Attachment combination and shell-shaped dental instrument having same

Abstract

An attachment combination (100), configured to mutually fix with an orthodontic appliance (201). The attachment combination (100) comprises an attachment body (10)and a spacer (20), wherein the attachment body (10) comprises a connection portion, and a first end portion (12) and a second end portion (13), which are located on two opposite sides of the connection portion; and the spacer (20) and the second end portion (13) fit with each other, a gap (P) is formed between the spacer (20) and the first end portion (12), and the gap (P) and the orthodontic appliance (201) are mutually fixed. In the present application, the connection strength and connection reliability between the attachment combination (100) and the orthodontic appliance (201) can be enhanced, thus reducing the risk of the attachment combination (100) detaching. Further provided is a shell-shaped dental instrument.

Description

Accessory assembly and shell-shaped dental instrument having the same

[0001] This application claims priority to Chinese patent applications with application date of September 27, 2023, application number 202311273462.6, application name “Accessory combination and shell-shaped dental instrument having the same” and Chinese patent applications with application date of September 27, 2023, application number 202322654660.9, application name “Accessory combination and shell-shaped dental instrument having the same”, the entire contents of which are incorporated into this application by reference. Technical Field

[0002] The present application relates to the technical field of dental orthodontics, and in particular to an accessory assembly and a shell-shaped dental instrument having the same. Background Art

[0003] Shell-shaped dental appliances made of polymer materials are becoming increasingly popular due to their aesthetic, convenience, and ease of cleaning. Typically, orthodontic treatment using shell-shaped dental appliances requires a series of successive shell-shaped appliances, each of which houses the tooth, with the geometry of the cavity substantially matching the desired tooth configuration for the corresponding treatment step.

[0004] In many cases, it is difficult to ensure that a corrective force system of appropriate size and direction is applied to the teeth by relying solely on shell-shaped dental devices. For example, in order to achieve functions such as traction, guiding the mandible forward, and opening the bite, current shell-shaped dental devices include an appliance that accommodates the teeth and accessories attached to the appliance. However, the connection strength between the accessories and the appliance is limited. During clinical use, the risk of the accessories falling off is relatively high. Summary of the Invention

[0005] The purpose of the present application is to provide an accessory assembly and a shell-shaped dental instrument having the same, which can enhance the connection strength and connection reliability between the accessory assembly and the orthodontic appliance, thereby reducing the risk of the accessory assembly falling off.

[0006] In order to achieve one of the above-mentioned application purposes, one embodiment of the present application provides an accessory combination for being fixed to the orthodontic appliance, the accessory combination including an accessory body and a gasket, the accessory body including a connecting portion and a first end and a second end located on opposite sides of the connecting portion, the gasket and the second end cooperate with each other, and a gap is formed between the gasket and the first end, and the gap is fixed to the orthodontic appliance.

[0007] As a further improvement of an embodiment of the present application, the gasket includes a through hole, and the second end portion passes through the through hole and cooperates with the gasket.

[0008] As a further improvement of one embodiment of the present application, the through hole is a circular hole, the second end is a cylinder, a cone or a prism protruding from the connecting part, and the maximum distance formed by two points on the lower bottom surface contour of the cylinder, cone or prism is greater than the diameter of the through hole in the initial state.

[0009] As a further improvement of one embodiment of the present application, the gasket includes a hollow gasket body and a plurality of blocking parts connected to the inner edge of the gasket body and distributed at intervals, and side holes are formed between adjacent blocking parts. The side holes are located at the periphery of the through hole and connected to the through hole.

[0010] As a further improvement of one embodiment of the present application, the gasket body and the blocking portion both extend horizontally, or the gasket body extends horizontally and the blocking portion is bent toward a side away from the first end portion, or the gasket body and the blocking portion both bend toward a side away from the first end portion.

[0011] As a further improvement of one embodiment of the present application, the accessory body also includes a limiting portion located on the outer surface of the connecting portion. When the accessory assembly is assembled to the orthodontic appliance, the limiting portion and the orthodontic appliance abut against each other to limit the rotation of the accessory body relative to the orthodontic appliance.

[0012] As a further improvement of an embodiment of the present application, the limiting portion is located in the gap, the limiting portion includes a plane, or the limiting portion includes a plurality of barbs distributed at intervals along the circumference of the connecting portion.

[0013] As a further improvement of an embodiment of the present application, the connecting portion is an integrated columnar structure, or the connecting portion includes a plurality of connecting columns arranged at intervals.

[0014] As a further improvement of an embodiment of the present application, the first end protrudes out of the connecting portion toward the circumference of the connecting portion, and the structure formed by the second end and the gasket protrudes out of the connecting portion toward the circumference of the connecting portion.

[0015] As a further improvement of one embodiment of the present application, the second end portion has a step surface protruding from the connecting portion in the circumferential direction of the connecting portion, and the step surface supports the gasket, or the second end portion has an interface, and the gasket and the interface are mutually engaged.

[0016] As a further improvement of an embodiment of the present application, the gasket has at least one first fitting portion on one side close to the first end portion. When the accessory assembly is assembled to the orthodontic appliance, the first fitting portion cooperates with the second fitting portion on the orthodontic appliance to limit the rotation of the gasket relative to the orthodontic appliance.

[0017] As a further improvement of an embodiment of the present application, the accessory assembly further includes a functional portion, and the functional portion is integrally formed with the first end portion, or the functional portion is detachably connected to the first end portion.

[0018] As a further improvement of one embodiment of the present application, the functional part is located on the side of the first end away from the second end, and the functional part is a hook-shaped structure, a jaw pad structure, a tubular structure, a groove structure, a ring structure, a tongue thorn structure, a tongue position guide structure, an indicator, a detector or a releaser.

[0019] As a further improvement of one embodiment of the present application, the functional part is a hook-shaped structure, the first end includes a mounting surface away from the second end, the hook-shaped structure is located on the mounting surface, and a gap is formed between the hook-shaped structure and the mounting surface for the traction member to enter and exit.

