produced by the three-dimensional digital models of each stage are more in line with the orthodontic needs of each stage, it is also necessary to conduct mechanical analysis on the three-dimensional digital models of orthodontic appliances for each stage.

[0064] Specifically, in this embodiment, the mechanical simulation optimization module 30 is used to perform mechanical simulation on the three-dimensional digital model of the orthodontic appliance at each stage, analyze the stress distribution information of the teeth, jawbone and periodontal tissues when the orthodontic appliance is worn at the corresponding stage, and optimize the tooth target pose stage data of the three-dimensional digital model of the orthodontic appliance at that stage based on the stress distribution information, and determine that the orthodontic force value of the three-dimensional digital model of the orthodontic appliance at that stage is within a safe and effective range.

[0065] The process involves mechanical simulation of the 3D digital model of the orthodontic appliance for each stage, analyzing the stress distribution information acting on the teeth, jawbone, and periodontal tissues during appliance wear at the corresponding stage. This includes: first, determining the environmental conditions of the appliance under each stage's 3D digital model during wear at each stage, including at least the mechanical properties of the periodontal tissues; and then simulating the area of ​​action of the appliance during wear at each stage using a preset analysis method. In one example, the preset analysis method includes finite element analysis or linear emission analysis. Specifically, simulating the area of ​​action of the appliance during wear at each stage using the preset analysis method includes: constructing an initial data finite element model for each stage using appliance data, target tooth data, adjacent tooth data, periodontal ligament data, alveolar bone data, etc. Then, applying displacement or force boundary conditions, for example, moving the appliance onto the current dentition (i.e., applying a displacement boundary consistent with the design displacement), and calculating the resulting orthodontic force. Alternatively, directly applying the contact force generated by material rebound. Subsequently, the initial data finite element model outputs key indicators, including: stress / strain distribution: identifying tension zones (bone resorption) and pressure zones (bone deposition) within the periodontal ligament; orthodontic force magnitude and direction: quantifying the three-dimensional force and torque acting on each target tooth; tooth displacement prediction: predicting the actual achievable displacement at this stage; and appliance fit analysis: assessing the risk of clinical problems such as marginal lifting and local dislocation. Finally, multi-stage iterative optimization is performed. If the simulation at a certain stage shows excessive force (potentially leading to root resorption) or insufficient displacement, feedback is used to adjust the design for the next stage (e.g., adding overcorrection, adding attachments, optimizing thickness) to obtain the final data finite element model.

[0066] Then, the mechanical data of each stage appliance in that stage are determined. The mechanical data of the stage appliance in that stage includes the force / torque exerted on the appliance relative to each tooth, the periodontal ligament stress / strain, and the appliance contact pressure. The mechanical data of each stage appliance in that stage can be obtained using the aforementioned finite element model.

[0067] Finally, based on the mechanical data of each stage appliance at that stage, the functional effect of each stage appliance relative to each tooth is analyzed, and the stress transmission data to each tooth and periodontal tissue is calculated. The functional effect of the stage appliance relative to each tooth includes translation, tilting, rotation, torque, elongation / indentation, etc., of the stage appliance relative to each tooth. In this step, calculating the stress transmission data to each tooth and periodontal tissue includes: inputting the mechanical data of each stage appliance at that stage into the corresponding stage's finite element model, and calculating the stress propagation path and stress intensity experienced by each tooth and periodontal tissue.

[0068] In this embodiment, based on the feedback of the stress distribution information and the optimization of the tooth target pose stage data of the three-dimensional digital model of the orthodontic appliance for that stage, it is determined that the orthodontic force value of the three-dimensional digital model of the orthodontic appliance for that stage is within a safe and effective range. This includes: First, adjusting the design parameters of the three-dimensional digital model of the orthodontic appliance for that stage based on simulation results; the design parameters include at least the occlusal angle, tooth length adjustment, bone length change range, and material and shape parameters of the orthodontic appliance (such as material strength and size ratio). Then, optimizing the early stage, mid-stage, and late stage of the orthodontic appliance under each stage's three-dimensional digital model. Finally, using a genetic algorithm or simulated annealing method, the design parameters are iteratively optimized to determine that the orthodontic force value of the three-dimensional digital model of the orthodontic appliance for that stage is within a safe and effective range.

