Orthodontic appliance and method of manufacturing the same

Abstract

The present invention relates to an orthodontic appliance and a method for manufacturing the same. The orthodontic appliance comprises a shell, a covering layer and an additional component; the shell has a plurality of cavities, adjacent cavities are connected, and the cavities are used to accommodate the patient's teeth; the shell has an inner surface and an outer surface, and the inner surface is used to fit the patient's teeth; the edge of the covering layer is fixedly connected to the outer surface, and an opening is formed between the covering layer and the outer surface; the additional component is inserted between the covering layer and the outer surface through the opening. In the above-mentioned orthodontic appliance and method for manufacturing the same, the additional component can move in the area between the covering layer and the outer surface, and the position, direction, etc. of the additional component can be adjusted according to actual clinical needs, and is convenient for clinicians to adjust.

Description

Technical Field

[0001] The present invention relates to the technical field of dental orthodontics, and in particular to an appliance and a manufacturing method thereof. Background Art

[0002] Invisible braces are becoming more and more popular due to their beauty, convenience and other advantages. In order to achieve the desired correction effect, it is sometimes necessary to use additional components such as traction hooks and lingual buckles to improve the correction force of the braces. Generally, the additional components are pre-designed before correction and have been manufactured during the braces processing. In the specific use process, the doctor sticks the additional components on the surface of the teeth, and the corresponding position of the braces is provided with a groove corresponding to the additional component, so that during clinical use, the additional components cannot be adjusted according to changes in clinical conditions unless the braces are reprocessed. Summary of the invention

[0003] Based on this, it is necessary to provide a brace and a method for manufacturing the brace to address the problem that accessories and the like cannot be adjusted.

[0004] An orthodontic appliance, comprising:

[0005] A shell, wherein the shell has a plurality of cavities, adjacent cavities are connected, and the cavities are used to accommodate the patient's teeth; the shell has an inner surface and an outer surface, and the inner surface is used to fit the patient's teeth;

[0006] a covering layer, wherein an edge of the covering layer is fixedly connected to the outer surface and an opening is formed between the covering layer and the outer surface; and

[0007] An additional component is inserted through the opening and disposed between the cover layer and the outer surface.

[0008] The above-mentioned orthodontic appliance has a shell with multiple cavities, adjacent cavities are connected, the cavities are used to accommodate the patient's teeth, the shell has an inner surface and an outer surface, the inner surface is used to fit the patient's teeth, the edge of the covering layer is fixedly connected to the outer surface, and an opening is formed between the covering layer and the outer surface, so that additional components can be inserted between the covering layer and the outer surface through the opening, and then the additional components can move in the area between the covering layer and the outer surface, and the position, direction, etc. of the additional components can be adjusted according to actual clinical needs, and it is convenient for clinicians to adjust.

[0009] In one embodiment, the elastic modulus of the material used for the covering layer is smaller than the elastic modulus of the material used for the shell.

[0010] The elastic modulus of the material used for the covering layer is smaller than that of the material used for the shell, so that the covering layer can adhere to the external surface by relying on its own elasticity, thereby increasing the connection between the covering layer and the external surface and also increasing the comfort.

[0011] In one embodiment, the edge of the covering layer is bonded to the outer surface by an adhesive, or the edge of the covering layer is bonded to the outer surface by thermal bonding.

[0012] Adhesive bonding or thermal bonding is used to increase the bonding force between the edge and the outer surface of the covering layer and simplify the manufacturing process.

[0013] In one embodiment, the additional component is a traction hook, a tongue side buckle, a flat guide attachment, a jaw pad attachment, a steel wire, an elastic member or an electronic component; the electronic component is used to monitor the wearing condition.

[0014] In one of the embodiments, the area formed between the cover layer and the outer surface is adapted to fit the additional component.

[0015] The area formed between the covering layer and the external surface is adapted to the additional component, so that the additional component is more closely fitted to the external surface, while minimizing the area of ​​the covering layer and improving comfort.

[0016] In one embodiment, the area formed between the covering layer and the external surface is larger than the size of the additional component; after the additional component is inserted into the area formed between the covering layer and the external surface, the area formed between the covering layer and the external surface is divided into a first part and a second part; the size of the second part is adapted to the size of the additional component.