[0020] As a further improvement of an embodiment of the present application, the accessory combination includes two accessory bodies and two gaskets, the two first ends are connected to each other, the two second ends are separated from each other, and the two gaskets respectively cooperate with the two second ends.

[0021] As a further improvement of an embodiment of the present application, the first end portion, the connecting portion and the second end portion are connected to form an integral structure independent of the gasket, the maximum distance formed by two points on the outer contour of the end surface of the first end portion is greater than the maximum distance formed by two points on the outer contour of the end surface of the second end portion, and the maximum distance formed by two points on the outer contour of the end surface of the gasket is greater than the maximum distance formed by two points on the outer contour of the end surface of the second end portion.

[0022] In order to achieve one of the above-mentioned application purposes, one embodiment of the present application provides a shell-shaped dental device, including an orthodontic appliance and the accessory combination as described above, the orthodontic appliance includes a cavity for accommodating teeth, an inner surface close to the cavity, and an outer surface away from the cavity, the orthodontic appliance also includes a mounting hole passing through the inner surface and the outer surface, when the accessory combination is assembled to the orthodontic appliance, the accessory body passes through the mounting hole and the gap clamps the peripheral area of ​​the mounting hole.

[0023] As a further improvement of an embodiment of the present application, the gasket is completely located on one side of the inner surface.

[0024] As a further improvement of an embodiment of the present application, the orthodontic device also includes a mounting platform protruding toward a side away from the cavity, the mounting platform includes a first mounting surface located on the outer surface and a second mounting surface located on the inner surface, and the mounting hole passes through the first mounting surface and the second mounting surface.

[0025] As a further improvement of one embodiment of the present application, the second mounting surface is enclosed to form an accommodating cavity connecting the mounting hole and the cavity. When the accessory assembly is assembled to the orthodontic appliance, the gasket and the second end are both located in the accommodating cavity, or at least part of the gasket and the second end extend out of the accommodating cavity.

[0026] As a further improvement of an embodiment of the present application, the first mounting surface includes a first plane away from the cavity, the first plane is used to support the first end, and the second mounting surface includes a second plane close to the cavity, the second plane is used to support the gasket.

[0027] As a further improvement of an embodiment of the present application, the first end portion includes a first mating surface arranged facing the first plane, the first mating surface is a plane and abuts against the first plane, or the first mating surface is provided with a friction structure abutting against the first plane.

[0028] As a further improvement of one embodiment of the present application, the gasket includes a second mating surface facing the second plane, the second mating surface is a plane and abuts against the second plane, or the second mating surface is provided with a friction structure abutting against the second plane.

[0029] As a further improvement of an embodiment of the present application, the inner contour of the mounting hole matches the outer contour of the connecting portion, and the inner contour of the mounting hole is circular or non-circular.

[0030] As a further improvement of an embodiment of the present application, the mounting holes are arranged corresponding to the gaps between adjacent teeth.

[0031] As a further improvement of an embodiment of the present application, the shell-shaped dental appliance further includes a colloid located inside the accessory assembly or between the accessory assembly and the appliance.

[0032] Compared with the prior art, the beneficial effect of the present application is that: one embodiment of the present application achieves mutual fixation of the accessory assembly and the orthodontic appliance by clamping the orthodontic appliance through the cooperation of the accessory body and the gasket, which can enhance the connection strength and connection reliability between the accessory assembly and the orthodontic appliance, thereby reducing the risk of the accessory assembly falling off. Even if the accessory assembly fails due to excessive load in extreme cases, the accessory assembly will not fall off the orthodontic appliance, thereby avoiding the situation where the accessory assembly is swallowed by the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is an exploded schematic diagram of an accessory body according to an embodiment of the present application;

[0034] 2a to 2g are schematic diagrams of various forms of gaskets according to an embodiment of the present application;

[0035] FIG3 is a schematic diagram of a connecting portion according to an embodiment of the present application;

[0036] FIG4 is a cross-sectional view of a partial area of ​​an orthodontic appliance according to an embodiment of the present application;

[0037] FIG5 is a partial schematic diagram of a shell-shaped dental appliance according to an embodiment of the present application;

[0038] FIG6 is a cross-sectional view of FIG5;

[0039] FIG7 is a schematic diagram of a mounting platform according to an embodiment of the present application;

[0040] FIG8 is a schematic diagram of a mounting platform with runway-shaped mounting holes according to an embodiment of the present application;

[0041] FIG9 is a schematic diagram of an accessory body having a planar connecting portion according to an embodiment of the present application;

[0042] 10 and 11 are schematic diagrams of the accessory body of the first specific embodiment of the present application;

[0043] 12 and 13 are schematic diagrams of an accessory body according to a second specific embodiment of the present application;

[0044] 14 and 15 are schematic diagrams of an accessory body according to a third embodiment of the present application;

[0045] 16 and 17 are schematic diagrams of an accessory body according to a fourth embodiment of the present application;

[0046] 18 and 19 are schematic diagrams of an accessory body according to a fifth embodiment of the present application;

[0047] 20 to 23 are schematic diagrams of an accessory body and an accessory assembly according to a sixth specific embodiment of the present application;

[0048] 24 and 25 are schematic diagrams of an accessory body according to a seventh embodiment of the present application;

[0049] 26 to 29 are schematic diagrams of an accessory assembly according to an eighth embodiment of the present application;

[0050] 30 to 34 are schematic diagrams of an accessory assembly according to a ninth embodiment of the present application;

[0051] 35 to 38 are schematic diagrams of the accessory assembly of the tenth specific embodiment of the present application. DETAILED DESCRIPTION

[0052] The present application will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present application, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are included within the scope of protection of the present application.

[0053] In combination with Figures 1 to 7, an accessory assembly 100 of an embodiment of the present application and a shell-shaped dental appliance 200 having the accessory assembly 100 are illustrated. The accessory assembly 100 is used to be fixed to the orthodontic appliance 201. When the accessory assembly 100 is assembled to the orthodontic appliance 201, the shell-shaped dental appliance 200 is formed.

