Bracket positioning and moisture insulation device based on 3D printing and manufacturing method

Abstract

The invention discloses a bracket positioning and moisture insulation device based on 3D printing and a manufacturing method, a bracket positioning guide plate is positioned on a buccal lingual surface, and the design can well fit the natural form of teeth. And the positioning accuracy is further enhanced through the retainers arranged on the two sides. The retainer can be stably fixed on teeth to limit the movement of the bracket positioning guide plate in the buccal tongue direction and the mesiodistal direction, so that the position of the guide plate is ensured not to deviate. The cheek screen and the tongue block are arranged to bring a good moisture insulation environment for orthodontic operation. When operations such as bracket bonding are carried out in an oral cavity, saliva can generate adverse effects on the performance of a bonding material. The cheek screen is located on the cheek side and can block saliva from the cheek direction and prevent the saliva from polluting the bracket and the bonding area. The tongue block is located on the tongue side, and it can also be avoided that saliva generated when the tongue moves disturbs operation. The moisture insulation effect is beneficial for improving the bonding strength of the bonding material. Therefore, the device provided by the invention can solve the problems in the prior art.

Description

Technical Field

[0001] The present invention belongs to the technical field of orthodontics, and relates to a bracket positioning and moisture-isolating device based on 3D printing and a manufacturing method thereof. Background Art

[0002] Silverman et al. first proposed the concept of indirect bracket bonding. The traditional bracket bonding method relies on the doctor's manual operation and subjective visual positioning, which is easily affected by personal experience and skills, resulting in inaccurate positioning, and may further prolong the treatment time. With the development of 3D printing technology, the dental field can use digital models to make precise guides. At the same time, combined with computer-aided design (CAD) technology, doctors can design and simulate the optimal position of brackets in a virtual environment, thereby improving the accuracy of bracket bonding, shortening the doctor's chairside operation time, and improving work efficiency. At present, more and more clinical studies have shown that indirect bracket bonding technology has significant advantages in improving bracket bonding accuracy and treatment effects, but it also has certain disadvantages, such as the large coverage area of ​​the guide plate, the difficulty of moisture-proof operation of the mandibular posterior teeth segment bonding, and the difficulty in removing residual adhesives. The manufacturing material requires high flexibility.

[0003] The moisture isolation of mandibular posterior teeth is crucial for the oral medicine industry in clinical operations, such as using resin pads to open the posterior teeth to open the bite in the orthodontic department, bonding brackets or tongue twisting on the buccal and lingual surfaces of mandibular posterior teeth, and resin filling of posterior teeth in the endodontic department. If the tooth surface before curing the resin has been contaminated by saliva, the bonding force will be greatly reduced, thereby prolonging the doctor's chairside operation time and reducing the treatment effect. Therefore, cotton balls play a great role in this process. In clinical practice, standard moisture isolation of mandibular posterior teeth requires placing a total of 3 cotton balls on the buccal and lingual sides of the maxillary posterior teeth area and the mandibular posterior teeth area to achieve a good moisture isolation effect. However, due to the large range of motion and muscle strength of the buccal and lingual muscles, it is difficult to fix the cotton balls in a certain position and there is a risk of aspiration and swallowing. At the same time, when using a high-speed mobile phone to prepare teeth, soft tissue scratches are very likely to occur due to the large range of motion of the buccal mucosa and the tongue.

[0004] Existing oral bracket positioning moisture barrier devices have many limitations: Single function: Most of the existing oral opener moisture barrier devices only have moisture barrier functions, and lack other auxiliary functions such as fixation and bracket positioning. This causes medical staff to use multiple devices at the same time, increasing the complexity and time cost of clinical chairside operations. Poor patient comfort and adaptability: Due to differences in patients' oral structures and sizes, existing bracket positioning moisture barriers may not be able to fully meet the needs of all patients. Inappropriate size may cause discomfort or pain to patients; the material of some devices may not be soft or smooth enough, which may easily cause irritation or damage to the patient's oral mucosa. Durability and maintenance cost: Some oral moisture barriers are easily damaged during use, such as loose connections and broken parts. This not only affects the normal progress of clinical operations, but also increases maintenance costs and replacement frequency. Design and innovation limitations: Some existing oral opener moisture barriers are relatively conservative in design and lack innovative elements. This may result in these devices not being able to meet the needs of modern oral operations in terms of function, performance and user experience. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the prior art and to provide a bracket positioning and moisture-proofing device based on 3D printing and a manufacturing method thereof.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: The present invention provides a 3D printing-based bracket positioning and moisture-isolating device, comprising a bracket positioning guide plate, wherein the bracket positioning guide plate is located on the buccal and lingual surfaces; Retainers for accurately positioning the bracket positioning guide plate are provided on both sides of the bracket positioning guide plate, and cheek guards and tongue stops are provided on the two retainers respectively.