[0069] Step S204: Convert the target correction data output from the optimized multi-stage three-dimensional digital model of the orthodontic appliance into manufacturing instructions, and drive the printing equipment to manufacture the corresponding orthodontic appliance mold or print the corresponding orthodontic appliance prototype manufacturing steps according to the manufacturing instructions, and manufacture multiple orthodontic appliances for one orthodontic sequence.

[0070] Specifically, the manufacturing steps include: converting the target correction data output from the optimized multi-stage three-dimensional digital model of the orthodontic appliance into manufacturing instructions, and driving the printing equipment to manufacture the corresponding orthodontic appliance mold or print the corresponding orthodontic appliance prototype according to the manufacturing instructions. These steps include: extracting and analyzing the target correction data output from the multi-stage three-dimensional digital model of the orthodontic appliance to obtain the corresponding manufacturing data, determining the manufacturing material according to the target correction data, and then driving the printing equipment to manufacture the corresponding orthodontic appliance mold or print the corresponding orthodontic appliance prototype according to the manufacturing data and the manufacturing material.

[0071] Third Embodiment In the first embodiment described above, a step-by-step micro-adjustment silicone orthodontic appliance is provided. Correspondingly, the third embodiment of this application provides a silicone bracket orthodontic appliance, manufactured using the aforementioned step-by-step micro-adjustment silicone orthodontic appliance system. Figure 3 As shown, Figure 3 This is a schematic diagram of a step-by-step micro-adjustment silicone orthodontic appliance provided in the third embodiment of this application. The step-by-step micro-adjustment silicone orthodontic appliance includes: Multiple sequentially numbered silicone orthodontic appliances 300 constitute an orthodontic sequence. Each silicone orthodontic appliance 300 is customized according to the three-dimensional morphology of the patient's oral cavity at a specific orthodontic stage, and the morphology of the cavity containing the dentition is different and continuously changing.

[0072] It should be noted that although several structures, components, or units for implementing the relevant functions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the specific embodiments of this application, the features and functions of two or more structures, components, or units described above can be embodied in one structure, component, or unit. Conversely, the features and functions of one structure, component, or unit described above can be further divided and embodied by multiple components, structures, or units.

[0073] Furthermore, although the various components of the components or apparatus in this application and the mounting arrangements between them are described in a specific order in the accompanying drawings, this does not require or imply that the components or apparatus must be designed according to that specific component or mounting arrangement, or that all the components shown must be included to achieve the desired result. Additional or alternative components may be omitted, multiple components may be combined into one component to achieve the corresponding function, and / or a component may be decomposed into multiple components to achieve the corresponding function, etc.

[0074] Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

[0075] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0076] Memory may include non-persistent storage in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0077] 1. Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information by any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include non-transitory computer-readable media, such as modulated data signals and carrier waves.

[0078] 2. Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0079] It should be noted that the embodiments of this application may involve the use of user data. In practical applications, user-specific personal data may be used in the scheme described herein within the scope permitted by applicable laws and regulations, provided that it complies with the applicable laws and regulations of the country (e.g., with the user's explicit consent, with the user being properly notified, etc.).

[0080] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of the relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation entry points are provided for users to choose to authorize or refuse.

