Batch positioning and welding method for orthodontic personalized corrector bottom plates

Abstract

The invention discloses a batch positioning and welding method for orthodontic personalized orthodontic appliance bottom plates, which is high in preparation efficiency for personalized multi-tooth or full-tooth orthodontic appliances, and is more accurate and stable: (1) personalized bottom plates are arranged on a base plate, and a 3D printing technology is utilized, so that the personalized multi-tooth or full-tooth orthodontic appliance bottom plates are obtained; according to the method, the personalized base plate corresponding to multiple teeth or full teeth can be printed and prepared at a time, and compared with the prior art that the personalized base plate is printed singly, the efficiency is obviously improved; and (2) through the positioning limiting pieces on the base plate and the positioning plate, one-time accurate positioning can be performed on the welding holes and the corresponding personalized bottom plates, and then positioning welding is performed through the welding holes, so that the efficiency is high, the error accumulation caused by inserting or bonding or welding through single positioning can be reduced, and the error is smaller, more accurate and more stable. And (3) the orthodontic appliance main body and the positioning plate can be produced in batches in a standardized manner, so that the preparation efficiency of the personalized orthodontic appliance can be further improved, and the cost is lower.

Description

Technical Field

[0001] The present invention relates to the technical field of dental orthodontic appliance preparation, and in particular to a method for mass positioning welding of base plates of orthodontic personalized orthodontic appliances. Background Art

[0002] Orthodontic braces are usually divided into two parts: the base plate and the body of the brace, where the body of the brace usually includes grooves, bracket wings, archwire fixing and locking devices, etc. When preparing the brace, the standardized base plate and the body of the brace are aligned and welded in a welding device to obtain the final brace product. The brace prepared by this method is a standardized product and it is difficult to achieve personalized treatment goals.

[0003] In the process of orthodontic treatment, in order to accurately match the patient's tooth morphology, accurately control tooth movement, and achieve the patient's personalized treatment goals, it is necessary to make personalized orthodontic appliances that are suitable for the patient's tooth morphology and the final treatment goals. Especially in lingual orthodontic treatment, the individual differences in the lingual morphology of patients are large. After setting the target tooth position according to the treatment goal, it is necessary to accurately locate the three-dimensional position of the appliance body, the personalized base plate and the tooth surface and make a personalized appliance.

[0004] At present, there are three main methods for preparing personalized orthodontics:

[0005] ① Integrally cast personalized braces: This type of braces uses software to design the three-dimensional data of the braces, and after making the corresponding personalized brace wax model, the braces are formed through integral casting and post-processing processes.

[0006] ②3D metal printed personalized correctors: This type of corrector is directly printed as a whole using a 3D metal printer, and then polished to form the corrector.

[0007] The processing accuracy of the corrector body prepared by the above two methods is low, and the fine structures such as the corrector grooves are difficult to polish. The production efficiency is low, and it is difficult to achieve mass production of personalized self-locking correctors with complex structures.

[0008] ③ Preparation of personalized correctors by local splicing and positioning of a single corrector: This method first prepares the corrector body with a positioning groove or a positioning block, and a personalized base plate with a corresponding positioning structure, and then completes the production of a single corrector by local splicing of the single corrector body and the personalized base plate. However, this method designs the positioning structure of the single corrector body and the base plate, which is less than 2mm in shape, too small, and has large local errors in 3D printing, making it difficult to accurately and stably position and weld, and is only suitable for positioning and welding of a single corrector, with low production efficiency.