[0054] In this embodiment, the accessory assembly 100 includes an accessory body 10 and a gasket 20. The accessory body 10 includes a connecting portion 11 and a first end 12 and a second end 13 located on opposite sides of the connecting portion 11. The gasket 20 and the second end 13 cooperate with each other, and a gap P is formed between the gasket 20 and the first end 12. The gap P is fixed to the corrector 201.

[0055] Here, "the gap P and the corrector 201 are fixed to each other" means that the gasket 20, the first end portion 12 and the corrector 201 are fixed to each other through the cooperation of the gap P and the corrector 201. The accessory body 10 and the gasket 20 are two independent structures. When the gasket 20 is cooperated with the second end portion 13, a gap P is formed between the gasket 20 and the first end portion 12. When the gap P is cooperated with the corrector 201, the accessory assembly 100 and the corrector 201 are fixed to each other.

[0056] This embodiment achieves mutual fixation between the accessory assembly 100 and the appliance 201 by clamping the appliance 201 through the cooperation of the accessory body 10 and the gasket 20, which can enhance the connection strength and connection reliability between the accessory assembly 100 and the appliance 201, thereby reducing the risk of the accessory assembly 100 falling off. Even if the accessory assembly 100 fails due to excessive load in extreme cases, the accessory assembly 100 will not fall off the appliance 201, thereby avoiding the situation where the accessory assembly 100 is swallowed by the patient.

[0057] In this embodiment, the first end portion 12 protrudes out of the connecting portion 11 in the circumferential direction of the connecting portion 11, and the structure formed by the second end portion 13 and the gasket 20 protrudes out of the connecting portion 11 in the circumferential direction of the connecting portion 11, that is, in the direction from the first end portion 12 to the second end portion 13, the longitudinal section of the accessory assembly 100 is roughly in the shape of an "I", so that a gap P for clamping the orthodontic appliance 201 can be formed between the gasket 20 and the first end portion 12.

[0058] Here, the thickness range of the first end 12 is 0.05mm-0.5mm, the length range of the connecting portion 11 is 0.4mm-1mm, the thickness range of the gasket 20 is 0.05mm-0.4mm, and the thickness range of the second end 13 is 0.05mm-0.4mm, so as to limit the height of the entire accessory assembly 100, but not limited to this.

[0059] In this embodiment, the second end portion 13 has a step surface 131 that protrudes circumferentially from the connecting portion 11, and the step surface 131 supports the gasket 20, or the second end portion 13 has an interface, and the gasket 20 and the interface are engaged with each other, thereby achieving the cooperation between the second end portion 13 and the gasket 20.

[0060] In this embodiment, the gasket 20 includes a through hole 21 , and the second end portion 13 passes through the through hole 21 and cooperates with the gasket 20 . The design of the through hole 21 can simplify the cooperation process between the second end portion 13 and the gasket 20 .

[0061] Here, “the second end portion 13 penetrates the through hole 21 ” means that the second end portion 13 entirely passes through the through hole 21 . At this time, the entire second end portion 13 is outside the through hole 21 , and the gasket 20 is located at the step surface 131 .

[0062] Alternatively, the second end portion 13 passes through the through hole 21 , and part or all of the second end portion 13 is inside the through hole 21 , for example, the gasket 20 cooperates with an interface at the periphery of the second end portion 13 .

[0063] When the second end portion 13 passes through the through hole 21 , the second end portion 13 and the gasket 20 are mated with each other, and a gap P is formed between the gasket 20 and the first end portion 12 .

[0064] In this embodiment, continuing with Figures 1 to 7, the through hole 21 on the gasket 20 is a circular hole, the second end 13 is a cylinder, a frustum or a prism protruding from the connecting portion 11, and the maximum distance formed by two points on the lower bottom surface contour of the cylinder, frustum or prism is greater than the diameter of the through hole 21 in the initial state.

[0065] Among them, the distance range of the second end portion 13 protruding from the connecting portion 11 is 0.02mm-0.5mm, but is not limited to this. The lower base surface of the cylinder is the bottom surface of the cylinder, and the lower base surface of the frustum or prism is the bottom surface of the frustum or prism with a larger size. The "diameter of the through hole 21 in the initial state" refers to the diameter of the through hole 21 when not subject to external force.

[0066] Here, taking the second end portion 13 completely passing through the through hole 21 as an example, when the second end portion 13 abuts against the through hole 21, due to the larger size of the second end portion 13, the through hole 21 will be deformed, allowing the second end portion 13 to pass through the through hole 21 smoothly, and then, the through hole 21 is reset to prevent the second end portion 13 from escaping from the through hole 21.

[0067] In addition, when the second end 13 is a frustum or a prism, the lower base of the frustum or prism is closer to the first end 12 than the upper base, so that a chamfered structure is formed on the outer surface of the second end 13, which can help the second end 13 pass through the through hole 21.

[0068] In this embodiment, the gasket 20 includes a hollow gasket body 22 and a plurality of blocking portions 23 connected to the inner edge of the gasket body 22 and distributed at intervals. Side holes 24 are formed between adjacent blocking portions 23. The side holes 24 are located at the periphery of the through hole 21 and connected to the through hole 21. In the radial direction of the through hole 21, the length range of the blocking portion 23 is 0.1 mm-0.8 mm.

[0069] That is, the blocking portions 23 and the side holes 24 are spaced apart from each other, and a plurality of blocking portions 23 and a plurality of side holes 24 are arranged to form an annular structure. The annular structure is located between the through hole 21 and the gasket body 22 .

[0070] Here, when the second end 13 passes through the through hole 21, the multiple blocking parts 23 are squeezed by the second end 13 and deformed, and the diameter of the auxiliary through hole 21 becomes larger. When the second end 13 completely passes through the through hole 21, the multiple blocking parts 23 rebound and limit the second end 13.

[0071] In this embodiment, as shown in FIG. 2 a to FIG. 2 d , the gasket body 22 and the blocking portion 23 both extend horizontally, that is, the entire gasket 20 is a flat sheet structure.

[0072] The plurality of blocking portions 23 (or the plurality of side holes 24 ) are evenly distributed on the inner edge of the gasket body 22 , and the number of the blocking portions 23 can be two, three, four or six, but is not limited thereto.

