Digitized customized self-ligating bracket bottom plate preparation tool for tooth correction

Abstract

The utility model discloses a digitalized customized self-ligating bracket bottom plate preparation tool for tooth correction, which relates to the technical field of orthodontic medical instruments and comprises a bracket main body, the preparation tool comprises a bracket bottom plate, a mandrel, four fixing sleeve petals and a limiting sleeve, and a main body welding surface is arranged at the lower end of the bracket main body. A first gingival-jaw-direction vertical face and a second gingival-jaw-direction vertical face are arranged at the two ends of the bracket bottom plate, a bottom plate tool is arranged at the lower end of the mandrel, a glue injection cavity is formed in the limiting sleeve, the glue injection cavity is filled with soluble cold inlay resin, tooth data of a patient are obtained through oral cavity scanning in the early clinical stage, and a manufacturer obtains the tooth data through professional software. The digital customized self-ligating bracket with different axial inclination angles, different torque angles and different bottom plate bonding surfaces is designed for each tooth, finally, a bracket body and a bottom plate are welded into a whole, it is ensured that the torque angle and the axial inclination angle of a bracket product after welding are not changed, and accurate expression of personalized parameters such as the torque angle and the axial inclination angle is achieved.

Description

Technical Field

[0001] This utility model relates to the field of dental orthodontic medical device technology, and in particular to a tooling for preparing a digitally customized self-locking bracket base plate for orthodontic treatment. Background Technology

[0002] Self-ligating brackets are devices made by using orthodontic adhesives to fix them to the surface of the tooth crown. They are used to fix the archwire and transmit the orthodontic force of the archwire to the teeth to achieve the purpose of orthodontic treatment. Mass-produced self-ligating brackets include a bracket body and a base plate connected to the bracket body. The bracket body has an archwire slot for the archwire to pass through. The opening of the archwire slot faces away from the base plate. The bracket body has a positive ligating wing and a secondary ligating wing located on both sides of the archwire slot. The side of the base plate facing away from the bracket body is the bonding surface to the tooth crown. The secondary ligating wing has a sliding surface. A sliding locking piece is slidably connected to the sliding surface and can move towards or away from the archwire slot. The sliding locking piece is used to open the archwire slot for the archwire to be inserted and removed, or to close the archwire slot to fix the archwire to the bracket body.