[0009] Specific prior arts corresponding to the above method include, for example, the invention patent with application publication number CN 112472331 A, "A method for manufacturing a personalized lingual orthodontic appliance", the invention patent with authorization announcement number CN 106955167 B, "A method for preparing a plug-in personalized lingual orthodontic appliance and the appliance prepared by the method", and the invention patent with authorization announcement number CN 105030349 B, "A method for manufacturing a personalized lingual straight wire self-ligating orthodontic appliance". The manufacturing steps include casting a metal corrector base plate-connector, a metal corrector body and a lingual tube; welding and assembling the corrector body, the corrector base plate-connector, and the self-locking spring piece by a clamp, and there is a welding positioning block on each side of the base plate connector. During welding, the corrector body and the base plate are fixed together by a clamp for laser welding. Another example is the invention patent with application publication number CN114762629 A, "A method for opening a mold for a personalized lingual corrector base plate and a method for producing personalized lingual correctors using a mold obtained by the mold opening method". The invention provides a method for opening a mold for a personalized lingual corrector base plate, which determines the size of the mold substrate according to the size range of the personalized lingual corrector base plates of different tooth positions, and assembles and adjusts the tooth model in the mold substrate, and obtains the final personalized lingual corrector base plate mold through Boolean operations: a concave model cavity. However, in the process of implementing the solution, the mold is opened to prepare the mold to produce the personalized corrector base plate. Because different patients have large differences in the position of the corrector body and the personalized base plate shape, different patients need to prepare different personalized base plate molds, which increases the overall manufacturing process and difficulty, making it difficult to achieve mass production.

[0010] In summary, the existing technologies use integrally cast personalized correctors and 3D metal printed personalized correctors, but both have the problem of difficulty in realizing mass production of personalized self-locking correctors with complex structures, resulting in low production efficiency; or when a single corrector is partially assembled and positioned to prepare a personalized corrector, the corrector and the base plate are small (2-4mm), the 3D metal printed positioning structure is too small, the local error is large, and it is difficult to accurately and stably position and weld, and it is only suitable for positioning and welding of personalized correctors for a single tooth, resulting in low production efficiency. Summary of the invention

[0011] Therefore, based on the above background, the present invention provides a method for batch positioning and welding of orthodontic personalized corrector base plates, which can print personalized base plates for multiple teeth or the entire mouth of teeth as a whole, and position the personalized base plates with the corresponding corrector body at the same time before welding, which is not only efficient, but also more precise and stable.

[0012] The technical solution provided by the present invention is:

[0013] S1: Obtain the patient's three-dimensional digital information of the jaws, use the design software to build an initial jaw model based on the jaw information, and continue to use the design software to perform virtual tooth arrangement based on the initial jaw model to obtain a patient-specific target jaw model that meets the treatment goals;

[0014] S2: Using the design software, according to the initial jaw model and the target jaw model, the main body of the orthodontic appliance is three-dimensionally positioned on the initial jaw model, and a personalized base plate corresponding to each tooth is designed in combination with the tooth surface morphology and occlusal state;

[0015] The personalized base plate has a first welding surface for corresponding welding with the corresponding corrector body; the corrector body has a second welding surface corresponding to the first welding surface;

[0016] S3: In the design software, a three-dimensional model of the base is designed and constructed, and the personalized base plate designed in step S2 is coordinate-converted in combination with the arrangement of the limiting structure of the orthodontic appliance body corresponding to the teeth on the locator, and is arranged on the three-dimensional model of the base;

[0017] S4: After aligning the second welding surface of the corrector body with the first welding surface of the corresponding personalized base plate using the design software, the coordinates of the welding edge shape are obtained, and the automated laser welding path is calculated and generated;

[0018] S5: After the base with the personalized base plate is made, it is polished;

[0019] The manufacturing operation of the base arranged with the personalized bottom plate can be directly printed and manufactured in one piece using 3D printing technology;

[0020] Or first use CNC technology to make the base, and then use the SLM printer to three-dimensionally position and graft the personalized base plate on the base;

[0021] S6: placing the base with the personalized base plate arranged after the grinding and polishing treatment in step S5 on the workbench of the laser welding machine, embedding or clamping the main body of the orthodontic appliance corresponding to the teeth on the locator through the corresponding limiting structure, and then positioning and connecting the locator with the base through the positioning limiting structure;

[0022] Alternatively, a CNC robot arm is used to perform CNC positioning according to the arrangement of the personalized base plate on the base and the relative position relationship between the corrector body embedded or clamped by the limiting structure on the positioner, so as to position and fit the first welding surface of the personalized base plate with the corresponding second welding surface of the corrector body;

