An orthodontic active appliance digital production method

Abstract

The application discloses a kind of orthodontic active appliance digital production method, comprising the following steps: scanning patient mouth condition, obtains patient oral cavity three-dimensional data;According to the three-dimensional data of patient oral cavity, the orthodontic active appliance model of STL file format is constructed, the orthodontic active appliance model includes steel wire component model and resin base model, the resin base model is divided into two pieces in its thickness direction, and two resin base models are combined after embedding the connecting body part of each steel wire component model together;According to the STL file of steel wire component model and resin base model, the automatic bending of each steel wire component and the printing of two resin bases are completed;Select a piece of resin base, insert the connecting body part of each steel wire component into the corresponding groove, apply adhesive on the surface combined with another piece of resin base, then bond two pieces of resin base, and the production of orthodontic active appliance is completed after bonding firmly.

Description

Technical Field

[0001] This invention relates to the field of orthodontic appliance technology, and specifically to a digital manufacturing method for orthodontic removable appliances. Background Technology

[0002] Orthodontic removable appliances are devices used to treat oral malocclusion. They can directly generate force or utilize the functional forces of the masticatory muscles and perioral muscles to change the deformed jawbone, misaligned teeth, and periodontal supporting tissues, thereby promoting normal growth and development of the dentofacial region and achieving a corrective effect. They mainly consist of a wire component and a resin base; the wire component is divided into a retention section, a force-applying section, and a connector section. The connector is the part embedded in the resin base. Orthodontic removable appliances are generally designed by a dentist and then fabricated by an orthodontic technician in a manufacturing plant based on a plaster model of the patient.

[0003] The traditional steps for fabricating removable orthodontic appliances are as follows: 1. First, an impression is taken from the patient's mouth using a tray and alginate material. Then, plaster is poured into the impression to obtain a plaster model that reflects the patient's teeth, dentition, and oral mucosa. 2. For some functional appliances, it is necessary to move the mandible forward or backward to the required correct position within the patient's mouth. The appliance is then fabricated according to this position so that the appliance can guide the mandible to the correct position after the patient wears it. Therefore, a wax occlusion record is taken at this position to determine the positional relationship between the upper and lower jaws. 3. The plaster model is then trimmed, including removing burrs and plaster nodules. Simultaneously, undercuts used for retention are trimmed according to the design to expose the undercuts or enhance retention. 4. For some functional appliances, the upper and lower jaw models are then combined with the maxillary articulation system according to the wax occlusion record to transfer the intraoral jaw relationship to the articulation system. Figure 1 , Figure 2 ), and proceed with subsequent fabrication based on this location. 5. Bend the required wire components using stainless steel wire of different specifications according to the design. Figure 3 , Figure 4 The retaining part should extend into the recess, and the connecting part should be approximately 1mm away from the plaster model. Figure 5 This ensures the resin base completely encloses the steel wire components. Simultaneously, the connecting parts must form a bend within the resin base to prevent rotation or displacement of the wire components during use, and each connecting part must be appropriately extended to ensure overlap. Figure 4 This enhances the strength of the resin base. 6. Apply a release agent to the plaster model within the area requiring resin coating to ensure the resin can be removed from the plaster model after coating and polymerization. 7. Secure the wire components to the plaster model with wax according to the design. Figure 6 , Figure 7To prevent the wire components from shifting during the filling process and affecting the effectiveness of the orthodontic appliance, ensure that the wax is applied outside the filling area. 8. After the separating agent dries, mix the self-curing resin. The resin base of the orthodontic removable appliance is mainly made of self-curing resin. Self-curing resin is obtained by polymerizing a mixture of powder (dental tray powder) and liquid (dental tray liquid) in a 5:3 volume ratio. The polymerization process goes through six stages: wet sand stage, thin paste stage, wire bonding stage, dough stage, rubber stage, and hardening stage. Generally, the resin is coated in the late thin paste stage or early wire bonding stage. At this time, the self-curing resin has moderate fluidity, making it easy to shape and flow between the plaster model and the connector to achieve complete embedding of the connector. Figure 8 According to the designed base area, self-curing resin is applied to the plaster model using a sculptor's tool. Figure 9 The coating should be approximately 2mm thick (the thickness varies depending on the type of appliance), completely covering the connecting parts. 9. After coating, place the appliance, along with the plaster model, into a pressure cooker for pressurization to reduce air bubbles in the resin. 10. Once the resin has fully polymerized, remove the appliance from the plaster model. Polish the resin parts to complete the appliance fabrication. Figure 10 , Figure 11 ).