[0003] However, the above method has a prominent hardware structural problem: the bonding surface shape, axial tilt angle, torque angle, and other parameters of mass-produced self-ligating bracket base plates are all serialized fixed data, which cannot achieve personalized and precise treatment for individual patients. This increases the patient's orthodontic pain and reduces the orthodontic effect. In addition, the different crown surfaces of different patients do not fit well with the fixed-shape bonding surface of the base plate, which can easily lead to the self-ligating bracket falling off due to weak adhesion. It is also not conducive to the accurate expression of the torque angle, affecting the orthodontic effect. Limited by the processing precision of existing 3D printing equipment, although the printed base plate can ensure shape accuracy, thus ensuring the base plate's performance, the overall quality is still limited. The bonding surface of the plate fits perfectly with the tooth surface, but the printed base plate surface is rough. The welding surface of the base plate cannot fit well with the welding surface of the bracket body, affecting the welding strength between the base plate and the bracket body. Therefore, the welding surface of the base plate needs to be polished to improve the welding strength. The bracket base plate is small in volume and thin in thickness. When polishing the welding surface of the base plate by hand, it is not possible to grind a standard r1 arc surface that is the same as the welding surface of the main body. The ground surface is uneven, which still cannot guarantee the perfect fit between the welding surface of the base plate and the welding surface of the main body. This directly affects the welding strength between the bracket base plate and the bracket body and the accurate expression of personalized parameters such as torque angle and axial tilt angle of the bracket product. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a digitally customized self-ligating bracket base plate preparation tooling for orthodontic treatment. This tooling solves the problem that parameters such as the bonding surface shape, axial tilt angle, and torque angle of mass-produced self-ligating bracket base plates are all standardized and fixed data, making it impossible to achieve personalized and precise treatment for individual patients. This increases patient discomfort and reduces treatment effectiveness. Furthermore, the different crown surfaces of different patients do not adhere well to the fixed-shape base plate bonding surface, easily leading to bracket detachment due to weak adhesion. It also hinders the accurate expression of the torque angle, affecting treatment results. Limited by the processing precision of existing 3D printing equipment, although the printed base plate can guarantee the shape... To ensure the perfect fit between the base plate bonding surface and the tooth surface, the printed base plate surface is rough, and the base plate welding surface cannot fit well with the bracket body welding surface, affecting the welding strength between the base plate and the bracket body. Therefore, it is necessary to polish the base plate welding surface to improve the welding strength. The bracket base plate is small and thin. When polishing the base plate welding surface by hand, it is not possible to grind a standard r1 arc surface that is the same as the main body welding surface. The ground surface is uneven, which still cannot guarantee the perfect fit between the base plate welding surface and the main body welding surface. This directly affects the welding strength between the bracket base plate and the bracket body, as well as the technical problem of accurately expressing personalized parameters such as torque angle and axial tilt angle of the bracket product.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A digitally customized self-ligating bracket base preparation tool for orthodontic treatment includes a bracket body, and the preparation tool includes a bracket base plate, a mandrel, four fixing flaps, and a limiting sleeve. The lower end of the bracket body is provided with a main welding surface, and the two ends of the bracket base plate are provided with a gingival-maxillary vertical surface one and a gingival-maxillary vertical surface two. The lower end of the mandrel is provided with a base plate tool, and the limiting sleeve has an injection cavity inside, which is filled with soluble cold-mounting resin.

[0007] Preferably, the mandrel consists of a clamping cylindrical surface, an adhesive injection cylindrical surface, and a positioning cylindrical surface.

[0008] Preferably, the radius of the clamping cylindrical surface is smaller than the radius R of the glue-injecting cylindrical surface, and the length is 10-60mm.

[0009] Preferably, the radius of the injection cylinder is smaller than the radius of the positioning cylinder, and the length is 10-80mm.

[0010] Preferably, the radius of the positioning column surface is the same as the radius of the welded surface of the base plate after machining. The fixed sleeve is composed of a positioning surface, a limiting groove, and an injection surface. The positioning surface is located at the upper end of the fixed sleeve, and the radius of the positioning surface is the same as the radius of the injection column surface of the mandrel.

[0011] Preferably, the radius of the glue injection surface is the same as that of the positioning cylindrical surface of the mandrel.

[0012] Preferably, the bottom surface of the limiting groove is a cylindrical surface with the same radius as the welding surface of the base plate before processing. The bottom surface of the limiting groove is in close contact with the welding surface of the base plate. The two sides of the limiting groove are in close contact with the first and second gingival-maxillary vertical surfaces of the bracket base plate. An adhesive surface is provided at the lower end of the welding surface of the base plate. The limiting sleeve consists of an upper limiting surface, a lower limiting surface, and windows. The inner diameter of the limiting sleeve is the same as the outer diameter of the fixed sleeve flap. The height of the limiting sleeve is the same as the fixed sleeve flap. Four hollowed-out windows are provided in the middle of the limiting sleeve.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Initial clinical trials use oral scans to obtain patient tooth data. The manufacturer then uses specialized software to design digitally customized self-ligating brackets with different axial tilt angles, torque angles, and base plate bonding surfaces for each tooth. During subsequent product manufacturing, the bracket body undergoes precision sculpting to ensure the relative positional accuracy of each functional structure. The radius of curvature of the bracket body's welding surface is designed to be r1. The base plate is 3D printed to ensure that each base plate bonding surface better fits the corresponding tooth bonding surface, improving bonding strength. The radius of curvature of the base plate's welding surface is also designed to be r1. Finally, the bracket body and base plate are welded together, ensuring that the torque angle and axial tilt angle of the bracket product do not change after welding, thus achieving precise expression of personalized parameters such as torque angle and axial tilt angle.