[0023] S7: using a laser welding machine, according to the automated laser welding path obtained in step S4, first partially weld the first welding surface of the partially exposed personalized base plate with the welding edge of the second welding surface of the positioned and fitted corrector body, preliminarily weld and fix the corrector body and the personalized base plate, then manually or by a CNC robot arm remove the positioner so that the welding edge is fully exposed, and then complete the complete welding of the welding edge of the corrector body and the personalized base plate according to the automated laser welding path obtained in step S4;

[0024] S8: After the personalized base plate after welding the corrector body is cut off from the base plate and polished, a personalized corrector for clinical use can be obtained.

[0025] Preferably, the personalized base plate arranged on the base in step S3 may correspond to one or more sets of orthodontic body corresponding to all teeth of one patient, or one or more sets of orthodontic body corresponding to all teeth of multiple patients, or one or more sets of orthodontic body corresponding to multiple teeth of one patient or multiple patients.

[0026] Preferably, the design software in steps S1 to S4 is one of 3shape, Maestro-ortho, Bluesky-ortho and Meshlab.

[0027] Preferably, the 3D printing technology in step S5 is one of metal 3D printing, 3D printing wax pattern technology, or resin light-curing 3D printing technology.

[0028] Preferably, the base and the positioner are respectively flat plates.

[0029] Preferably, the positioning and limiting member includes a positioning post and a positioning slot corresponding to the positioning post.

[0030] Preferably, the positioning post is located on the base plate, and the positioning slot is located on the positioning plate.

[0031] Preferably, the main body of the orthodontic appliance is mass-produced in a standardized manner according to the corresponding positions of the teeth using metal powder injection molding technology or computer digital controlled precision machining technology.

[0032] Preferably, the positioner is produced in standardized batches by metal powder injection molding technology or computer digital controlled precision machining technology or three-dimensional printing technology;

[0033] Preferably, in step 3, only the three-dimensional model of the base 1 can be designed and constructed in the design software, and the personalized base plate 4 designed in step S2 is coordinate-converted and arranged on the three-dimensional model of the base 1;

[0034] Then in step S6, the base with the personalized bottom plate arranged thereon produced in step S5 is placed on the workbench of the laser welding machine, and the CNC mechanical arm holding the corrector body is controlled according to the three-dimensional coordinate positioning, and the first welding surface of the corrector body is positioned and bonded with the second welding surface of the corresponding personalized bottom plate one by one;

[0035] Then, in step S7, the automated laser welding path obtained in step S4 is directly used to complete the complete welding of the corrector body and the welding edge of the personalized base plate one by one.

[0036] The above technical solution has the following beneficial effects:

[0037] The present invention has high efficiency in preparing personalized multi-teeth or full-mouth orthodontic appliances, and is more accurate and stable:

[0038] ① It arranges the personalized base plates on the substrate and uses 3D printing technology to print and prepare personalized base plates corresponding to multiple teeth or the entire mouth of teeth at one time. Compared with the prior art of printing a personalized base plate individually, its efficiency is significantly improved;

[0039] ② Through the positioning and limiting parts on the base plate and the positioning plate, the welding holes and the corresponding personalized base plate can be accurately positioned at one time, and then positioning welding can be performed through the welding holes. This is not only efficient, but also can reduce the error accumulation of individual positioning, plug-in, bonding or welding, making the error smaller and more accurate and stable.

[0040] ③ Standardized mass production of the brace body and positioning plates can further improve the preparation efficiency of personalized dental braces, and the cost will be lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 : is a schematic diagram of the structure of the substrate of the present invention Figure 1 .

[0043] Figure 2 : is a schematic diagram of the structure of the substrate of the present invention Figure 2 .

[0044] Figure 3 : is a schematic diagram of the structure of the positioning plate of the present invention Figure 1 .

[0045] Figure 4: is a schematic diagram of the structure of the positioning plate of the present invention Figure 2 .

[0046] Figure 5 : is a schematic structural diagram of the orthodontic appliance body corresponding to one of the teeth of the present invention.