[0073] Alternatively, as shown in FIG. 2 e , two gaskets 20 may be connected as one body to accommodate an application scenario having two second end portions 13 .

[0074] Alternatively, as shown in Figure 2f, the gasket body 22 extends horizontally and the blocking portion 23 is bent toward the side away from the first end portion 12. At this time, when the accessory body 10 and the gasket 20 are assembled and the second end portion 13 is subjected to a force toward the first end portion 12, the second end portion 13 drives the blocking portion 23 to deform, thereby reducing the diameter of the through hole 21, thereby improving the bonding strength between the gasket 20 and the accessory body 10.

[0075] Alternatively, as shown in Figure 2g, the gasket body 22 and the blocking portion 23 are both bent toward the side away from the first end 12, and the extension directions of the gasket body 22 and the blocking portion 23 are roughly the same, that is, the entire gasket 20 is roughly funnel-shaped, similar to the description of Figure 2f. When the accessory body 10 and the gasket 20 are assembled and the second end 13 is subjected to a force toward the first end 12, the second end 13 drives the blocking portion 23 to deform, thereby reducing the diameter of the through hole 21, and can drive the gasket body 22 to deform, thereby further reducing the diameter of the through hole 21, thereby improving the bonding strength between the gasket 20 and the accessory body 10.

[0076] In this embodiment, the connecting portion 11 is an integral columnar structure, or the connecting portion 11 includes a plurality of connecting columns arranged at intervals.

[0077] Here, “the connecting portion 11 includes a plurality of connecting columns arranged at intervals” means that the connecting portion 11 is a split structure, which can facilitate the deformation of the connecting portion 11.

[0078] Specifically, referring to FIG. 3 , the connecting portion 11 includes a plurality of connecting columns 11 ′ spaced apart from the first end portion 12 . A step portion 13 ′ extending outward is formed on one side of the connecting column 11 ′ away from the first end portion 12 . The plurality of step portions 13 ′ cooperate to form the second end portion 13 .

[0079] It can be seen that since the multiple connecting columns 11' are arranged at intervals, when the second end 13 abuts the through hole 21, the connecting column 11' drives the corresponding step portion 13' to retract so that the second end 13 passes through the through hole 21, and then the connecting column 11' drives the corresponding step portion 13' to return to its original position so that the second end 13 cannot escape from the through hole 21. At this time, the through hole 21 can be designed with no deformation ability or a smaller deformation ability.

[0080] In this embodiment, the first end portion 12, the connecting portion 11 and the second end portion 13 are connected to form an integral structure independent of the gasket 20, the maximum distance formed by two points on the outer contour of the end surface of the first end portion 12 is greater than the maximum distance formed by two points on the outer contour of the end surface of the second end portion 13, and the maximum distance formed by two points on the outer contour of the end surface of the gasket 20 is greater than the maximum distance formed by two points on the outer contour of the end surface of the second end portion 13.

[0081] Here, the "end face outer contour" refers to the outer periphery of the end face of each component in the extension direction of the connecting portion 11. Taking the first end 12 as an example, the first end 12 has two end faces close to the second end 13 and away from the second end 13. The two end faces may have different shapes or sizes. The "maximum distance formed by two points on the end face outer contour of the first end 12" refers to the maximum distance formed by two points on the outer contour of the end face with a larger area. The description of the gasket 20 and the second end 13 can refer to the description of the first end 12 above.

[0082] When the end faces of the first end 12, the second end 13 and the gasket 20 are all circular, the maximum radial dimension of the end face of the first end 12 is greater than the maximum radial dimension of the end face of the second end 13, and the maximum radial dimension of the end face of the gasket 20 is greater than the maximum radial dimension of the end face of the second end 13.

[0083] In this embodiment, in conjunction with Figures 4 to 7, the shell-shaped dental device 200 includes an accessory assembly 100 and an orthodontic appliance 201. The orthodontic appliance 201 takes an invisible orthodontic appliance as an example. At this time, the orthodontic appliance 201 includes a cavity S for accommodating teeth, an inner surface S1 close to the cavity S, and an outer surface S2 away from the cavity S, but is not limited to this. The orthodontic appliance 201 can also be other forms of orthodontic appliances.

[0084] Here, the shape of the cavity S matches the tooth.

[0085] The appliance 201 further includes a mounting hole T extending through the inner surface S1 and the outer surface S2 . When the accessory assembly 100 is assembled to the appliance 201 , the accessory body 10 passes through the mounting hole T and the gap P clamps the peripheral area of ​​the mounting hole T.

[0086] That is to say, the second end portion 13 at this time passes through the mounting hole T and the through hole 21 in sequence and cooperates with the gasket 20. After the accessory assembly 100 is assembled, the first end portion 12 is located on one side of the inner surface S1 or one side of the outer surface S2 of the corrector 201, and the second end portion 13 and the gasket 20 are located on the other side of the corrector 201. In this embodiment, the gasket 20 is completely located on one side of the inner surface S1 as an example, that is, the gasket 20 does not extend to the side of the mounting hole T or the outer surface S2, which can simplify the assembly process of the gasket 20 and the accessory body 10.

[0087] Here, compared with the design of directly bonding or welding the accessory assembly 100 to the surface of the corrector 201, this embodiment realizes a snap-on mechanical fit between the accessory assembly 100 and the corrector 201 by forming a mounting hole T on the corrector 201. The mechanical fit can greatly improve the stability of the fit, and the split accessory body 10 and gasket 20 can greatly reduce the difficulty of assembling the accessory assembly 100 and the corrector 201.

[0088] In this embodiment, the corrector 201 also includes a mounting platform 202 protruding toward a side away from the cavity S. The mounting platform 202 includes a first mounting surface 2021 located on the outer surface S1 and a second mounting surface 2022 located on the inner surface S2. The mounting hole T passes through the first mounting surface 2021 and the second mounting surface 2022. The setting of the mounting platform 202 can provide sufficient space for the installation of the accessory assembly 100.

[0089] Here, the distance that the mounting platform 202 protrudes from the cavity S (or tooth surface) ranges from 0.1mm to 1mm. Taking the mounting hole T located on the side of the mounting platform 202 away from the cavity S as an example, that is, the mounting hole T is located on the top surface of the mounting platform 202 at this time, but it is not limited to this.