[0004] Traditional methods for fabricating removable orthodontic appliances have the following drawbacks: 1. The traditional methods are cumbersome and time-consuming. 2. They require highly skilled technicians and are not easy to master. 3. Plaster models are prone to developing plaster lumps during the pouring process, affecting the accuracy of the model in reflecting the oral cavity, and plaster models are difficult to transport and store. 4. Bending of wire components often cannot be done in one step, requiring multiple bending steps to achieve the desired effect, which can cause fatigue at the bends in the stainless steel wire, making it prone to breakage. 5. When bending with orthodontic pliers, the clamping force cannot be precisely controlled, resulting in plier marks at the clamping points, causing stress concentration and making it prone to breakage. 6. Repairing broken wire components is a cumbersome process. 7. Dental tray liquid contains certain toxic components, posing a potential health hazard to the technician.

[0005] In recent years, with the development of the internet, more and more traditional industries have embraced digitalization. As 3D printing technology matures, the orthodontic industry is also gradually moving towards digitalization. Orthodontic appliances with relatively simple components, such as those made entirely of resin or metal, can be manufactured digitally. However, most removable orthodontic appliances include both resin and metal components, with some metal embedded within the resin. Current 3D printing technology cannot directly print these components, which hinders the process of making removable orthodontic appliances fully digital.

[0006] Some scholars abroad have proposed a method to solve this problem: stop printing when the resin base is halfway through printing and the portion accommodating the connectors is exposed, then place the wire component in the correct position and restart the printer to complete the printing. However, this method requires that the space accommodating each connector be parallel to the printing plane, the connector portion used to prevent rotation and displacement must be perpendicular to the printing plane, and the connectors cannot be extended. Figure 12 This method ensures that the wire components can be smoothly inserted into the space to accommodate them after printing is paused. Therefore, the connectors of the orthodontic appliances printed using this method do not overlap, which affects their strength; furthermore, it cannot print orthodontic appliances with multiple resin bases (because pre-printed resin bases would interfere with printer operation), and this method also places high demands on the printer. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of traditional orthodontic removable appliance manufacturing methods by providing a digital manufacturing method for orthodontic removable appliances. This method enables the complete digitization of the orthodontic removable appliance manufacturing process, improves the working environment for orthodontic technicians, eliminates the reliance on plaster models in traditional manufacturing methods, further improves the accuracy of appliance manufacturing, and simplifies the manufacturing process while increasing production efficiency.

[0008] This invention is achieved through the following technical solution:

[0009] This invention provides a method for digitally manufacturing orthodontic removable appliances, comprising the following steps:

[0010] Step 1: Scan the patient's oral cavity to obtain three-dimensional data of the patient's oral cavity;

[0011] Step 2: Construct an orthodontic removable appliance model in STL file format based on the patient's three-dimensional oral data. The orthodontic removable appliance model includes a wire component model and a resin base model. The resin base model is divided into two equal parts in its thickness direction, and the two resin base models are combined to jointly embed the connecting parts of each wire component model.

[0012] Step 3: Import the STL file of the wire component model into the wire bending equipment to complete the automatic bending of each wire component. Import the STL file of the resin base model into the 3D printer to complete the printing of two resin bases.

[0013] Step 4: Select a resin base and insert the connecting parts of each wire component into the corresponding groove. Apply adhesive to the surface that will be joined with another resin base, and then bond the two resin bases together. Once the bonding is firm, the orthodontic removable appliance is complete.