[0007] Preferably, the retainer comprises a retainer inner arm, a retainer middle arm and a retainer outer arm; Two ends of the retainer middle arm are connected to the retainer inner arm and the retainer outer arm respectively.

[0008] Preferably, the distance between the inner arm of the connector and the outer arm of the connector is 8 mm to 10 mm.

[0009] Preferably, a screw opener is provided on the middle arm of the retainer.

[0010] Preferably, the bracket positioning guide, the retainer inner arm, the retainer middle arm, the screw opener, the retainer outer arm, the cheek shield and the tongue stopper are all made of flexible renewable biodegradable materials.

[0011] Preferably, the retainer inner arm, the retainer middle arm and the retainer outer arm are on the same plane and are parallel to the mesiodistal direction of the tooth.

[0012] Preferably, the two retainers are symmetrically arranged.

[0013] Preferably, the shape of the cheek shield and the shape of the tongue stopper are both adapted to the arc shape of the buccal mucosa inside the oral cavity.

[0014] Preferably, the cheek shield and the tongue stopper are both arc-shaped structures.

[0015] The present invention provides a method for manufacturing a bracket positioning moisture-isolating device based on 3D printing, comprising: Obtain the three-dimensional digital intraoral scan results of the target patient; Establishing the oral model of the target patient according to the three-dimensional digital intraoral scanning results of the target patient; Determine the positions of the bracket positioning guide, retainer, buccal shield and tongue stop in the target patient's oral model; According to the bracket positioning guide, retainer, buccal shield, tongue stopper position and the target patient's oral model, three-dimensional data is obtained; The three-dimensional data is imported into a 3D printer for printing to obtain a bracket positioning moisture-proof device.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a 3D printing-based bracket positioning moisture-proof device, in which the bracket positioning guide is located on the buccal and lingual surfaces, and this design can fit the natural form of the teeth well. Because the buccal and lingual surfaces of the teeth are the key positions for bracket placement, the positioning guide directly covers this position, which can provide an accurate spatial reference for the positioning of the bracket. Just like a customized mold, it guides the bracket to be accurately placed in the position where the teeth should be, thereby ensuring that the teeth are evenly stressed and the movement direction is accurate during orthodontic treatment. The retainers set on both sides further enhance the accuracy of positioning. The retainers can be stably fixed on the teeth, limiting the movement of the bracket positioning guide in the buccal and lingual directions and the mesiodistal directions, ensuring that the position of the guide does not deviate. The setting of the cheek shield and the tongue stopper provides a good moisture-proof environment for orthodontic operations. When performing operations such as bracket bonding in the oral cavity, saliva will have an adverse effect on the performance of the bonding material. The cheek shield is located on the buccal side, which can block saliva from the cheek direction and prevent saliva from contaminating the bracket and the bonding area. The tongue stopper is located on the tongue side, which can also prevent the saliva generated when the tongue moves from interfering with the operation. This moisture-proof effect helps to improve the bonding strength of the adhesive material. For example, when using resin adhesive materials to bond brackets, if the bonding area is contaminated by saliva, the bonding performance of the resin will decrease, which will in turn affect the fixing effect of the bracket. By keeping the operating area dry through the cheek screen and tongue guard, the adhesive material can better play its bonding role, extend the service life of the bracket, and reduce treatment interruptions caused by bonding failure. Due to the presence of bracket positioning guides and retainers, it is more convenient for doctors to place and bond brackets. The guide provides an intuitive position reference for bracket positioning, and the doctor can quickly and accurately place the bracket in the correct position, reducing the operation time. At the same time, the fixing effect of the retainer makes the guide and bracket more stable during operation, which is convenient for doctors to perform delicate operations, such as adjusting the bracket angle.

[0017] Furthermore, the spiral opener is installed on the middle arm of the connector, and its adjustment function can change the distance between the mesiodistal arms, thereby affecting the tightness of the entire retainer structure, so as to better adapt to different tooth morphologies and correction requirements.