[0047] Figure 6 :For reference to the usage status of the corrector body of the present invention after welding with the corresponding personalized base plate Figure 1 .

[0048] Figure 7 :For reference to the usage status of the corrector body of the present invention after welding with the corresponding personalized base plate Figure 2 .

[0049] Figure 8 : is the initial dental model corresponding to step S1 of the present invention. Fig. 9 : is a schematic diagram of step S4 of the welding process of the present invention. Fig.10 : is a schematic diagram of step S8 of the welding process of the present invention. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0052] In the description of the present invention, "first feature" and "second feature" may include one or more of the features. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0053] The present invention will be further described below in conjunction with the accompanying drawings.

[0054] Example 1: Reference Figures 1 to 10 A method for welding a bracket base plate of a personalized multi-tooth orthodontic appliance is shown, comprising the following steps:

[0055] S1: Obtain the patient's three-dimensional digital information of the jaws, use the design software to build an initial jaw model based on the jaw information, and continue to use the design software to perform virtual tooth arrangement based on the initial jaw model to obtain a patient-specific target jaw model that meets the treatment goals;

[0056] In this step, a digital intraoral 3D scanner is used to directly scan the jaws intraorally to obtain 3D digital information of the jaws; then, an initial jaw model and a target jaw model are constructed using one of the design softwares, 3shape, Maestro-ortho, Bluesky-ortho, and Meshlab. The initial jaw model constructed in one example is as follows: Figure 8 shown.

[0057] S2: using design software, according to the initial jaw model and the target jaw model, the main body 3 of the orthodontic appliance is three-dimensionally positioned on the initial jaw model, and personalized base plates 4 corresponding to the teeth are designed in combination with the tooth surface morphology and occlusal state of the teeth;

[0058] The personalized base plate 4 has a first welding surface 41 for corresponding welding with the corresponding corrector body 3; the corrector body 3 has a second welding surface 311 corresponding to the first welding surface 41;

[0059] S3: In the design software, a three-dimensional model of the base 1 is designed and constructed, and the personalized base plate 4 designed in step S2 is coordinate-converted in combination with the arrangement of the limiting structure of the orthodontic appliance body corresponding to the teeth on the locator, and arranged on the three-dimensional model of the base 1;

[0060] The shape of the orthodontic main body corresponding to the teeth at different positions of the human dentition is different. For example, the first molar and the second molar in the oral cavity usually use buccal and lingual tubes (a type of orthodontic device, whose structure also includes an orthodontic main body and a base plate, which is a conventional technology and will not be described in detail). Therefore, the limiting structure of the orthodontic main body corresponding to the teeth at different positions on the positioner is different, so as to adapt to the orthodontic main body of the teeth at different positions for better embedding or clamping and fixing.

[0061] More specifically, the second welding surface of the orthodontic appliance body with different morphologies corresponding to different teeth and the morphologies of the corresponding first welding surface also have certain differences, but Figure 1 As shown, the first welding surface may be a regular plane, for example Figure 1 As shown, it can be a trapezoid or a square, or it can be an arc surface. Any edge shape that is convenient for path recognition and automatic welding by the welding machine is acceptable, and regular planes are preferred.

[0062] Specifically, the positioner involved in this step can be mass-produced by three-dimensional printing, that is, the arrangement of the limiting structure of the corrector body corresponding to the teeth in different positions is fixed, and the arrangement of the personalized base plate of the corrector corresponding to the teeth in different positions is arranged corresponding to the limiting structure of the corrector body, that is, their arrangement is also fixed.

[0063] The positioner can be made of metal, resin, plastic or other materials.

[0064] In specific implementation, the personalized base plate 4 arranged on the base 1 in step S3 may correspond to one or more sets of orthodontic body corresponding to the entire dentition of one patient, or one or more sets of orthodontic body corresponding to the entire dentition of multiple patients, or orthodontic body corresponding to multiple teeth of one patient or multiple patients.