[0017] The area formed between the covering layer and the external surface is larger than the size of the additional component, so that the additional component can be easily inserted into the area. After the additional component is inserted into the area, the area formed between the covering layer and the external surface includes a first part and a second part, and the size of the second part is adapted to the size of the additional component, so that the additional component can be easily installed and is not easy to fall off.

[0018] In one embodiment, the covering layer covers the entire outer surface, or the covering layer covers a partial area of ​​the outer surface.

[0019] In one embodiment, there are multiple covering layers, and the multiple covering layers are arranged at intervals.

[0020] In one embodiment, an adhesive layer is provided between the cover layer and the additional component and / or between the outer surface and the additional component.

[0021] By setting the adhesive layer, the additional components are made more secure and not easy to fall off.

[0022] In one embodiment, the thickness of the covering layer is 0.1 mm-0.3 mm.

[0023] The thickness of the covering layer is 0.1 mm to 0.3 mm. The thickness of the covering layer is relatively thin, so that the covering layer fits the additional component more closely, further making the additional component less likely to fall off.

[0024] A method for manufacturing the above-mentioned orthodontic appliance comprises the following steps:

[0025] forming a covering layer on an outer surface of the shell, such that an edge of the covering layer is fixedly connected to the outer surface and an opening is formed between the covering layer and the outer surface;

[0026] The additional component is inserted between the cover layer and the outer surface through the opening.

[0027] The manufacturing method of the above-mentioned orthodontic appliance is simple, and the position and direction of the additional components can be adjusted according to actual clinical needs, and it is convenient for clinicians to make adjustments.

[0028] In one of the embodiments, the method further comprises the step of bonding the portion of the covering layer corresponding to the contour of the additional component to the outer surface by thermal bonding.

[0029] The portion of the covering layer corresponding to the contour of the additional component is bonded and connected to the outer surface by means of thermal bonding, so as to further prevent the additional component from shifting or falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of the orthodontic appliance of the first embodiment;

[0031] Figure 2 It is a schematic diagram of the structure of the orthodontic appliance of the second embodiment when no additional components are placed;

[0032] Figure 3 for Figure 2 A schematic diagram of the structure of the appliance shown in FIG. 1 after additional components are placed;

[0033] Figure 4 It is a schematic diagram of the structure of the orthodontic appliance of the third embodiment when no additional components are placed;

[0034] Figure 5 for Figure 3 A schematic diagram of the structure of the appliance shown in FIG. 1 after additional components are placed;

[0035] Figure 6 is a schematic structural diagram of a corrective appliance according to a fourth embodiment;

[0036] Figure 7 Schematic diagram of the structure of the orthodontic appliance of the fifth embodiment. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0038] like Figure 1 As shown, the braces 100 of the first embodiment includes a shell 110, a covering layer 120 and additional components (not shown). The shell 110 has a plurality of cavities, adjacent cavities are connected, and the cavities are used to accommodate the patient's teeth. The shell 110 has an inner surface and an outer surface 111, and the inner surface is used to fit the patient's teeth. That is to say, when the braces 100 is in use, the braces 100 is matched on the patient's teeth, and the inner surface fits the patient's teeth, so that the braces 100 exerts force on the patient's teeth to achieve correction of the teeth. It should be noted that the material used for the shell 110 can be PETG, PET or TPU, etc. The shell 110 can be made by 3D printing and the like, and the preparation method of the shell 110 is not limited here.

[0039] The edge of the covering layer 120 is fixedly connected to the external surface 111, and an opening is formed between the covering layer 120 and the external surface 111, that is, most of the edge of the covering layer 120 is fixedly connected to the external surface 111, that is, part of the edge of the covering layer 120 is not fixedly connected to the external surface 111, so that an opening 112 is formed between the covering layer 120 and the external surface 111. Therefore, the additional component can be inserted between the covering layer 120 and the external surface 111 through the opening 112. Then, the additional component can move in the area between the covering layer 120 and the external surface 111, and the position, direction, thickness, etc. of the additional component can be adjusted according to actual clinical needs, and it is convenient for clinicians to adjust, which makes it more convenient for doctors, and the comfort can be increased by adjusting the position of the additional component.