[0018] Furthermore, compared with traditional plastic or metal materials, flexible renewable biodegradable materials have less impact on the environment during the production process. When used in the mouth, flexible materials can better fit the teeth and oral tissues, and will not cause excessive pressure and friction on the oral mucosa during wearing, reducing the chance of adverse reactions such as oral ulcers. This material usually has a certain degree of elasticity, can adapt to slight changes in the mouth, maintain a good fit, ensure the treatment effect, and is less likely to cause allergic reactions or other adverse reactions when in contact with saliva and oral mucosa in the oral environment.

[0019] Furthermore, the shape that adapts to the arc of the buccal mucosa inside the oral cavity enables the buccal shield and tongue guard to better fit the oral mucosa, forming a relatively sealed space. During orthodontic treatment, this sealed space can effectively block the entry of saliva and other liquids, improving the moisture-proof effect. This fitted shape can maintain a relatively stable moisture-proof environment during oral activities. Reduce damage to the oral mucosa and other tissues. Because it perfectly fits the arc of the oral mucosa, the buccal shield and tongue guard will not appear abrupt in the mouth, reducing the patient's foreign body sensation.

[0020] Furthermore, the distance between the inner arm of the connector and the outer arm of the connector is 8mm-10mm, which helps to improve the precise positioning effect of the bracket positioning guide. This distance range enables the retainer to better play its positioning function. If the distance is too close, the structure between the retainers may be too compact, and positioning deviation is likely to occur when the bracket positioning guide is placed on the buccal and lingual surfaces of the teeth, because the smaller spacing may not be able to adapt well to the irregular shape of the tooth surface and different dental arch forms. The distance of 8mm-10mm can provide the retainer with appropriate stretching space, so that the bracket positioning guide can fit the tooth surface more accurately, thereby accurately locating the position of the bracket, which helps the accuracy of bracket bonding during orthodontic treatment. For the buccal shield and tongue stopper, the appropriate distance between the inner arm and the outer arm of the connector is conducive to enhancing the moisture isolation function. When the distance is 8mm-10mm, the buccal shield and tongue stopper can form a relatively closed space in the oral cavity, effectively preventing saliva and other liquids in the oral cavity from contacting the bracket positioning area. Compared with the situation of inappropriate distance, this distance range can better adjust the position of the cheek shield and tongue guard, making them fit more closely with the teeth, gums and other tissues, reducing the possibility of liquid penetration, thereby providing a dry environment for the bonding of the bracket, improving the bonding strength of the bonding material, and ultimately improving the quality of orthodontic treatment. From the perspective of the stability of the device, this distance is conducive to maintaining the overall structural stability of the bracket positioning moisture-proof device. When the distance between the inner arm and the outer arm is 8mm-10mm, it can provide a better mechanical support structure for the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the bracket positioning moisture-isolating device of the present invention when used in a mouth.

[0023] Figure 2It is a schematic structural diagram of the bracket positioning moisture-proof device of the present invention.

[0024] Figure 3 It is a coronal schematic diagram of the present invention.

[0025] Figure 4 It is a schematic diagram of the cheek screen of the present invention.

[0026] Figure 5 It is a schematic diagram of the tongue stopper of the present invention.

[0027] Among them: 1- bracket positioning guide, 2- retainer inner arm, 3- retainer middle arm, 301- spiral opener, 4- retainer outer arm, 5- cheek shield, 6- tongue stopper. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions 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. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does 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. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] In addition, if the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings: Combination Figures 1 to 5 The present invention proposes a bracket positioning and moisture-proof device based on 3D printing, comprising a bracket positioning guide plate 1, the bracket positioning guide plate 1 being located on the buccal and lingual surfaces; retainers for accurately positioning the bracket positioning guide plate 1 are provided on both sides of the bracket positioning guide plate 1, and a cheek shield 5 and a tongue stopper 6 are provided on the two retainers respectively. The height of the cheek shield 5 is level with the height of the occlusal surface of the posterior teeth. The tongue stopper 6 is adapted to the arc shape of the side edge of the tongue body to protect the tongue body from scratches.