[0090] The second mounting surface 2022 is surrounded by a receiving cavity S′ communicating with the mounting hole T and the cavity S. When the accessory assembly 100 is assembled to the orthodontic appliance 201 , the gasket 20 and the second end portion 13 are both located in the receiving cavity S′.

[0091] That is to say, the gasket 20 and the second end 13 do not extend into the cavity S. When the patient wears the shell-shaped dental appliance 200, the gasket 20 and the second end 13 arranged near the cavity S will not interfere with the teeth in the cavity S, thereby avoiding the generation of unnecessary forces.

[0092] In other embodiments, at least part of the gasket 20 and the second end portion 13 may extend out of the accommodating cavity S', and in this case, for example, may extend to the adjacent tooth gap area or the cavitation area, and the gasket 20 or the second end portion 13 extending out of the accommodating cavity S' will not interfere with the teeth.

[0093] In this embodiment, the first mounting surface 2021 includes a first plane 2021 ′ away from the cavity S, the first plane 2021 ′ is used to support the first end 12 , and the second mounting surface 2022 includes a second plane 2022 ′ close to the cavity S, the second plane 2022 ′ is used to support the gasket 20 .

[0094] Here, the outer contour of the first plane 2021 ′ is substantially consistent with the outer contour of the first end 12 , and the outer contour line of the first plane 2021 ′ is located outside the outer contour line of the first end 12 , and the distance between the two outer contour lines ranges from 0.05 mm to 0.4 mm.

[0095] The first plane 2021' and the second plane 2022' are both arranged around the mounting hole T. "The first plane 2021' is used to support the first end 12" means that the first plane 2021' is in direct contact with the first end 12, and "the second plane 2022' is used to support the gasket 20" means that the second plane 2022' is in direct contact with the gasket 20.

[0096] Specifically, the first end portion 12 includes a first mating surface 121 facing the first plane 2021'. The first mating surface 121 is a plane and abuts against the first plane 2021', or the first mating surface 121 is provided with a friction structure 1211 abutting against the first plane 2021' (see Figure 17).

[0097] Here, when the first mating surface 121 and the first plane 2021' are in plane contact with each other, the contact area between the first end portion 12 and the first plane 2021' can be increased; when the first mating surface 121 is provided with a friction structure 1211, the anti-slip effect between the first mating surface 121 and the first plane 2021' can be enhanced. In short, the stability of the mating between the first mating surface 121 and the first plane 2021' can be improved, thereby preventing the first end portion 12 from rotating relative to the first plane 2021'.

[0098] It should be noted that the friction structure 1211 can be a convex structure, or the friction structure 1211 can be a concave-convex matching structure formed between the first matching surface 121 and the first plane 2021', and when the first matching surface 121 is provided with a friction structure 1211, the first plane 2021' is also changed to a non-planar structure, and the anti-slip effect can still be achieved through the matching of the non-planar structure and the friction structure 1211, the same below.

[0099] Similarly, the gasket 20 includes a second mating surface 203 facing the second plane 2022 ′. The second mating surface 203 is a plane and abuts against the second plane 2022 ′. Alternatively, the second mating surface 203 is provided with a friction structure abutting against the second plane 2022 ′.

[0100] Here, when the second mating surface 203 and the second plane 2022' are in plane contact with each other, the contact area between the gasket 20 and the second plane 2022' can be increased; when the second mating surface 203 is provided with a friction structure, the anti-slip effect between the second mating surface 203 and the second plane 2022' can be enhanced. In short, the stability of the mating between the second mating surface 203 and the second plane 2022' can be improved, thereby preventing the gasket 20 from rotating relative to the second plane 2022'.

[0101] In this embodiment, the inner contour of the mounting hole T matches the outer contour of the connecting portion 11 of the accessory body 10 , and the inner contour of the mounting hole T is circular or non-circular.

[0102] Among them, the non-circular shape can be an ellipse, a runway shape or a polygon, etc., which is equivalent to forming a limiting structure to prevent rotation at the inner contour of the mounting hole T. For example, when the inner contour of the mounting hole T is a runway shape or a polygon, the inner wall of the mounting hole T includes a plane, which can prevent the connecting part 11 from rotating relative to the mounting hole T, and can realize the installation of a specific angle between the accessory assembly 100 and the corrector 201.

[0103] In this embodiment, the accessory body 10 also includes a limiting portion located on the outer surface of the connecting portion 11 (see the limiting portion 111h in Figure 31). When the accessory assembly 100 is assembled to the corrector 201, the limiting portion and the corrector 201 abut against each other to limit the rotation of the accessory body 10 relative to the corrector 201.

[0104] The limiting portion is located in the gap P, and the limiting portion includes a plane, or the limiting portion includes a plurality of barbs distributed at intervals along the circumference of the connecting portion 11 (see the barb 1111h in Figure 31).

[0105] Here, when the limiting portion includes a plane, that is, the outer surface of the connecting portion 11 includes a plane, the plane of the connecting portion can abut against the plane of the inner wall of the mounting hole T to limit the rotation of the connecting portion 11 relative to the mounting hole T. For example, as shown in Figures 8 and 9, the mounting hole T at this time is a runway hole with a plane, the outer surface of the connecting portion 11 includes a plane, and the outer contour of the connecting portion 11 matches the inner contour of the mounting hole T. The connecting portion 11 can only be inserted into the mounting hole T at a specific angle.

[0106] When the limiting portion includes a plurality of barbs, the barbs abut against the inner wall of the mounting hole T to limit the connection portion 11 from rotating relative to the mounting hole T, thereby limiting the attachment body 10 from rotating relative to the appliance 201 .

[0107] In this embodiment, the shell-shaped dental appliance 200 further includes a colloid located inside the accessory assembly 100 or between the accessory assembly 100 and the appliance 201 .

[0108] For example, colloid is filled between the mounting hole T and the connecting portion 11 , or colloid is filled between the first end portion 12 and the appliance 201 , or colloid is filled between the spacer 20 and the appliance 201 , and so on.