[0014] In some embodiments, when constructing an orthodontic removable appliance model in STL file format based on the patient's three-dimensional oral data in step 2, the following steps are included:

[0015] Step 21: Import the patient's oral cavity 3D data into the software;

[0016] Step 22: Select the type of orthodontic removable appliance to be made;

[0017] Step 23: Use the trimming tools in the software to trim the undercuts or other areas in the 3D oral cavity data model.

[0018] Step 24: Design the models of each wire component based on the revised three-dimensional oral cavity data model;

[0019] Step 25: Design the resin base model based on the modified three-dimensional oral cavity data model and the models of each wire component;

[0020] Step 26: Create a dividing surface on the resin base model. The dividing surface passes through all the connectors of the wire component model and bisects each connector in the radial direction. It exists inside the resin base model and divides the resin base model into two parts in the thickness direction through the dividing surface.

[0021] Step 27: Save each wire component model and the segmented resin base model as an STL file.

[0022] In some embodiments, step 1 involves using an intraoral 3D scanner to scan the patient's teeth, dental arch, mucosa, and other intraoral conditions to obtain three-dimensional data of the patient's oral cavity.

[0023] In some embodiments, when fabricating a partial functional orthodontic appliance, the patient's upper and lower jaws are scanned separately. The patient's lower jaw is also protruded or retracted to the desired position, and the patient's upper and lower jaws are scanned simultaneously at this position to record the relative positional relationship between the upper and lower jaws.

[0024] In some embodiments, when making a partial functional orthodontic appliance in step 21, the maxillary and mandibular oral scan data and the scan data recording their relative positional relationship are imported together. The software recognizes the three sets of images and registers the maxillary and mandibular models to the correct jaw position relationship through the recorded relative positional relationship. The appliance is then made according to this jaw position relationship.

[0025] In some embodiments, step 24 involves pre-setting commonly used wire component models in the software, clicking on the desired type and specification of wire component and selecting the tooth position, so that the software automatically identifies and places the wire component model in the correct position.

[0026] In some embodiments, fine adjustments to the wire component model are allowed by adding manipulable points to a preset wire component model.

[0027] In some embodiments, step 25 involves automatically filling the resin base model with software based on the modified three-dimensional oral cavity data model and the completed wire component models, combined with the previously selected type of orthodontic appliance.

[0028] In some embodiments, manipulable points are added to the edges of the resin base model to allow for manual adjustment of the shape and extent of the resin base model.

[0029] In some embodiments, the adhesive in step 4 is a biosafe and colorless transparent material that has good bonding performance under normal oral cavity and intraoral temperature conditions, and has a maximum heat resistance temperature of less than 100°C.

[0030] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0031] 1. This invention eliminates the reliance on plaster models in traditional methods by using oral scanning technology, resulting in more accurate three-dimensional oral data models that are more conducive to the fabrication of orthodontic appliances. Furthermore, the oral scanning data can be sent directly to the processing plant online, greatly reducing the transportation time and cost of traditional plaster models and making them easier to store. By modifying the oral model in software, the modification efficiency is improved, and the error tolerance of technicians during modification is increased.

[0032] 2. This invention eliminates the need for waxing to fix the wire components by designing and placing the model in the software; simultaneously, by precisely designing the resin base model in the software, the printed resin base only requires removing the support material and performing simple polishing, saving a significant amount of polishing time; by segmenting the resin base model, it achieves the effect of manufacturing the resin base using 3D printing technology, avoiding excessive contact with dental tray liquid by orthodontic technicians and eliminating the need for applying a release agent by directly 3D printing the resin base;

[0033] 3. By using an adhesive with a maximum heat resistance temperature below 100℃, the two resin base pieces can be easily separated when the orthodontic appliance is immersed in hot water with a heat resistance temperature higher than that of the adhesive. If the wire component breaks during use, it can be immersed in hot water to separate the base piece and remove the broken wire component. The saved STL file of the wire component can be imported into the wire bending equipment to bend a new wire component and reassemble and bond it to achieve a rapid repair effect.