[0035] The retainer includes a retainer inner arm 2, a retainer middle arm 3 and a retainer outer arm 4; the two ends of the retainer middle arm 3 are connected to the retainer inner arm 2 and the retainer outer arm 4 respectively. The distance between the connector inner arm 2 and the connector outer arm 4 is 8mm~10mm, and the distance between the connector inner arm and the connector outer arm is 8mm-10mm, which helps to improve the precise positioning effect of the bracket positioning guide. This distance range enables the retainer to better play its positioning function. If the distance is too close, the structure between the retainers may be too compact, and when the bracket positioning guide is placed on the buccal and lingual surface of the teeth, positioning deviation is likely to occur, because the smaller spacing may not be well adapted to the irregular shape of the tooth surface and different dental arch forms. The distance of 8mm-10mm can provide the retainer with appropriate stretching space, so that the bracket positioning guide can fit the tooth surface more accurately, thereby accurately locating the position of the bracket, which helps the accuracy of bracket bonding during orthodontic treatment. For cheek screens and tongue stops, a suitable distance between the connector inner arm and the outer arm is conducive to enhancing the moisture isolation function. When the distance is between 8mm and 10mm, the cheek shield and tongue stopper can form a relatively closed space in the oral cavity, effectively preventing saliva and other liquids in the oral cavity from contacting the bracket positioning area. Compared with the case of inappropriate distance, this distance range can better adjust the position of the cheek shield and tongue stopper, making them fit more closely with the teeth, gums and other tissues, reducing the possibility of liquid penetration, thereby providing a dry environment for the bonding of the bracket, improving the bonding strength of the bonding material, and ultimately improving the quality of orthodontic treatment. From the perspective of the stability of the device, this distance is conducive to maintaining the overall structural stability of the bracket positioning moisture-proof device. When the distance between the inner arm and the outer arm is 8mm to 10mm, it can provide a better mechanical support structure for the device.

[0036] A screw opener 301 is provided on the retainer middle arm 3. The retainer area varies in size according to the number of teeth to be protected from moisture. The screw opener is installed on the connector middle arm, and its adjustment function can change the distance between the mesiodistal arms, thereby affecting the tightness of the entire retainer structure, so as to better adapt to different tooth morphologies and correction requirements.

[0037] The bracket positioning guide plate 1, the retainer inner arm 2, the retainer middle arm 3, the spiral opener 301, the retainer outer arm 4, the cheek shield 5 and the tongue guard 6 are all made of flexible renewable biodegradable materials. Compared with traditional plastic or metal materials, flexible renewable biodegradable materials have less impact on the environment during the production process. When used in the oral cavity, the flexible material can better fit the teeth and oral tissues, and will not cause excessive pressure and friction on the oral mucosa during wearing, reducing the probability of adverse reactions such as oral ulcers. This material usually has a certain elasticity, can adapt to slight changes in the oral cavity, maintain a good fit, ensure the treatment effect, and is unlikely to cause allergic reactions or other adverse reactions when in contact with saliva and oral mucosa in the oral environment.

[0038] The two retainers are symmetrically arranged. The shape of the cheek shield 5 and the shape of the tongue stopper 6 are both adapted to the arc of the buccal mucosa inside the oral cavity. The cheek shield 5 and the tongue stopper 6 are both arc-shaped structures, and the shape adapted to the arc of the buccal mucosa inside the oral cavity enables the cheek shield and the tongue stopper to better fit the oral mucosa to form a relatively sealed space. During orthodontic treatment, this sealed space can effectively block the entry of saliva and other liquids and improve the moisture-proof effect. This fitted shape can maintain a relatively stable moisture-proof environment during oral activities. Reduce damage to the oral mucosa and other tissues. Due to the perfect fit with the arc of the oral mucosa, the cheek shield and the tongue stopper will not appear abrupt in the oral cavity, reducing the patient's foreign body sensation.

[0039] During the specific implementation of the present invention, the doctor places the bracket positioning guide 1 on the tooth. At this time, the outer side of the buccal shield 5 is in contact with the buccal mucosa, the tongue stop 6 wraps around the side edge of the tongue, and the symmetrically arranged retainer middle arm 3 and the spiral opener 301 are placed on the buccal and lingual sides of the tooth. The doctor can adjust the degree of stretching of the buccal mucosa and the tongue according to the need for moisture isolation. At the same time, cotton balls can be placed in the symmetrically arranged retainer inner arm 2, the retainer middle arm 3 and the retainer outer arm 4 and on both sides of the tooth. After achieving a better moisture isolation effect, the bracket can be bonded to the buccal surface of the tooth and the lingual buckle can be bonded to the lingual surface of the tooth with the assistance of the positioning guide.

[0040] The present invention provides a method for manufacturing a bracket positioning moisture-isolating device based on 3D printing, comprising: Obtain the three-dimensional digital intraoral scan results of the target patient; Establishing the oral model of the target patient according to the three-dimensional digital intraoral scanning results of the target patient; Determine the positions of the bracket positioning guide, retainer, buccal shield and tongue stop in the target patient's oral model; According to the bracket positioning guide, retainer, buccal shield, tongue stopper position and the target patient's oral model, three-dimensional data is obtained; The three-dimensional data is imported into a 3D printer for printing to obtain a bracket positioning moisture-proof device.