[0109] In this embodiment, the mounting hole T is set corresponding to the gap between adjacent teeth. In this way, the accessory assembly 100 can be prevented from protruding too high from the tooth surface as a whole, thereby affecting the wearing experience. In addition, the mounting hole T can be set corresponding to the cheek surface, but is not limited to this. The opening position of the mounting hole T can be determined according to specific needs.

[0110] Here, when the mounting hole T is arranged corresponding to the cheek, the maximum distance between two points on the outer contour of the first end portion 12 exposed at the cheek does not exceed 5 mm, so as to avoid affecting the assembly success rate due to the oversized first end portion 12.

[0111] In this embodiment, the accessory assembly 100 further includes a functional portion 30 , which is integrally formed with the first end portion 12 , or the functional portion 30 is detachably connected to the first end portion 12 , and different functional portions 30 can be adapted to different application scenarios.

[0112] Specifically, the functional part 30 is located on the side of the first end 12 away from the second end 13, and the functional part 30 is a hook-shaped structure, a jaw pad structure, a tubular structure, a groove structure, a ring structure, a tongue thorn structure, a tongue position guide structure, an indicator, a detector or a releaser.

[0113] The hook-shaped structure is used to provide a hanging point for hanging traction, and can be used in conjunction with rubber bands, J hooks, etc.

[0114] The jaw pad structure is used to open the bite and / or adjust the jaw position, such as leading the mandible forward, correcting a misaligned jaw, etc.

[0115] The tubular structure can cooperate with arch wires, metal wires, etc. to provide support and / or thrust and / or tension and / or torsional force and / or expansion force, etc.

[0116] The grooved structure can cooperate with arch wires, metal wires, etc. to provide support and / or thrust and / or tension and / or torsional force and / or expansion force, etc.

[0117] The ring structure is used to provide a hanging point for hanging traction and / or support, and can be used in conjunction with rubber bands, J hooks, muscle function training structures, etc.

[0118] The tongue thorn structure is used to help patients correct tongue position.

[0119] The tongue position guide structure is used to guide the tongue during training, thereby adjusting its position.

[0120] The indicator is used to indicate the wearing time of the patient, monitor patient compliance, etc.

[0121] The detector is used to detect oral environment, etc.

[0122] Releasers are used to release chemical substances in the oral cavity, such as breath fresheners, agents for treating periodontal disease, etc.

[0123] Below, various specific embodiments of the accessory combination 100 of the present application are introduced.

[0124] 10 and 11 are schematic diagrams of the accessory body 10 according to the first embodiment.

[0125] In the first specific embodiment, the functional part 30, the first end 12, the connecting part 11 and the second end 13 are an integral structure, the functional part 30 is an annular structure, and the annular structure is roughly a square ring, the connecting part 11 is an integral long cylindrical strip, the first end 12 is a flat cylinder, and the second end 13 is a flat cylinder. The first mating surface 121 of the first end 12 is a plane, and the second end 13 has a step surface 131 that protrudes out of the connecting part 11 in the circumferential direction of the connecting part 11. When the accessory body 10 and the gasket 20 are assembled to the corrector 201, the first mating surface 121 of the first end 12 and the first plane 2021' of the corrector 201 are in two-way plane contact to prevent the first end 12 from rotating relative to the first plane 2021'. The second end 13 passes through the through hole 21 of the gasket 20 so that the gasket 20 is located on the step surface 131, and the side of the gasket 20 away from the step surface 131 abuts the second plane 2022' of the corrector 201.

[0126] 12 and 13 are schematic diagrams of an accessory body 10a according to a second embodiment. For ease of explanation, the same or similar structures as those in the first embodiment are used in the second embodiment, and the same shall apply hereinafter.

[0127] The main difference between the second embodiment and the first embodiment is that the annular structure of the functional portion 30a of the second embodiment is a circular ring, and the second end portion 13a is a frustum.

[0128] For other descriptions of the second embodiment, reference may be made to the first embodiment, which will not be repeated here.

[0129] 14 and 15 are schematic diagrams of the accessory body 10b according to the third embodiment.

[0130] The main difference between the third specific embodiment and the second specific embodiment is that the second end 13b of the third specific embodiment has an interface 132b, where the interface 132b is an annular recess. When the accessory body 10b and the gasket 20 are assembled to the corrector 201, the through hole 21 of the gasket 20 and the interface 132b are engaged with each other. For example, a protrusion that cooperates with the interface 132b is formed at the through hole 21. At this time, part or all of the second end 13b is inside the through hole 21.

[0131] Here, the depth of the interface 132b ranges from 0.02 mm to 0.5 mm.

[0132] For other descriptions of the third specific embodiment, reference can be made to other specific embodiments and will not be repeated here.

[0133] 16 and 17 are schematic diagrams of an accessory body 10c according to a fourth embodiment.

[0134] In the fourth specific embodiment, the functional portion 30c, the first end portion 12c, the connecting portion 11c and the second end portion 13c are an integrated structure, the functional portion 30c is a hook-shaped structure 30c, the first end portion 12c includes a mounting surface 122c away from the second end portion 13c, the hook-shaped structure 30c is located on the mounting surface 122c, and a gap 31c for the traction member to enter and exit is formed between the hook-shaped structure 30c and the mounting surface 122c, the junction area between the hook-shaped structure 30c and the mounting surface 122c is located at the edge of the mounting surface 122c, the mounting surface 122c is circular, and in other embodiments, the mounting surface may also be elliptical.

[0135] The connecting portion 11c is an integral long cylindrical strip, the first end portion 12c is a flat cylinder, and the second end portion 13c is a frustum. The first mating surface 121c of the first end portion 12c is provided with a friction structure 1211c, and the friction structure 1211c is a plurality of sharp protrusion structures. The second end portion 13c has a step surface 131c that protrudes out of the connecting portion 11c in the circumferential direction of the connecting portion 11c. When the accessory body 10c and the gasket 20 are assembled to the corrector 201, the friction structure 1211c contacts the first plane 2021' of the corrector 201 to prevent the first end portion 12c from rotating relative to the first plane 2021'. The second end portion 13c passes entirely through the through hole 21 of the gasket 20 so that the gasket 20 is located on the step surface 131c, and the side of the gasket 20 away from the step surface 131 abuts the second plane 2022' of the corrector 201.