[0034] 4. The resin base and wire components are manufactured separately and then assembled. This method can be used to make orthodontic appliances with multiple resin bases (such as removable lip guards and Frankel appliances). The traditional method involves embedding the wire components with self-curing resin and then polishing it after the resin has solidified. However, in some orthodontic appliances, the wire components and the resin base form a relatively narrow area, which the polishing bur or polishing wheel cannot reach, affecting the polishing effect. This technical solution polishes the surface of the resin base first and then assembles it with the wire components, thus avoiding the above situation. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0036] Figures 1-12 A schematic diagram of a traditional method for manufacturing orthodontic removable appliances;

[0037] Figure 13 This is a flowchart illustrating the overall process of digital manufacturing method for orthodontic removable appliances in this invention.

[0038] Figure 14 A schematic diagram of the Frankel appliance;

[0039] Figure 15 A schematic diagram of the Frankel appliance mounted on the model;

[0040] Figure 16 A schematic diagram showing the wire component of the Frankel appliance protruding from the center of its resin base;

[0041] Figure 17 This is a schematic diagram of the lower resin base model after it has been divided into two parts;

[0042] Figure 18 This is a schematic diagram of the lower resin base model after it has been divided into three parts. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0045] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0046] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0047] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists, A and B exist simultaneously, and B exists. In addition, the character " / " in this document generally indicates that the related objects before and after it have an "or" relationship.

[0048] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0049] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces), unless otherwise explicitly specified.

[0050] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0051] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0052] Example

[0053] Please refer to Figure 13 The overall flowchart of the digital fabrication method for removable orthodontic appliances in this application embodiment includes the following steps:

[0054] Step 1: Scan the patient's oral cavity to obtain three-dimensional data of the patient's oral cavity;

[0055] Step 2: Construct an orthodontic removable appliance model in STL file format based on the patient's three-dimensional oral data. The orthodontic removable appliance model includes a wire component model and a resin base model. The resin base model is divided into two equal parts in its thickness direction, and the two resin base models are combined to jointly embed the connecting parts of each wire component model.

[0056] Step 3: Import the STL file of the wire component model into the wire bending equipment to complete the automatic bending of each wire component. Import the STL file of the resin base model into the 3D printer to complete the printing of two resin bases.

[0057] Step 4: Select a resin base and insert the connecting parts of each wire component into the corresponding groove. Apply adhesive to the surface that will be joined with another resin base, and then bond the two resin bases together. Once the bonding is firm, the orthodontic removable appliance is complete.

[0058] According to some embodiments of this application, in step 2, when constructing an orthodontic removable appliance model in STL file format based on the patient's three-dimensional oral data, the following steps are included:

[0059] Step 21: Import the patient's oral cavity 3D data into the software;

[0060] Step 22: Select the type of orthodontic removable appliance to be made;

[0061] Step 23: Use the trimming tools in the software to trim the undercuts or other areas in the 3D oral cavity data model.

[0062] Step 24: Design the models of each wire component based on the revised three-dimensional oral cavity data model;

[0063] Step 25: Design the resin base model based on the modified three-dimensional oral cavity data model and the models of each wire component;

[0064] Step 26: Create a dividing surface on the resin base model. The dividing surface passes through all the connectors of the wire component model and bisects each connector in the radial direction. It exists inside the resin base model and divides the resin base model into two parts in the thickness direction through the dividing surface.

[0065] Step 27: Save each wire component model and the segmented resin base model as an STL file.

[0066] According to some embodiments of this application, step 1 involves using an intraoral 3D scanner to scan the patient's teeth, dental arch, mucosa, and other intraoral conditions to obtain three-dimensional data of the patient's oral cavity. When fabricating a partial functional orthodontic appliance, the patient's upper and lower jaws are scanned separately. The patient's lower jaw is also protruded or retracted to the desired position, and the upper and lower jaws are scanned simultaneously at this position to record their relative positional relationship.