[0040] In addition, the additional components do not need to be directly attached to the tooth surface, so the additional components will not directly apply force to the appliance 100, and will not cause the teeth to move in other directions. The production of additional components such as lingual buckles and traction hooks will not reduce the wrapping of the appliance 100 on the teeth. In other words, the additional components such as lingual buckles and traction hooks are arranged on the external surface 111, which does not affect the fit of the internal surface to the teeth and will not reduce the wrapping of the teeth.

[0041] It should be noted that the material used for the covering layer 120 may be TPU, PET, PETG, etc. In addition, the material used for the covering layer 120 may be the same as the material used for the housing 110 or may be different.

[0042] In one embodiment, the elastic modulus of the material used for the covering layer 120 is smaller than the elastic modulus of the material used for the shell 110, that is, the elasticity of the covering layer 120 is better than the elasticity of the shell 110. Therefore, when the edge of the covering layer 120 is fixedly connected to the external surface 111, the covering layer 120 can be attached to the external surface 111 by its own elasticity, thereby increasing the connection between the covering layer 120 and the external surface 111 and increasing the wearing comfort of the patient. For example, the material used for the covering layer 120 can be TPU, and the material used for the shell 110 can be PETG.

[0043] In one embodiment, the edge of the covering layer 120 can be connected to the external surface 111 by adhesive bonding, and the adhesive can be glue, resin, etc. In other embodiments, the edge of the covering layer 120 can be connected to the external surface 111 by thermal bonding. Specifically, the edge of the covering layer 120 can be melted by local heating, and then the covering layer 120 is pasted on the external surface 111, so that the edge of the covering layer 120 is fixedly connected to the external surface 111. In addition, a partial area of ​​the external surface 111 can also be melted by local heating, and then the edge of the covering layer 120 is aligned with the area, so that the edge of the covering layer 120 is fixedly connected to the external surface 111. Adhesive bonding or thermal bonding is used to increase the bonding force between the edge of the covering layer 120 and the external surface 111, and the manufacturing process is also simple. It should be noted that the connection position of the covering layer 120 and the external surface 111 can be determined according to the doctor.

[0044] It should be noted that the cover layer 120 and the housing 110 may also be integrally formed. The cover layer 120 and the housing 110 may be integrally formed by 3D printing or the like.

[0045] In one embodiment, the thickness of the cover layer 120 is thinner than that of the housing 110, so that when the additional component is inserted into the area formed by the cover layer 120 and the outer surface 111, the cover layer 120 is more likely to deform, so that the cover layer 120 can well fix the additional component in the area. Further, the thickness of the cover layer 120 can be 0.1 mm-0.3 mm.

[0046] In one embodiment, the area formed between the covering layer 120 and the external surface 111 is adapted to the additional component. In other words, the size of the area of ​​the covering layer 120 other than the area fixedly connected to the external surface 111 is adapted to the additional component, so that when the additional component is inserted into the area between the covering layer 120 and the external surface 111, the additional component can be well fitted with the covering layer 120 and the external surface 111, preventing the additional component from shifting, falling, etc. It should be noted that the area formed between the covering layer 120 and the external surface 111 can also be smaller than the size of the additional component. This is because the covering layer 120 has a certain elasticity. Therefore, when the additional component is inserted into the area between the covering layer 120 and the external surface 111, the elastic effect enables the additional component to still be inserted into the area, and can also better fix the additional component in the area, further preventing the additional component from falling, etc.

[0047] In one embodiment, an adhesive layer may be provided between the cover layer 120 and the additional component, so that the adhesion between the cover layer 120 and the additional component is higher, so that the additional component can be better fixed in the area, and the additional component can be further prevented from falling off. It should be noted that the adhesive layer may also be provided between the additional component and the external surface 111, so that the additional component is fixed more securely. In addition, an adhesive layer may be provided between the cover layer 120 and the additional component and between the external surface 111 and the additional surface.