[0065] For example: the personalized base plate arranged on the base 1 may correspond to a set of orthodontic appliance bodies corresponding to the entire dentition of a patient;

[0066] Or the personalized base plate arranged on the base 1 may correspond to two or more sets of orthodontic appliance bodies corresponding to the full dentition of one patient;

[0067] Alternatively, the personalized base plate arranged on the base 1 may correspond to one set of corrector bodies corresponding to the full dentition of two patients, that is, a total of two sets of full-teeth corrector bodies. The above is not limited and the corresponding corrector bodies can be designed and arranged on the base according to actual needs.

[0068] S4: After aligning the second welding surface 311 of the corrector body 3 with the first welding surface 41 of the corresponding personalized base plate using the design software, the welding edge shape coordinates are obtained, and the automated laser welding path is calculated and generated;

[0069] S5: After the base with the personalized bottom plate 4 is manufactured, grinding and polishing are performed;

[0070] The manufacturing operation of the base on which the personalized bottom plate 4 is arranged can be directly manufactured by integrated printing using 3D printing technology;

[0071] Alternatively, the base 1 is first manufactured using CNC technology, and then a personalized base plate 4 is printed on the base 1 by three-dimensional positioning grafting using an SLM printer;

[0072] S6: placing the base 1 with the personalized base plate 4 after the grinding and polishing treatment in step S5 on the workbench of the laser welding machine, embedding or clamping the main body of the orthodontic appliance corresponding to the teeth on the locator 2 through the corresponding limiting structure 23, and then positioning and connecting the locator 2 with the base through the positioning limiting structure;

[0073] Alternatively, a numerical control robot arm is used to perform numerical control positioning according to the arrangement of the personalized bottom plate 4 on the base and the relative position relationship between the corrector body embedded or clamped by the limiting structure 23 on the positioner, so as to position and fit the first welding surface 41 of the personalized bottom plate 4 with the corresponding second welding surface 311 of the corrector body 3;

[0074] S7: using a laser welding machine, according to the automated laser welding path obtained in step S4, first partially weld the first welding surface 41 of the partially exposed personalized base plate 4 and the welding edge of the second welding surface 311 of the positioned and fitted corrector body 3, preliminarily weld and fix the corrector body 3 and the personalized base plate 4, then manually or by a CNC robot arm remove the positioner 2 so that the welding edge is fully exposed, and then complete the complete welding of the welding edge of the corrector body and the personalized base plate according to the automated laser welding path obtained in step S4;

[0075] S8: After the personalized base plate after welding the corrector body is cut off from the base plate and polished, a personalized corrector for clinical use can be obtained.

[0076] In the embodiment, the base 1 is a flat plate, for example Figure 1 and Figure 2 As shown, Figure 1 The above is a base designed or printed in step S3, on which a personalized base plate is arranged. The personalized base plates are arranged in rows on the same straight line to facilitate one-time positioning. The base plate is, for example, a Japanese-shaped or a Chinese-shaped plate, and the implementation method is not limited. Correspondingly, the corresponding corrector body limiting structure on the locator is arranged in a straight line.

[0077] Preferably, a through hole is provided in the middle of the base, and at least one horizontal plate is provided on both side walls of the through hole. The personalized bottom plate is arranged on the horizontal plate and on the frame of the base plate to facilitate arranging the personalized bottom plates in rows.

[0078] The positioning and limiting structure includes a positioning post 12 and a positioning slot 22 corresponding to the positioning post 12. The positioning post 12 is located on the base 1, and the positioning slot 22 is located on the positioner 2. In this embodiment, the positioning posts are at least distributed at the four corners of the base 1 to facilitate better stable positioning.

[0079] The corrector body 3 is standardized and mass-produced according to the teeth at the corresponding positions by using metal powder injection molding technology or computer digital controlled precision machining technology. The shape of the corrector body is different for teeth at different positions. For example, the buccal tube, the corrector body 3 is standardized and mass-produced according to the teeth at different positions, and the corresponding corrector body 3 is selected according to the personalized base plate corresponding to the teeth at different positions on the base. Specifically, the corrector body is provided with a standard welding block 31 according to the corresponding personalized base plate, and the welding block 31 has a standard second welding surface 311.