[0015] 2. First, fix the welding surface of the 3D printed base plate to the limiting groove of the fixing sleeve with glue. Then, assemble the tooling and inject soluble cold-mounting resin into the tooling. After the resin solidifies, disassemble the tooling. The resin fixes the base plate to the mandrel column surface of the tooling. Then, clamp the mandrel on a lathe and turn the welding surface of the base plate to r1 to obtain a standard arc surface with the same as the welding surface of the main body. Finally, immerse the mandrel with the bracket base plate bonded to it in acetone or dichloromethane. The soluble cold-mounting resin dissolves in the acetone or dichloromethane. The processed base plate is then removed from the mandrel. When the bracket base plate and the bracket body are welded in this way, the welding surfaces of the two can fit together completely, ensuring the welding strength of the two and the accurate expression of personalized parameters such as the torque angle and axial tilt angle of the bracket. Attached Figure Description

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is a structural diagram of the entire utility model;

[0018] Figure 2 This is a structural diagram of the bracket body of this utility model;

[0019] Figure 3 This is a structural diagram of the gingival-maxillary elevation of this utility model;

[0020] Figure 4 This is a structural diagram of the welding surface of the base plate of this utility model;

[0021] Figure 5 This is a structural diagram of the second elevation of the gingival and maxillary direction of this utility model;

[0022] Figure 6 This is a structural diagram of the base plate tooling of this utility model;

[0023] Figure 7 This is a structural diagram of the bonding surface of this utility model;

[0024] Figure 8 This is a structural diagram of the clamping cylindrical surface of this utility model;

[0025] Figure 9 This is a structural diagram of the fixed sleeve of this utility model.

[0026] Figure 10 This is a structural diagram of the bracket base plate of this utility model;

[0027] Figure 11 This is a structural diagram of the mandrel of this utility model;

[0028] Figure 12 This is a structural diagram of the lower limit surface of this utility model.

[0029] Legend: 100, Bracket body; 101, Main body welding surface; 2, Base plate fixture; 200, Bracket base plate; 201, Base plate welding surface; 202, Bonding surface; 203, Gingival-maxillary vertical surface one; 204, Gingival-maxillary vertical surface two; 300, Mandrel; 301, Clamping cylindrical surface; 302, Glue injection cylindrical surface; 303, Positioning cylindrical surface; 400, Fixing flap; 401, Positioning surface; 402, Limiting groove; 403, Glue injection surface; 500, Glue injection cavity; 600, Limiting sleeve; 601, Upper limiting surface; 602, Lower limiting surface; 603, Window; 700, Soluble cold-applied resin. Detailed Implementation

[0030] This application provides a digitally customized self-ligating bracket base plate manufacturing tooling for orthodontic treatment. This effectively solves the problem that parameters such as the bonding surface shape, axial tilt angle, and torque angle of mass-produced self-ligating bracket base plates are all serialized and fixed data, making it impossible to achieve personalized and precise treatment for individual patients. This increases patient discomfort and reduces treatment effectiveness. Furthermore, the different crown surfaces of different patients do not fit well with the fixed-shape base plate bonding surface, easily leading to bracket detachment due to weak adhesion. This also hinders the accurate expression of the torque angle, affecting treatment results. Limited by the processing precision of existing 3D printing equipment, although the printed base plate can guarantee shape accuracy... This ensures a perfect fit between the base plate bonding surface and the tooth surface. However, the printed base plate surface is rough, and the base plate welding surface cannot fit well with the bracket body welding surface, affecting the welding strength between the base plate and the bracket body. Therefore, it is necessary to polish the base plate welding surface to improve the welding strength. The bracket base plate is small in size and thin in thickness. When manually polishing the base plate welding surface, it is not possible to grind a standard r1 arc surface that is the same as the main body welding surface. The ground surface is uneven, which still cannot guarantee a perfect fit between the base plate welding surface and the main body welding surface. This directly affects the welding strength between the bracket base plate and the bracket body, as well as the technical problem of accurately expressing personalized parameters such as torque angle and axial tilt angle of the bracket product.