[0048] In other embodiments, the area formed between the cover layer 120 and the external surface 111 includes a first part and a second part. The size of the second part is adapted to the size of the additional component. In other words, the area formed between the cover layer 120 and the external surface 111 is larger than the size of the additional component, so that the additional component can be easily inserted into the area. Since the area is relatively large, it is easy to change the position of the additional component, and it also affects the fit of the additional component with the external surface 111. Therefore, after the additional component is inserted into the area, the area can be divided into a first part and a second part by means of thermal bonding, and the size of the second part is adapted to the size of the additional part. In other words, the portion of the cover layer 120 corresponding to the contour of the additional component can be bonded to the external surface 111 by means of thermal bonding, that is, the area is divided into a first part and a second part. At this time, the additional component is not easy to fall off, and the additional component is more fitted to the external surface 111.

[0049] Among them, an adhesive layer may be provided between the cover layer 120 and the additional component, so that the adhesion between the cover layer 120 and the additional component is higher, so that the additional component can be better fixed in the area, and the additional component can be further prevented from falling off. It should be noted that the adhesive layer can also be provided between the additional component and the external surface 111, so that the additional component is fixed more securely. In addition, an adhesive layer may be provided between the cover layer 120 and the additional component and between the external surface 111 and the additional surface.

[0050] In addition, when the area formed between the cover layer 120 and the external surface 111 is larger than the size of the additional component, a resin block can be pasted on the additional component and then the additional component can be inserted into the area formed between the cover layer 120 and the external surface 111. The resin block can fill the partial area not occupied by the additional component, thereby making the additional component more stable in the area.

[0051] In one embodiment, the covering layer 120 covers a partial area of ​​the external surface 111. Specifically, according to the doctor's or the mark on the shell 110, the covering layer 120 covers the area on the external surface 111 corresponding to the location where the additional component is added. Since the covering layer 120 only covers a partial area of ​​the external surface 111, the wearing comfort of the patient is improved and materials are saved. Among them, the mark on the shell 110 refers to the area where the additional component needs to be added that is automatically marked on the shell 110 when the corrector 100 is 3D printed. The length can cover one tooth surface or several tooth surfaces, and the shape can be rectangular, circular or irregular. The direction of the opening is determined according to the usage.

[0052] In other embodiments, the covering layer 120 may cover the entire outer surface 111. In this case, the opening formed between the covering layer 120 and the outer surface 111 may be formed by cutting a slit at a location where the additional component needs to be installed by a cutter or the like, and the additional component is then inserted between the covering layer 120 and the outer surface 111 through the slit. When the covering layer 120 covers the entire outer surface 111, the orthodontic appliance 100 may also be manufactured by bonding with an adhesive or the like or by 3D printing or the like.

[0053] In one embodiment, there are multiple covering layers 120, and the multiple covering layers 120 are arranged at intervals. It is understandable that when a patient needs multiple additional components at a certain correction stage, such as a traction hook and a lingual buckle at the same time, at this time, the covering layer 120 can be fixedly connected at the corresponding position of the external surface 111 by thermal bonding, and then the traction hook and the lingual buckle are respectively inserted into the area formed by the external surface 111 and the corresponding covering layer 120 through the opening. In addition, two or more traction hooks or lingual buckles may be required at a certain correction stage, and the covering layer 120 can be formed according to actual needs.

[0054] It should be noted that when the covering layer 120 covers the entire outer surface 111 , there may be two or more covering layers 120 , and the two or more covering layers 120 are stacked in sequence.

[0055] In addition, the additional component may be a traction hook, a lingual buckle, a flat guide attachment, a jaw pad attachment, a steel wire, an elastic member or an electronic component. The electronic component is used to monitor the wearing condition. The electronic component may be a force sensor or a camera. It should be noted that the additional component may also be a resin block, etc., as long as it is an auxiliary tool required for the correction process, and there is no limitation here. In this embodiment, the additional component is a traction hook or a lingual buckle.