[0080] There may be another embodiment, wherein the positioner 2 is standardized and mass-produced using metal powder injection molding technology, computer digital controlled precision machining technology, or three-dimensional printing technology; the limiting structure includes a limiting hole, and a snap-in structure is designed in the limiting hole according to the shape of the corrector body (designing different snap-in structures according to the shape is a prior art and will not be described here), so as to embed, snap, or clamp the corrector body.

[0081] There may be another embodiment. In a specific application, the limiting hole needs to make the welding edges of the first welding surface and the second welding surface exposed through the limiting hole after the corrector body is installed on the locator, so that the laser of the laser welding machine can directly weld the welding edges.

[0082] In another embodiment, a magnet is provided in the limiting hole to adsorb the corrector body partially embedded therein by magnetic attraction to further stabilize and fix it. When the corrector body is embedded or clamped on the positioner 2 through the corresponding limiting structure 23, the bracket wing of the corrector body faces the limiting hole and is inserted into the limiting hole until it is fixed by snapping or magnetic attraction.

[0083] Fig. 9 This is a schematic diagram of the connection between the positioner and the base through the positioning and limiting structure. Fig.10 The operation of removing the positioner in step S7 is shown, in which the positioner 2 is moved upward, and the positioner is separated from the orthosis body welded to the personalized base plate.

[0084] The design software in step S1 to step S4 is one of 3shape, Maestro-ortho, Bluesky-ortho, and Meshlab.

[0085] Embodiment 2: Compared with Embodiment 1, in step 3, in the present embodiment, only the three-dimensional model of the base 1 can be designed and constructed in the design software, and the personalized base plate 4 designed in step S2 is coordinate-converted and arranged on the three-dimensional model of the base 1;

[0086] That is, the arrangement of the personalized base plate in this step does not need to consider the positioner, and its arrangement is more free.

[0087] Then, in step S6, the base 1 with the personalized bottom plate 4 arranged thereon, which is manufactured in step S5, is placed on the workbench of the laser welding machine, and the CNC robot arm holding the corrector body 3 is controlled according to the three-dimensional coordinate positioning, so that the first welding surface 311 of the corrector body 3 is positioned and fitted with the corresponding second welding surface 41 of the personalized bottom plate 4 one by one;

[0088] Then, in step S7, the automated laser welding path obtained in step S4 is directly used to complete the complete welding of the corrector body and the welding edge of the personalized base plate one by one.

[0089] Compared with the first embodiment, the present embodiment can weld the main bodies of the orthodontic appliances for multiple teeth at one time without using a positioner.

[0090] The present invention and its embodiments are described above, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and do not deviate from the purpose of the invention, they can creatively design a structure and embodiment similar to the technical solution, which should fall within the protection scope of the present invention.