[0031] Example

[0032] like Figures 1-12 As shown, the technical solution in this application effectively solves the problem that the parameters such as the bonding surface shape, axial tilt angle, and torque angle of mass-produced self-ligating bracket base plates are all serialized and fixed data, which cannot achieve personalized and precise treatment for individual patients, increasing the patient's orthodontic pain and reducing the orthodontic effect. In addition, the different crown surfaces of different patients do not fit well with the fixed-shape bonding surface of the base plate, which can easily lead to the self-ligating bracket falling off due to weak bonding. It is also not conducive to the accurate expression of the torque angle, affecting the orthodontic effect. Limited by the processing precision of existing 3D printing equipment, although the printed base plate can ensure shape accuracy, thereby ensuring the bonding surface of the base plate and the tooth While the surfaces fit perfectly, the printed base plate has a rough surface, preventing the base plate welding surface from adhering well to the main body welding surface. This affects the welding strength between the base plate and the main body. Therefore, polishing is required to improve the welding strength. Due to the small size and thinness of the base plate, manual polishing of the welding surface cannot produce a standard r1 arc surface identical to the main body welding surface. The resulting surface is uneven, further compromising the perfect fit between the base plate welding surface and the main body welding surface. This directly impacts the welding strength between the base plate and the main body, as well as the technical issues related to the accurate expression of personalized parameters such as torque angle and axial tilt angle in the bracket product. The overall approach is as follows:

[0033] To address the problems existing in the prior art, this utility model provides a digitally customized self-ligating bracket base preparation tool for orthodontic treatment, including a bracket body 100, and a preparation tool including a bracket base 200, a mandrel 300, four fixing flaps 400, and a limiting sleeve 600. The lower end of the bracket body 100 is provided with a main welding surface 101. The two ends of the bracket base 200 are provided with a gingival-maxillary vertical surface 203 and a gingival-maxillary vertical surface 204. The lower end of the mandrel 300 is provided with a base tool 2. The limiting sleeve 600 has an injection cavity 500 inside, filled with soluble cold-mounting resin 700. The mandrel 300 consists of a clamping cylindrical surface 301, an injection cylindrical surface 302, and a positioning cylindrical surface 303, and is made of alloy tool steel or mold steel. First, the 3D-printed base plate welding surface 201... The base plate is fixed in the limiting groove 402 of the fixing sleeve with glue. Then the tooling is assembled and soluble cold-mounting resin 700 is injected into the tooling. After the resin solidifies, the tooling is disassembled. The resin fixes the base plate to the cylindrical surface of the mandrel 300 of the tooling. The mandrel 300 is then clamped on a lathe and the welding surface 201 of the base plate is machined to r1 to obtain a standard arc surface with the same as the welding surface 101 of the main body. Finally, the mandrel 300 with the bracket base plate 200 bonded to it is immersed in acetone or dichloromethane. The soluble cold-mounting resin 700 dissolves in the acetone or dichloromethane. The processed base plate is detached from the mandrel 300. When the bracket base plate 200 and the bracket body 100 are welded in this way, the welding surfaces of the two can be completely fitted, ensuring the welding strength of the two and the accurate expression of personalized parameters such as the torque angle and axial tilt angle of the bracket.

[0034] The radius of the clamping cylindrical surface 301 is smaller than the radius of the glue-injecting cylindrical surface 302, and the length is 10-60mm. The radius of the glue-injecting cylindrical surface 302 is smaller than the radius of the positioning cylindrical surface 303, and the length is 10-80mm. The radius of the positioning cylindrical surface 303 is the same as the radius of the base plate welding surface 201 after processing.