[0067] According to some embodiments of this application, in step 21, the patient's three-dimensional oral data is imported into the software. When making a partial functional orthodontic appliance, the maxillary and mandibular oral scan data and the scan data recording their relative positional relationship are imported together. The software recognizes the three sets of images and registers the maxillary and mandibular models to the correct jaw position relationship through the recorded relative positional relationship. The appliance is then made according to this jaw position relationship.

[0068] According to some embodiments of this application, when modifying the oral cavity three-dimensional data model in step 23, the modification principle is consistent with that of the plaster model in the traditional method, such as removing the model flash, etc. At the same time, the undercut used for retention is modified according to the design to expose the undercut or enhance retention.

[0069] According to some embodiments of this application, step 24 involves pre-setting commonly used wire component models (such as arrow clasps, single-arm clasps, interproximal hooks, double-curved lip bows, etc.) in the software, clicking on the desired wire component type and specification, and selecting the tooth position. The software automatically identifies and places the wire component model in the correct position. Simultaneously, manipulable points can be added to the wire component model, allowing for fine adjustments. The design principles of the wire component models are the same as traditional methods. The design of each wire component model is completed in the same manner.

[0070] According to some embodiments of this application, step 25 automatically fills the resin base model using software, based on the revised three-dimensional oral cavity data model and the completed wire component models, combined with the previously selected type of orthodontic appliance. Simultaneously, manipulable points can be added to the edges of the resin base model, allowing manual adjustment of its shape and extent. The desired thickness of the resin base model can be directly input, or local adjustments can be made using add and cut tools. The portion of the resin base model overlapping with the wire component model is automatically cut off.

[0071] According to some embodiments of this application, when creating the resin base model segmentation surface in step 26, a surface is created that passes through all connectors, bisects each connector, and exists within the resin base model. This segmentation surface can be automatically generated in the software based on the designed resin base model through calculation and fitting. Simultaneously, manipulable points can be added to the created segmentation surface, allowing manual adjustment of its position. After the segmentation surface is determined, the software automatically divides the resin base model into two parts along the segmentation surface. Because the segmentation surface is created by passing through and equally bisecting the connector portions, each part of the resin base model now has half of a groove to accommodate the steel wire component model connector.

[0072] It should be noted that when wire components protrude from the center of the resin base model rather than the edge, such as tongue spikes, tongue grilles, and... Figure 14 , Figure 15 The Frankel appliance is an example. Because the Frankel appliance has a wire component that extends from the center of its resin base, such as... Figure 16 As shown. The dividing surface needs to simultaneously divide the resin base model along its thickness direction and the vertical direction. The lower resin base model after being divided into two parts is as follows. Figure 17 As shown. To facilitate the installation of the upper resin base, the upper resin base model can be divided into two parts (i.e., the entire resin base model is divided into three parts). The lower resin base model after being divided into three parts is shown below. Figure 18 As shown.

[0073] According to some embodiments of this application, the adhesive in step 4 is a highly biocompatible, strong, colorless, and transparent material that exhibits good adhesion under normal intraoral and extraoral temperature conditions, and has a maximum heat resistance temperature below 100°C. By using an adhesive with a maximum heat resistance temperature below 100°C, the two resin base pieces can be easily separated when the orthodontic appliance is immersed in hot water above the adhesive's maximum heat resistance temperature, thus facilitating appliance repair. Furthermore, temperatures below 100°C do not affect the resin base.

[0074] According to some embodiments of this application, in step 3, the STL files of each wire component are imported into software compatible with the automatic bending orthodontic wire equipment to complete the automatic bending of each wire component. The STL files of the segmented resin base are imported into software used with a 3D resin printer to complete the printing of the resin base. The printing support material is removed, and the polished surface of the resin base is simply sanded and polished.