[0136] It should be noted that when the hook-shaped structure 30c is subjected to the force of the traction member, since the fitting strength between the first fitting surface 121c of the first end portion 12c and the first plane 2021' of the orthodontic device 201 is better at this time, the action of the traction force is not likely to cause separation between the first end portion 12c and the orthodontic device 201, and the entire accessory body 10c is not likely to separate from the orthodontic device 201.

[0137] For other descriptions of the fourth specific embodiment, reference can be made to other specific embodiments and will not be repeated here.

[0138] 18 and 19 are schematic diagrams of an accessory body 10d according to a fifth embodiment.

[0139] In the fifth embodiment, the accessory assembly includes two accessory bodies 10d and two gaskets 20, the two first ends 12d are connected to each other, the two second ends 13d are separated from each other, and the two gaskets 20 respectively cooperate with the two second ends 13d.

[0140] Here, the functional portion 30d is a groove-shaped structure, and the functional portion 30d extends to cover the two connected first end portions 12d.

[0141] It can be understood that the size of the accessory combination at this time is larger, that is, the functional part 30d of the groove-shaped structure is long and can be set corresponding to multiple teeth. Of course, in other embodiments, the number of accessory bodies in an accessory combination can also be more than two.

[0142] For other descriptions of the fifth specific embodiment, reference can be made to other specific embodiments and will not be repeated here.

[0143] 20 and 21 are schematic diagrams of an accessory body 10e according to a sixth embodiment.

[0144] The main difference between the sixth embodiment and the fifth embodiment is that the functional portion 30e of the sixth embodiment is a tubular structure.

[0145] In addition, referring to FIG. 22 and FIG. 23 , the two gaskets 20 e that cooperate with the two second end portions 13 e may be connected as one piece, thereby facilitating assembly.

[0146] For other descriptions of the sixth specific embodiment, reference can be made to other specific embodiments and will not be repeated here.

[0147] 24 and 25 are schematic diagrams of an accessory body 10 f according to a seventh embodiment.

[0148] The main difference between the seventh embodiment and the fifth embodiment is that the functional portion 30f of the seventh embodiment is a jaw pad structure.

[0149] For other descriptions of the seventh specific embodiment, reference can be made to other specific embodiments and will not be repeated here.

[0150] 26 to 29 , which are schematic diagrams of an accessory assembly 100g according to an eighth specific embodiment.

[0151] In the eighth specific embodiment, the functional portion 30g, the first end portion 12g, the connecting portion 11g and the second end portion 13g are an integrated structure, the functional portion 30g is a hook-shaped structure 30g, and the hook-shaped structure 30g is specifically a mushroom head structure. The first end portion 12g includes a mounting surface 122g away from the second end portion 13g, the hook-shaped structure 30g is located on the mounting surface 122g, and the junction area between the hook-shaped structure 30g and the mounting surface 122g is located in the middle of the mounting surface 122g, and the mounting surface 122g is circular.

[0152] The connecting portion 11g is an integral long cylindrical strip, the first end 12g is a flat cylindrical strip, the second end 13g is a flat cylindrical strip, the first mating surface 121g of the first end 12g is a plane, and the second end 13g has a step surface 131g that protrudes from the connecting portion 11g in the circumferential direction of the connecting portion 11g.

[0153] The gasket 20g includes a hollow gasket body 22g and a plurality of blocking portions 23g connected to the inner edge of the gasket body 22g and distributed at intervals. The gasket body 22g and the blocking portions 23g are both bent toward the side away from the first end portion 12g, and the extension directions of the gasket body 22g and the blocking portions 23g are roughly the same, that is, the entire gasket 20g is roughly funnel-shaped, and the large-diameter opening of the funnel-shaped is closer to the first end portion 12g than the small-diameter opening. The gasket body 22g is closer to the first end portion 12g than the blocking portions 23g. The multiple blocking portions 23g of the gasket 20g are arranged to form a through hole 21g, and the through hole 21g is circular.

[0154] It can be understood that when the second end portion 13g passes through the through hole 21g, the funnel-shaped gasket 20g guides the second end portion 13g and assists the second end portion 13g in contacting and passing through the through hole 21g.

[0155] When the accessory body 10g and the gasket 20g are assembled to the corrector 201, the first mating surface 121g of the first end portion 12g is in plane contact with the first plane 2021' of the corrector 201 to prevent the first end portion 12g from rotating relative to the first plane 2021', and the second end portion 13g passes entirely through the through hole 21g of the gasket 20g so that the gasket 20g is located on the step surface 131g, and the side of the gasket 20g away from the step surface 131g (that is, the edge of the large-diameter opening of the gasket 20g) abuts against the second plane 2022' of the corrector 201.

[0156] When the accessory body 10g and the gasket 20g are assembled and the second end 13g is subjected to a force in the direction toward the first end 12g, for example, when the accessory body 10g is subjected to a large load and the accessory body 10g tends to move away from the gasket 20g, the second end 13g has a tendency to move toward the first end 12g and drives the blocking portion 23g to deform toward the side close to the first end 12g. The blocking portion 23g gradually becomes flat and the diameter of the through hole 21g is reduced, that is, the gasket 20g is tightened and squeezes the connecting portion 11g. The fitting strength between the gasket 20g and the accessory body 10g is enhanced to prevent the accessory body 10g from falling off. At this time, the accessory body 10g may shake relative to the orthodontic appliance 201, but the accessory body 10g will not fall off from the orthodontic appliance 201.

[0157] Furthermore, in this specific embodiment, since the gasket body 22g can also be gradually flattened under the action of the blocking portion 23g, the matching strength between the gasket 20g and the accessory body 10g can be further enhanced.

[0158] It should be noted that when the hook-shaped structure 30g is subjected to the force of the traction member, since the fitting strength between the first fitting surface 121g of the first end portion 12g and the first plane 2021' of the orthodontic device 201 is better at this time, the traction force is not likely to cause separation between the first end portion 12g and the orthodontic device 201, and the entire accessory body 10g is not likely to separate from the orthodontic device 201.