[0035] The outer part of the fixed sleeve 400 is a 1 / 4 cylindrical surface with a radius of R6. The inner part of the fixed sleeve 400 consists of a positioning surface 401, a limiting groove 402, and an injection surface 403. The positioning surface 401 is located at the upper end of the fixed sleeve 400, with a height h=3~6mm. It is formed by hollowing out the middle section of the 1 / 4 annular cylindrical surface with a cylindrical surface of radius R3. The radius of the positioning surface 401 is the same as that of the injection cylindrical surface 302 of the mandrel 300. The hollowed-out part forms an injection channel. The injection surface 403 is a 1 / 4 cylindrical surface with a radius of R3. The radius of the injection surface 403 is the same as that of the positioning cylindrical surface 303 of the mandrel 300.

[0036] The width B of the limiting groove 402 is slightly larger than the width h of the base plate. The depth of the limiting groove 402 is the difference (r-r1) between the radius r before machining and the radius r1 after machining of the welding surface 201 of the base plate. The bottom surface of the limiting groove 402 is a cylindrical surface with the same radius as the radius of the welding surface 201 of the base plate before machining. The bottom surface of the limiting groove 402 is in close contact with the welding surface 201 of the base plate. The two sides of the limiting groove 402 are aligned with the gingival-maxillary vertical surface 203 of the bracket base plate 200. The gingival-maxillary vertical surface 204 fits tightly. An adhesive surface 202 is provided at the lower end of the base plate welding surface 201. The limiting sleeve 600 is made of alloy tool steel or mold steel. The limiting sleeve 600 consists of an upper limiting surface 601, a lower limiting surface 602, and a window 603. The limiting sleeve 600 is a tubular component. The inner diameter of the limiting sleeve 600 is the same as the outer diameter of the fixing flap 400, and the height of the limiting sleeve 600 is the same as that of the fixing flap 400. The limiting sleeve 600 has four hollowed-out windows 603 in the middle. In the early clinical stage, the patient's tooth data is obtained through oral scanning. The manufacturer uses professional software to design digitally customized self-ligating brackets with different axial tilt angles, torque angles, and base plate bonding surfaces 202 for each tooth. In the later product processing, the bracket body 100 is processed by 5-axis precision carving to ensure the relative positional accuracy of each functional structure. The radius of curvature of the welding surface of the bracket body 100 is designed to be r1. The base plate is 3D printed to make each base plate bonding surface 202 better fit the corresponding tooth bonding surface 202, improving the bonding strength. The radius of curvature of the welding surface 201 of the base plate is also designed to be r1. Finally, the bracket body 100 and the base plate are welded together to ensure that the torque angle and axial tilt angle of the bracket product do not change after welding, so as to achieve precise expression of personalized parameters such as torque angle and axial tilt angle.

[0037] Working principle:

[0038] Initial clinical trials use oral scans to obtain patient tooth data. The manufacturer then uses specialized software to design digitally customized self-ligating brackets with different axial tilt angles, torque angles, and base plate bonding surfaces 202 for each tooth. During subsequent product manufacturing, the bracket body 100 undergoes 5-axis precision machining to ensure the relative positional accuracy of each functional structure. The radius of curvature of the welding surface of the bracket body 100 is designed to be r1. The base plate is 3D printed to ensure that each base plate bonding surface 202 better fits the corresponding tooth bonding surface 202, improving bonding strength. The radius of curvature of the base plate welding surface 201 is also designed to be r1. Finally, the bracket body 100 and the base plate are welded together, ensuring that the torque angle and axial tilt angle of the bracket product do not change after welding. This achieves precise expression of personalized parameters such as torque angle and axial tilt angle. The 3D printing process is the first step. The base plate welding surface 201 is fixed to the limiting groove 402 of the fixing sleeve with glue. Then, the tooling is assembled, and soluble cold-mounting resin 700 is injected into the tooling. After the resin solidifies, the tooling is disassembled, and the resin fixes the base plate to the cylindrical surface of the mandrel 300 of the tooling. Then, the mandrel 300 is clamped on a lathe and the base plate welding surface 201 is machined to r1 to obtain a standard arc surface with the same as the main body welding surface 101. Finally, the mandrel 300 with the bracket base plate 200 is immersed in acetone or dichloromethane, and the soluble cold-mounting resin 700 dissolves in acetone or dichloromethane. The processed base plate is detached from the mandrel 300. When the bracket base plate 200 and the bracket body 100 are welded in this way, the welding surfaces of the two can be completely attached, ensuring the welding strength of the two and the accurate expression of personalized parameters such as the torque angle and axial tilt angle of the bracket.