Claims

1. A method for mass positioning welding of orthodontic personalized corrector base plates, characterized in that: It includes the following steps: S1: Obtain the patient's three-dimensional digital information of the jaws, use the design software to build an initial jaw model based on the jaw information, and continue to use the design software to perform virtual tooth arrangement based on the initial jaw model to obtain a patient-specific target jaw model that meets the treatment goals; S2: Using the design software, according to the initial jaw model and the target jaw model, the main body of the orthodontic appliance is three-dimensionally positioned on the initial jaw model, and a personalized base plate corresponding to each tooth is designed in combination with the tooth surface morphology and occlusal state; The personalized base plate has a first welding surface for corresponding welding with the corresponding corrector body; the corrector body has a second welding surface corresponding to the first welding surface; S3: In the design software, a three-dimensional model of the base is designed and constructed, and the personalized base plate designed in step S2 is coordinate-converted in combination with the arrangement of the limiting structure of the orthodontic appliance body corresponding to the teeth on the locator, and is arranged on the three-dimensional model of the base; S4: After aligning the second welding surface of the corrector body with the first welding surface of the corresponding personalized base plate using the design software, the coordinates of the welding edge shape are obtained, and the automated laser welding path is calculated and generated; S5: After the base with the personalized base plate is made, it is polished; The manufacturing operation of the base arranged with the personalized bottom plate can be directly printed and manufactured in one piece using 3D printing technology; Or first use CNC technology to make the base, and then use the SLM printer to three-dimensionally position and graft the personalized base plate on the base; S6: placing the base with the personalized base plate arranged after the grinding and polishing treatment in step S5 on the workbench of the laser welding machine, embedding or clamping the main body of the orthodontic appliance corresponding to the teeth on the locator through the corresponding limiting structure, and then positioning and connecting the locator with the base through the positioning limiting structure; Alternatively, a CNC robot arm is used to perform CNC positioning according to the arrangement of the personalized base plate on the base and the relative position relationship between the corrector body embedded or clamped by the limiting structure on the positioner, so as to position and fit the first welding surface of the personalized base plate with the corresponding second welding surface of the corrector body; S7: using a laser welding machine, according to the automated laser welding path obtained in step S4, first partially weld the first welding surface of the partially exposed personalized base plate with the welding edge of the second welding surface of the positioned and fitted corrector body, preliminarily weld and fix the corrector body and the personalized base plate, then manually or by a CNC robot arm remove the positioner so that the welding edge is fully exposed, and then complete the complete welding of the welding edge of the corrector body and the personalized base plate according to the automated laser welding path obtained in step S4; S8: After the personalized base plate after welding the corrector body is cut off from the base plate, the personalized base plate is polished to obtain the personalized corrector.

2. A method for mass positioning welding of orthodontic personalized corrector base plates according to claim 1, characterized in that: The personalized base plate arranged on the base in step S3 may correspond to one or more sets of orthodontic main bodies corresponding to all teeth of one patient, or one or more sets of orthodontic main bodies corresponding to all teeth of multiple patients, or orthodontic main bodies corresponding to multiple teeth of one patient or multiple patients.

3. A method for mass positioning welding of orthodontic personalized corrector base plates according to claim 1, characterized in that: The design software in step S1 to step S4 is one of 3shape, Maestro-ortho, Bluesky-ortho, and Meshlab.

4. A method for mass positioning welding of orthodontic personalized corrector base plates according to claim 1, characterized in that: The 3D printing technology in step S5 is one of metal 3D printing, 3D printing wax pattern technology, or resin light-curing 3D printing technology.

5. A method for mass positioning welding of orthodontic personalized corrector base plates according to claim 1, characterized in that: The base and the positioner are respectively flat plates.

6. A method for mass positioning welding of orthodontic personalized corrector base plates according to claim 4, characterized in that: The positioning and limiting structure includes a positioning post and a positioning slot corresponding to the positioning post.

7. A method for mass positioning welding of orthodontic personalized corrector base plates according to claim 6, characterized in that: The positioning post is located on the base, and the positioning slot is located on the positioner.

8. A method for mass positioning welding of orthodontic personalized corrector base plates according to claim 1, characterized in that: The main body of the orthodontic appliance is produced in standardized batches by using metal powder injection molding technology or computer digital controlled precision machining technology according to the shape required by the corresponding tooth position.

9. A method for mass positioning welding of orthodontic personalized corrector base plates according to claim 4, characterized in that: The positioner is produced in standardized batches by using metal powder injection molding technology or computer digital controlled precision machining technology or three-dimensional printing technology.

10. A method for mass positioning welding of orthodontic personalized corrector base plates according to claim 1, characterized in that: In step S3, only the three-dimensional model of the base can be designed and constructed in the design software, and the personalized base plate designed in step S2 can be coordinate-converted and arranged on the three-dimensional model of the base; Then in step S6, the base with the personalized bottom plate arranged thereon produced in step S5 is placed on the workbench of the laser welding machine, and the CNC mechanical arm holding the corrector body is controlled according to the three-dimensional coordinate positioning, and the first welding surface of the corrector body is positioned and bonded with the second welding surface of the corresponding personalized bottom plate one by one; Then, in step S7, the automated laser welding path obtained in step S4 is directly used to complete the complete welding of the corrector body and the welding edge of the personalized base plate one by one.

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