[0056] When the additional component is a traction hook, according to the traditional method, the traction hook needs to be directly pasted on the tooth surface. After pasting on the tooth surface, it is fixed and cannot be moved unless it is removed and pasted again. In addition, a certain degree of damage will be caused to the tooth surface. As the teeth move, the initial pasting position of the traction hook will change, and inappropriate situations will occur, such as the direction of force application or mucosal compression. In addition, the traction hook will also reduce the wrapping of the shell 110 of the orthodontic appliance 100 on the tooth surface. Moreover, the position of the orthodontic appliance corresponding to the position of the traction hook is relatively short (that is, there is a corresponding gap at this position of the orthodontic appliance), which is easy to break. Since the traction hook is pasted on the tooth surface, there is a risk of the traction hook falling off as the teeth move. In addition, when the traction hook is pulled, the force generated by it is directly transmitted to the teeth, which may cause the teeth to move in an unplanned direction. With the braces of the above structure, the traction hook can move in the area between the cover layer 120 and the outer surface 111. The position, direction, thickness, etc. of the traction hook can be adjusted according to actual clinical needs, and it is easy for clinicians to adjust, making it more convenient for doctors, and the comfort can be increased by adjusting the position of the traction hook. In addition, the traction hook does not need to be directly attached to the tooth surface, so the additional component traction hook will not directly apply force to the teeth and will not cause the teeth to move in other directions. The traction hook is arranged on the outer surface 111, which does not affect the fit of the inner surface to the teeth and does not reduce the wrapping of the teeth.

[0057] In addition, when the traction hook is set in a traditional way, it is necessary to form an incision on the shell of the orthodontic appliance so that the hook portion of the traction hook can be extended from the incision, and then a rubber band can be hung in to further increase the traction force. However, the pulling force of the rubber band is everted, which will cause discomfort to the mucosa and even ulcers. In addition, because the traction hook is a section of the orthodontic appliance, the pulling force may cause the traction hook to break and reduce the wrapping of the orthodontic appliance on the tooth surface. With the orthodontic appliance using the above structure, an opening is formed between the covering layer 120 and the outer surface 111, so that the hook portion of the traction hook is directly extended from the opening, and then a rubber band is hung in, which will not cause discomfort to the mucosa.

[0058] When the additional component is a lingual buckle, according to the traditional method, the lingual buckle needs to be directly pasted on the tooth surface. After pasting on the tooth surface, it is fixed and cannot be moved unless it is removed and pasted again. In addition, a certain degree of damage will be caused to the tooth surface. As the teeth move, the initial pasting position of the lingual buckle will change, resulting in inappropriate situations, such as the direction of force application or mucosal compression. In addition, the lingual buckle will also reduce the wrapping of the shell 110 of the orthodontic appliance 100 on the tooth surface. Moreover, the position of the orthodontic appliance corresponding to the position of the lingual buckle is relatively short (that is, there is a corresponding gap at this position of the orthodontic appliance), which is easy to break. Since the lingual buckle is pasted on the tooth surface, there is a risk of the lingual buckle falling off as the teeth move. In addition, when the lingual buckle is pulled, the force generated by it is directly transmitted to the teeth, which may cause the teeth to move in an unplanned direction. With the braces of the above structure, the lingual buckle can move in the area between the cover layer 120 and the outer surface 111. The position, direction, thickness, etc. of the lingual buckle can be adjusted according to actual clinical needs, and it is easy for clinicians to adjust, making it more convenient for doctors. The comfort can also be increased by adjusting the position of the lingual buckle. In addition, the lingual buckle does not need to be directly attached to the tooth surface, so the additional component lingual buckle will not directly apply force to the teeth and will not cause the teeth to move in other directions. The lingual buckle is arranged on the outer surface 111, which does not affect the fit of the inner surface to the teeth and does not reduce the wrapping of the teeth.

[0059] When the additional component is a lingual buckle, in one embodiment, a through hole is provided on the cover layer 120, and the diameter of the through hole is smaller than the diameter of the protruding portion of the lingual buckle, so that the elasticity of the cover layer 120 can be utilized, and the protruding portion of the lingual buckle can pass through the through hole, and then a rubber band or the like can be hung on the protruding portion, further improving the correction force. Furthermore, the opening formed between the cover layer 120 and the outer surface 111 can be sealed by means of adhesive or the like.