[0075] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for digitally manufacturing a removable orthodontic appliance, characterized in that, Includes the following steps: Step 1: Scan the patient's oral cavity to obtain three-dimensional data of the patient's oral cavity; Step 2: Construct an orthodontic removable appliance model in STL file format based on the patient's three-dimensional oral data. The orthodontic removable appliance model includes a wire component model and a resin base model. The resin base model is divided into two equal parts in its thickness direction, and the two resin base models are combined to jointly embed the connecting parts of each wire component model. Step 3: Import the STL file of the wire component model into the wire bending equipment to complete the automatic bending of each wire component. Import the STL file of the resin base model into the 3D printer to complete the printing of two resin bases. Step 4: Select a resin base and insert the connecting parts of each wire component into the corresponding groove. Apply adhesive to the surface that will be joined with another resin base, and then bond the two resin bases together. Once the bonding is firm, the orthodontic removable appliance is complete. Step 2, which involves constructing an orthodontic removable appliance model in STL file format based on the patient's three-dimensional oral cavity data, specifically includes the following steps: Step 21: Import the patient's oral cavity 3D data into the software; Step 22: Select the type of orthodontic removable appliance to be made; Step 23: Use the trimming tools in the software to make undercuts or trim areas that need trimming in the 3D oral cavity data model; Step 24: Design the models of each wire component based on the modified three-dimensional oral cavity data model; Step 25: Design the resin base model based on the modified three-dimensional oral cavity data model and the models of each wire component; Step 26: Create a dividing surface on the resin base model. The dividing surface passes through all the connectors of the wire component model and bisects each connector in the radial direction. It exists inside the resin base model and divides the resin base model into two parts in the thickness direction through the dividing surface. Step 27: Save each wire component model and the segmented resin base model as an STL file.

2. The method for digitally manufacturing orthodontic removable appliances according to claim 1, characterized in that, In step 1, an intraoral 3D scanner is used to scan the patient's teeth, dental arch, mucosa, and other intraoral conditions to obtain three-dimensional data of the patient's oral cavity.

3. The method for digitally manufacturing orthodontic removable appliances according to claim 2, characterized in that, When making a partial functional appliance, the patient's upper and lower jaws are scanned separately. The patient's lower jaw is also moved forward or backward to the required position. At this position, the patient's upper and lower jaws are scanned at the same time to record the relative positional relationship between the upper and lower jaws.

4. The method for digitally manufacturing orthodontic removable appliances according to claim 3, characterized in that, When making a partial functional orthodontic appliance, in step 21, the oral scan data of the upper and lower jaws and the scan data recording their relative positional relationship need to be imported together. The software recognizes the three sets of images and registers the upper and lower jaw models to the correct jaw position relationship through the recorded relative positional relationship. The subsequent manufacturing is carried out according to this jaw position relationship.

5. The digital manufacturing method for orthodontic removable appliances according to claim 1, characterized in that, Step 24 involves pre-setting commonly used wire component models in the software, clicking on the required wire component type and specifications, and selecting the tooth position. The software then automatically identifies and places the wire component model in the correct position.

6. The method for digitally manufacturing orthodontic removable appliances according to claim 5, characterized in that, By adding manipulable points to the preset wire component model, fine adjustments to the wire component model can be made.

7. The method for digitally manufacturing orthodontic removable appliances according to claim 1, characterized in that, Step 25 involves automatically filling the resin base model with the modified three-dimensional oral cavity data model and the completed wire component models using software, combined with the previously selected type of orthodontic appliance.

8. The method for digitally manufacturing orthodontic removable appliances according to claim 7, characterized in that, By adding manipulable points to the edges of the resin base model, the shape and extent of the resin base model can be manually adjusted.

9. The method for digitally manufacturing orthodontic removable appliances according to claim 1, characterized in that, The adhesive used in step 4 is a biosafe and colorless transparent material that has good bonding performance under normal oral cavity temperature conditions and a maximum heat resistance temperature of less than 100°C.

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