Claims

1. A step-by-step micro-adjustment silicone orthodontic appliance system, characterized in that, include: Multiple sequentially numbered silicone orthodontic appliances constitute an orthodontic sequence. Each silicone orthodontic appliance is customized according to the three-dimensional morphology of the patient's oral cavity at a specific orthodontic stage, and the morphology of the cavity containing the teeth is different and continuously changing. A digital design and manufacturing system is used to manufacture the multiple sequentially numbered silicone orthodontic appliances. The digital design and manufacturing system includes: The data acquisition module is used to acquire the initial three-dimensional data of the user's initial jaw and the target three-dimensional data of the target jaw; Multi-stage orthodontic appliance 3D digital model construction module: used to decompose the complete orthodontic process into multiple target tooth pose stage data based on the initial 3D data of the initial dentition and the target 3D data of the target dentition, and to construct multiple continuous stage 3D digital models of the orthodontic appliance based on the target tooth pose stage data. Mechanical simulation and optimization module: used to perform mechanical simulation on the three-dimensional digital model of the orthodontic appliance at each stage, analyze the stress distribution information of the teeth, jawbone and periodontal tissues when the appliance is worn at the corresponding stage, and optimize the tooth target pose stage data of the three-dimensional digital model of the orthodontic appliance at that stage based on the stress distribution information, and determine that the orthodontic force value of the three-dimensional digital model of the orthodontic appliance at that stage is within a safe and effective range. Manufacturing drive module: It is used to convert the target correction data output from the optimized three-dimensional digital models of the multiple stages of the orthodontic appliance into manufacturing instructions, and drive the printing equipment to manufacture the corresponding orthodontic appliance mold or print the corresponding orthodontic appliance prototype manufacturing steps according to the manufacturing instructions, and manufacture multiple silicone orthodontic appliances for one orthodontic sequence.

2. The step-by-step micro-adjustment silicone orthodontic appliance system according to claim 1, characterized in that, The process of orthodontic treatment is decomposed into multiple target tooth pose stages based on the initial three-dimensional data of the initial dentition and the target three-dimensional data of the target dentition. Multiple consecutive three-dimensional digital models of the orthodontic appliance for each stage are then constructed based on these target tooth pose stages, including: Based on the initial three-dimensional data of the initial jaw and the target three-dimensional data of the target jaw, the total tooth movement path from the initial jaw to the target jaw is planned. The total tooth movement path is divided into multiple consecutive tooth pose target stages, and tooth target pose stage data for each tooth pose target stage is obtained. Multiple initial stage orthodontic appliance 3D digital models are constructed, and the corresponding initial stage orthodontic appliance 3D digital models are iteratively trained based on the target tooth pose stage data. The output results of the initial stage orthodontic appliance 3D digital models are compared with preset standard parameters. If the comparison results are consistent, multiple stage orthodontic appliance 3D digital models are obtained.

3. The step-by-step micro-adjustment silicone orthodontic appliance system according to claim 2, characterized in that, The step of planning the total tooth movement path from the initial jaw to the target jaw based on the initial three-dimensional data of the initial jaw and the target three-dimensional data of the target jaw includes: Each tooth is automatically segmented and semantically labeled based on its alignment, occlusion, and the desired state after correction. Analyze the degrees of freedom of motion of each tooth in three-dimensional space to construct the pose transformation of a single tooth from the initial jaw position to the target jaw position; The movement path type of each tooth is determined, and the interpolation strategy corresponding to each tooth is determined according to the movement path type to obtain the movement path corresponding to each tooth. The movement paths of each tooth are coordinated and planned to obtain the total tooth movement path from the initial jaw to the target jaw.

4. The step-by-step micro-adjustment silicone orthodontic appliance system according to claim 3, characterized in that, The step of dividing the total tooth movement path into multiple consecutive tooth pose target stages and obtaining tooth target pose stage data for each of the tooth pose target stages includes: The total tooth movement path is divided into N consecutive stages according to a preset constraint dimension, which includes at least a geometric displacement dimension, an angle change dimension, a biological response dimension, and a clinical cycle dimension; the number of stages N is determined by the tooth with the largest displacement. Obtain three-dimensional data of the target pose that each tooth should achieve at the end of each stage; The three-dimensional data is optimized according to a preset optimization strategy to obtain the target tooth pose stage data.

5. The step-by-step micro-adjustment silicone orthodontic appliance system according to claim 4, characterized in that, The preset optimization strategy includes at least: a strategy for interdental occlusion, a strategy for reasonable adjustment range, and a strategy for maintaining a reasonable connection between displacement targets at each stage.