[0060] like Figure 2As shown, the braces 200 of the second embodiment includes a shell 210, a covering layer 220 and additional components (not shown). The structures of the various components in the braces 200 and the connection relationship between the various components are as shown in the first embodiment and will not be repeated here. The braces 200 is different from the braces 100 described in the first embodiment in that the additional components are flat guide attachments or flat guide cavities. At this time, the length of the covering layer 220 can cover several tooth surfaces on the lingual side. With traditional braces, the flat guide attachments are attached to the lingual surface of the teeth in the anterior teeth area and cannot be changed. As the teeth change, inappropriate situations may occur. As Figure 3 As shown, with the braces, the flat guide attachment is inserted into the area formed by the covering layer 220 and the outer surface 111, and can be adjusted according to actual conditions, etc., so as to ensure that the lower front teeth can be vertically stressed. When the additional component is a flat guide cavitation, the use of a traditional braces will reduce the braces' wrapping of the tooth surface. In addition, the flat guide cavitation is supported only by the force of the shell of the braces, and this force is smaller than the force of the bite, which will cause the flat guide cavitation to collapse, resulting in the inability to perform normal functions. With the above-mentioned braces, the flat guide cavitation is protected by the covering layer 220, which can avoid the collapse of the flat guide cavitation, and will not reduce the braces' wrapping of the tooth surface.

[0061] like Figure 4 As shown, the braces 300 of the second embodiment includes a shell 310, a covering layer 320 and additional components (not shown). The structures of the various components in the braces 300 and the connection relationship between the various components are as shown in the first embodiment, and are not repeated here. The braces 300 is different from the braces 100 described in the first embodiment in that the additional component is a jaw pad accessory. In this case, the length of the covering layer 220 can cover several tooth surfaces. The jaw pad accessory is placed on the occlusal surface of the posterior tooth area, and the jaw pad accessory is inserted in the area formed by the covering layer 220 and the external surface 111, as shown Figure 5 As shown. The position of the jaw pad attachment can be adjusted. In addition, the height of the jaw pad attachment can also be adjusted. Specifically, the number of jaw pad attachments can be multiple, and the multiple jaw pad attachments are detachably connected, and the multiple jaw pad attachments are stacked in sequence. According to actual needs, the jaw pad attachment can be extracted to meet clinical needs. For example, in the initial correction stage, the height of the jaw pad attachment needs to be higher. In the next stage, the height can be changed by extracting the jaw pad attachment according to the actual correction situation.

[0062] In one embodiment, there may be multiple covering layers 320, and the multiple covering layers 320 are stacked in sequence. The edges of adjacent covering layers 320 are fixedly connected, and a layer opening is formed between adjacent covering layers 320. The number of covering layers 320 may be the same as the number of jaw pad accessories, so that each jaw pad accessory is inserted in the area formed between adjacent covering layers 320 or the area formed between the covering layer 320 closest to the outer surface 111 and the outer surface 111, so that the jaw pad accessories will not affect each other when being taken.

[0063] like Figure 6 As shown, the orthodontic appliance 400 of the fourth embodiment includes a shell 410, a covering layer 420 and an additional component 430. The structures of the various components in the orthodontic appliance 400 and the connection relationship between the various components are as shown in the first embodiment, and are not repeated here. The orthodontic appliance 400 is different from the orthodontic appliance 100 described in the first embodiment in that the additional component 430 is an elastic steel wire or rubber band, and the number of covering layers 420 is two. The two covering layers 420 are respectively opposite to the openings formed by the external surface 411. Thereby, the two ends of the elastic steel wire or rubber band are respectively inserted into the areas formed by the two covering layers 420 and the external surface 411.

[0064] In one embodiment, a fixing component may be provided in the area formed by the covering layer 420 and the external surface 411, and the fixing component is used for the end of the elastic steel wire or rubber band. It should be noted that the fixing component may also be first fixedly connected with the end of the elastic steel wire or rubber band, and then an adhesive may be spin-coated on the fixing component, so that the fixing component is fixed in the area formed by the covering layer 420 and the external surface 411. In addition, the fixing component may also be first fixedly connected with the end of the elastic steel wire, spring or rubber band, and then the fixing component is inserted in the area formed by the covering layer 420 and the external surface 411, and finally the covering layer 420 and the area corresponding to the contour of the fixing component are fixedly connected to the external surface 411 by thermal bonding along the contour of the fixing component.

[0065] It should be noted that when the gap between teeth needs to be closed, an elastic wire, spring or rubber band is used, and when the gap between teeth needs to be expanded, an elastic wire or spring is used.