[0041] The operation steps of the bracket positioning moisture-isolating device based on 3D printing of the present invention are as follows: 1) Perform a three-dimensional digital intraoral scan of the patient's dentition, gums, buccal mucosa, lingual margins and other tissues to obtain accurate data. During the scanning process, the scanner projects a light source onto the patient's intraoral tissues and generates point cloud data through software processing, thereby creating a 3D visualization of the tissues.

[0042] 2) Export the scanned 3D model data into a format suitable for 3D printers, such as STL, OBJ, etc. Use professional design software to further optimize and adjust the 3D model as needed.

[0043] 3) Use oral CAD / CAM software and orthodontic bracket / accessory database to design and accurately position brackets, and use design software to personalize the 3D model according to the patient's specific situation and treatment needs. This may involve modifying the shape, size, and position of the tongue guard, cheek shield, and spiral opener to ensure that the final device can perfectly fit the patient's mouth. 3D printing is used to produce personalized models.

[0044] 4) Make orthodontic indirect bonding guides, tongue stops, cheek guards, connectors, and screw openers on the personalized model, and complete the intraoral trial fitting.

[0045] 5) Clean, etch, blow dry, apply adhesive and cure the enamel surface to which the bracket or accessory is to be bonded; 6) Bring the orthodontic bracket indirect guide with brackets / accessories into the entrance, use the buccal guard to open the cheeks, use the tongue stopper to block the tongue, place cotton balls in the buccal and lingual retainers of the tooth, and complete the bonding of the orthodontic brackets / accessories according to the conventional indirect bonding steps.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bracket positioning and moisture-proof device based on 3D printing, characterized in that: It comprises a bracket positioning guide plate (1), wherein the bracket positioning guide plate (1) is located on the buccal and lingual surface; Retaining bodies for accurately positioning the bracket positioning guide plate (1) are provided on both sides of the bracket positioning guide plate (1), and cheek guards (5) and tongue stops (6) are provided on the two retaining bodies respectively.

2. The bracket positioning and moisture-proofing device based on 3D printing according to claim 1, characterized in that: The retainer comprises a retainer inner arm (2), a retainer middle arm (3) and a retainer outer arm (4); Two ends of the retainer middle arm (3) are respectively connected to the retainer inner arm (2) and the retainer outer arm (4).

3. The bracket positioning and moisture-proofing device based on 3D printing according to claim 2, characterized in that: The distance between the inner arm (2) of the connector and the outer arm (4) of the connector is 8 mm to 10 mm.

4. The bracket positioning and moisture-proofing device based on 3D printing according to claim 2, characterized in that: A screw opener (301) is provided on the retainer middle arm (3).

5. The bracket positioning and moisture-proofing device based on 3D printing according to claim 4, characterized in that: The bracket positioning guide plate (1), the retainer inner arm (2), the retainer middle arm (3), the spiral opener (301), the retainer outer arm (4), the cheek shield (5) and the tongue stopper (6) are all made of flexible renewable biodegradable materials.

6. The bracket positioning and moisture-proofing device based on 3D printing according to claim 2, characterized in that: The retainer inner arm (2), the retainer middle arm (3) and the retainer outer arm (4) are on the same plane and are parallel to the mesiodistal direction of the tooth.

7. The bracket positioning and moisture-proofing device based on 3D printing according to claim 1, characterized in that: The two retainers are symmetrically arranged.

8. The bracket positioning and moisture-proofing device based on 3D printing according to claim 1, characterized in that: The shape of the cheek shield (5) and the shape of the tongue stopper (6) are both adapted to the arc shape of the buccal mucosa inside the oral cavity.

9. The bracket positioning and moisture-proofing device based on 3D printing according to claim 8, characterized in that: The cheek shield (5) and the tongue stopper (6) are both arc-shaped structures.

10. A method for manufacturing a bracket positioning moisture-proof device based on 3D printing, characterized in that: The bracket positioning and moisture-proofing device based on 3D printing according to any one of claims 1 to 9 comprises: Obtain the three-dimensional digital intraoral scan results of the target patient; Establishing the oral model of the target patient according to the three-dimensional digital intraoral scanning results of the target patient; Determine the positions of the bracket positioning guide, retainer, buccal shield and tongue stop in the target patient's oral model; According to the bracket positioning guide, retainer, buccal shield, tongue stopper position and the target patient's oral model, three-dimensional data is obtained; The three-dimensional data is imported into a 3D printer for printing to obtain a bracket positioning moisture-proof device.

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