[0039] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A tooling for preparing a digitally customized self-ligating bracket base plate for orthodontic treatment, comprising a bracket body (100), characterized in that, The preparation tooling includes a base plate (200), a mandrel (300), four fixed sleeves (400), and a limiting sleeve (600). The bracket body (100) has a main welding surface (101) at its lower end, the bracket base plate (200) has a gingival-maxillary vertical surface one (203) and a gingival-maxillary vertical surface two (204) at both ends, the mandrel (300) has a base plate fixture (2) at its lower end, the limiting sleeve (600) has an injection cavity (500) inside, and the injection cavity (500) is filled with soluble cold-mounting resin (700).

2. The tooling for preparing a digitally customized self-ligating bracket base plate for orthodontic treatment as described in claim 1, characterized in that: The mandrel (300) consists of a clamping cylindrical surface (301), an adhesive injection cylindrical surface (302), and a positioning cylindrical surface (303).

3. The tooling for preparing a digitally customized self-ligating bracket base plate for orthodontic treatment as described in claim 2, characterized in that: The radius of the clamping cylindrical surface (301) is smaller than the radius of the glue-filling cylindrical surface (302), and the length is 10-60mm.

4. The tooling for preparing a digitally customized self-ligating bracket base plate for orthodontic treatment as described in claim 3, characterized in that: The radius of the injection cylinder (302) is smaller than the radius of the positioning cylinder (303), and the length is 10-80mm.

5. The tooling for preparing a digitally customized self-ligating bracket base plate for orthodontic treatment as described in claim 4, characterized in that: The radius of the positioning column surface (303) is the same as the radius of the base plate welding surface (201) after machining.

6. The tooling for preparing a digitally customized self-ligating bracket base plate for orthodontic treatment as described in claim 5, characterized in that: The fixed sleeve (400) is composed of a positioning surface (401), a limiting groove (402), and an adhesive injection surface (403).

7. The tooling for preparing a digitally customized self-ligating bracket base plate for orthodontic treatment as described in claim 6, characterized in that: The positioning surface (401) is located at the upper end of the fixed sleeve (400), and the radius of the positioning surface (401) is the same as that of the glue injection cylindrical surface (302) of the mandrel (300), and the radii are equal.

8. The tooling for preparing a digitally customized self-ligating bracket base plate for orthodontic treatment as described in claim 7, characterized in that: The radius of the injection surface (403) is the same as that of the positioning cylindrical surface (303) of the mandrel (300). The bottom surface of the limiting groove (402) is a cylindrical surface with the same radius as the base plate welding surface (201) before processing. The bottom surface of the limiting groove (402) is in close contact with the base plate welding surface (201). The two sides of the limiting groove (402) are in close contact with the gingival and occlusal vertical surface one (203) and the gingival and occlusal vertical surface two (204) of the bracket base plate (200). The lower end of the base plate welding surface (201) is provided with an adhesive surface (202). The limiting sleeve (600) consists of an upper limiting surface (601), a lower limiting surface (602), and a window (603). The inner diameter of the limiting sleeve (600) is the same as the outer diameter of the fixed sleeve (400), and the height of the limiting sleeve (600) is the same as that of the fixed sleeve (400). The limiting sleeve (600) has four hollowed-out windows (603) in the middle.

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