[0066] like Figure 7As shown, the brace 500 of the fifth embodiment includes a shell 510, a covering layer 520 and additional components (not shown). The structures of the various components in the brace 500 and the connection relationship between the various components are as shown in the fourth embodiment, and are not repeated here. The brace 500 is different from the brace 400 described in the fourth embodiment in that the number of the covering layer 520 is one, and the elastic steel wire or rubber band is inserted into the area formed by the covering layer 520 and the outer surface 511. The covering layer 520 covers the gaps between the patient's teeth.

[0067] An embodiment of a method for manufacturing a brace appliance according to any of the above embodiments comprises the following steps:

[0068] S1: forming a covering layer on the outer surface of the shell, so that an edge of the covering layer is fixedly connected to the outer surface and an opening is formed between the covering layer and the outer surface.

[0069] Specifically, the edge of the covering layer can be connected to the external surface by bonding with an adhesive, and the adhesive can be glue or resin. In other embodiments, the edge of the covering layer can be connected to the external surface by thermal bonding. Specifically, the edge of the covering layer can be melted by local heating, and then the covering layer is pasted on the external surface, so that the edge of the covering layer is fixedly connected to the external surface. The shell can be made by 3D printing or the like. It should be noted that the covering layer and the shell can also be integrally formed. The covering layer and the shell can be integrally formed by 3D printing or the like.

[0070] S2: Insert the additional component between the cover layer and the external surface through the opening.

[0071] In particular, tweezers may be used to insert the additional component into the area between the cover layer and the outer surface.

[0072] The manufacturing method of the above-mentioned orthodontic appliance is simple, and the position and direction of the additional components can be adjusted according to actual clinical needs, and it is convenient for clinicians to make adjustments.

[0073] In one embodiment, after step S2, the method further includes bonding the portion of the covering layer corresponding to the contour of the additional component to the external surface by thermal bonding. The portion of the covering layer corresponding to the contour of the additional component to the external surface is bonded by thermal bonding to further prevent the additional component from shifting or falling off.

[0074] It should be noted that the orthodontic appliance manufactured by the manufacturing method is as described in any of the above embodiments and will not be described in detail here.

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A corrective appliance, characterized in that: include: A shell, wherein the shell has a plurality of cavities, adjacent cavities are connected, and the cavities are used to accommodate the patient's teeth; the shell has an inner surface and an outer surface, and the inner surface is used to fit the patient's teeth; a covering layer, wherein an edge of the covering layer is fixedly connected to the external surface, and an opening is formed between the covering layer and the external surface; the elastic modulus of the material used for the covering layer is smaller than the elastic modulus of the material used for the shell; as well as An additional component, the additional component is inserted through the opening between the covering layer and the external surface; the additional component is a traction hook, a lingual buckle, a flat guide accessory, and a jaw pad accessory; the area formed between the covering layer and the external surface is larger than the size of the additional component; after the additional component is inserted into the area formed between the covering layer and the external surface, the area formed between the covering layer and the external surface is divided into a first part and a second part; the size of the second part is adapted to the size of the additional component; When the edge of the covering layer is fixedly connected to the external surface, the covering layer can be attached to the external surface by its own elasticity, and the thickness of the covering layer is thinner than the thickness of the shell.

2. The appliance according to claim 1, characterized in that The edge of the covering layer is bonded to the outer surface by an adhesive, or the edge of the covering layer is bonded to the outer surface by thermal bonding.

3. The appliance according to claim 1, characterized in that The covering layer covers the entire outer surface, or the covering layer covers a partial area of ​​the outer surface.

4. The appliance according to claim 1, characterized in that There are multiple covering layers, and the multiple covering layers are arranged at intervals.

5. The appliance according to claim 1, characterized in that: An adhesive layer is provided between the cover layer and the additional component and / or between the outer surface and the additional component.

6. The appliance according to claim 1, characterized in that The thickness of the covering layer is 0.1 mm-0.3 mm.

7. A method for manufacturing a brace according to any one of claims 1 to 6, characterized in that: The steps include: forming a covering layer on an outer surface of the shell, such that an edge of the covering layer is fixedly connected to the outer surface and an opening is formed between the covering layer and the outer surface; The additional component is inserted between the cover layer and the outer surface through the opening.

8. The method for manufacturing a corrective appliance according to claim 7, characterized in that: The method further comprises the step of bonding and connecting the portion of the covering layer corresponding to the contour of the additional component to the outer surface by means of thermal bonding.

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