6. The step-by-step micro-adjustment silicone orthodontic appliance system according to claim 1, characterized in that, The mechanical simulation of the three-dimensional digital model of the orthodontic appliance at each stage is performed to analyze the stress distribution information acting on the teeth, jawbone, and periodontal tissues when the appliance is worn at the corresponding stage, including: The environmental conditions of each stage of the orthodontic appliance under the three-dimensional digital model of each stage are determined when it is worn in each stage, and the effective area of ​​each stage of the orthodontic appliance is simulated using a preset analysis method. Determine the mechanical data of the orthodontic appliance for each stage at that stage; Based on the mechanical data of each stage appliance at that stage, the function of each stage appliance relative to each tooth is analyzed, and the stress transmission data to each tooth and periodontal tissue is calculated.

7. The step-by-step micro-adjustment silicone orthodontic appliance system according to claim 1, characterized in that, The step of feeding back and optimizing the tooth target pose stage data of the three-dimensional digital model of the orthodontic appliance based on the stress distribution information, and determining that the orthodontic force value of the three-dimensional digital model of the orthodontic appliance in this stage is within a safe and effective range, includes: Based on the simulation results, the design parameters of the three-dimensional digital model of the stage orthodontic appliance are adjusted; the design parameters include at least the occlusal angle, tooth length adjustment amount, bone length change range, and the material and shape parameters of the orthodontic appliance. Optimization of each stage of the orthodontic appliance under the three-dimensional digital model of each stage; Using a genetic algorithm or simulated annealing method, the design parameters are iteratively optimized to determine that the corrective force value of the three-dimensional digital model of the orthodontic appliance for this stage is within a safe and effective range.

8. The step-by-step micro-adjustment silicone orthodontic appliance system according to claim 1, characterized in that, The acquisition of the user's initial three-dimensional data of the initial jaw and the target three-dimensional data of the target jaw includes: Scan and collect dental images corresponding to the user's maxillary dentition, mandibular dentition, and occlusion records; Dental software is used to convert the coordinates of points in the dental images into coordinates in three-dimensional space, and to generate initial three-dimensional data. Using a dental data platform, and simulating the tooth alignment operation for each tooth based on the input initial 3D data, candidate 3D data are obtained; The candidate 3D data are verified according to preset occlusion verification parameters to select target 3D data of the target position tooth jaw from the candidate 3D data; the preset occlusion verification parameters include at least dynamic occlusion simulation verification, adjacent relationship verification, and root safety verification.

9. A method for manufacturing a step-by-step micro-adjustment silicone orthodontic appliance, characterized in that, include: Acquire the initial 3D data of the user's initial jaw and the target 3D data of the target jaw; Based on the initial three-dimensional data of the initial jaw and the target three-dimensional data of the target jaw, the complete process of orthodontic treatment is decomposed into multiple target tooth pose stage data, and multiple continuous stage three-dimensional digital models of the orthodontic appliance with target tooth pose are constructed based on the target tooth pose stage data. Mechanical simulation is performed on the three-dimensional digital model of the orthodontic appliance for each stage. The stress distribution information acting on the teeth, jawbone and periodontal tissues when the appliance is worn at the corresponding stage is analyzed. Based on the stress distribution information, the target tooth pose stage data of the three-dimensional digital model of the orthodontic appliance for that stage is fed back and optimized, and the orthodontic force value of the three-dimensional digital model of the orthodontic appliance for that stage is determined to be within a safe and effective range. The target correction data output from the optimized multi-stage three-dimensional digital model of the orthodontic appliance is converted into manufacturing instructions. Based on the manufacturing instructions, the printing equipment is driven to manufacture the corresponding orthodontic appliance mold or print the corresponding orthodontic appliance prototype manufacturing steps, and multiple orthodontic appliances for one orthodontic sequence are manufactured.

10. A step-by-step micro-adjustment silicone orthodontic appliance, characterized in that, The step-by-step micro-adjustment silicone orthodontic appliance is manufactured using any one of the step-by-step micro-adjustment silicone orthodontic appliance systems described in any one of 1-9 above, comprising: Multiple sequentially numbered silicone orthodontic appliances constitute an orthodontic sequence. Each silicone orthodontic appliance is customized according to the three-dimensional morphology of the patient's oral cavity at a specific orthodontic stage, and the morphology of the dentition cavity is different and continuously changing.

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