[0159] For other descriptions of the eighth specific embodiment, reference can be made to other specific embodiments and will not be repeated here.

[0160] 30 to 34 are schematic diagrams of an accessory assembly 100h according to a ninth embodiment.

[0161] The main difference between the ninth embodiment and the eighth embodiment is that the second end 13h of the ninth embodiment is a frustum, the gasket 20h includes a hollow gasket body 22h and a plurality of blocking portions 23h connected to the inner edge of the gasket body 22h and spaced apart, the gasket body 22h extends horizontally and the blocking portions 23h are bent toward a side away from the first end 12h, and the plurality of blocking portions 23h of the gasket 20h are arranged to form a through hole 21h, which is circular.

[0162] The gasket 20h has at least one first fitting portion 25h on one side close to the first end portion 12h. When the accessory assembly 100 is assembled to the orthodontic appliance 201, the first fitting portion 25h cooperates with the second fitting portion on the orthodontic appliance 201 to limit the rotation of the gasket 20h relative to the orthodontic appliance 201.

[0163] Specifically, the first matching portion 25h and the second matching portion are concave-convex matching structures. In this specific embodiment, the first matching portion 25h is a recess provided on the gasket body 22h, and the second matching portion is a convex portion located on the corrector 201. The recess and the convex portion cooperate with each other to limit the rotation of the gasket 20h relative to the corrector 201. Of course, in other embodiments, the first matching portion 25h may be a convex portion, and the second matching portion may be a recess.

[0164] A limiting portion 111h is provided on the outer surface of the connecting portion 11h. The limiting portion 111h includes a plurality of barbs 1111h spaced apart along the circumference of the connecting portion 11h. The plurality of barbs 1111h are arranged at the same height.

[0165] When the accessory body 10h and the gasket 20h are assembled to the corrector 201, the first mating surface 121h of the first end portion 12h and the first plane 2021' of the corrector 201 are in plane contact with each other to prevent the first end portion 12h from rotating relative to the first plane 2021', and the second end portion 13h passes entirely through the through hole 21h of the gasket 20h so that the gasket 20h is located on the step surface 131h, and the gasket 20h has a first mating portion 25h on the side away from the step surface 131h, and has a second mating portion at the second plane 2022' of the corrector 201, and the first mating portion 25h and the second mating portion cooperate with each other to limit the rotation of the gasket 20h relative to the corrector 201.

[0166] At the same time, the plurality of barbs 1111h abut against the inner wall of the mounting hole T to restrict the connection portion 11h from rotating relative to the mounting hole T, thereby restricting the attachment body 10h from rotating relative to the appliance 201 .

[0167] Here, since the multiple barbs 1111h are distributed at intervals, the contact areas between the multiple barbs 1111h and the inner wall of the mounting hole T are discontinuous point contacts or line contacts, which can increase the abutment strength between the multiple barbs 1111h and the inner wall of the mounting hole T, and can not only limit the rotation of the accessory body 10h relative to the orthodontic appliance 201, but also limit the movement of the accessory body 10h in the vertical direction (i.e., the extension direction of the connecting portion 11h) relative to the orthodontic appliance 201.

[0168] In the vertical direction, the barb portion 1111h has a certain length. In this way, when adapting to the orthodontic appliances 201 of different thicknesses, it can be ensured that the barb portion 1111h and the inner wall of the mounting hole T abut against each other.

[0169] When the accessory body 10h and the gasket 20h are assembled and the second end 13h is subjected to a force in the direction toward the first end 12h, for example, when the accessory body 10h is subjected to a large load and the accessory body 20h tends to move away from the gasket 20h, the second end 13h has a tendency to move toward the first end 12h and drives the blocking portion 23h to deform toward the side close to the first end 12h. The blocking portion 23h gradually becomes flat and the diameter of the through hole 21h is reduced, that is, the gasket 20h is tightened and squeezes the connecting portion 11h. The fitting strength between the gasket 20h and the accessory body 10h is enhanced to prevent the accessory body 10h from falling off. At this time, the accessory body 10h may shake relative to the orthodontic appliance 201, but the accessory body 10h will not fall off from the orthodontic appliance 201.

[0170] In order to further prevent it from falling off, colloid may be filled in the mounting hole T. The colloid may also be filled between the first end portion 12h and the appliance 201, between the gasket 20h and the appliance 201, and so on.

[0171] In addition, in this specific embodiment, the gasket 20h also includes a cover portion 26h that is arranged around the outer periphery of the gasket body 22h and extends toward a side away from the first end 12h. At this time, the gasket body 22h and the cover portion 26h are arranged to form a chamber, which can provide a positioning assistance function during the assembly process of the gasket 20h.

[0172] For other descriptions of the ninth specific embodiment, reference can be made to other specific embodiments and will not be repeated here.

[0173] 35 to 38 are schematic diagrams of an accessory assembly 100i according to a tenth embodiment.

[0174] The main difference between the tenth embodiment and the ninth embodiment is that the second end 13i of the tenth embodiment is a prism, specifically a quadrangular prism, and the gasket 20i includes a hollow gasket body 22i, which directly surrounds a through hole 21i.

[0175] Here, the four edges of the second end 13i can form stress concentration. When the second end 13i passes through the through hole 21i, the four edges of the second end 13i can more easily squeeze the through hole 21i through the concentrated stress, causing the through hole 21i to deform. Even if the multiple blocking parts distributed at intervals around the through hole 21i are omitted, the through hole 21i can be deformed smoothly, that is, the second end 13i in the form of a prism can greatly reduce the resistance of the second end 13i to penetrating the through hole 21i.

[0176] Compared with the gasket 20h of the ninth embodiment, the gasket 20i of this embodiment has a simpler structure, which largely avoids the shaking problem caused by the gap between the accessory body 10i and the gasket 20i after assembly.

[0177] For other descriptions of the tenth specific embodiment, reference can be made to other specific embodiments and will not be repeated here.

[0178] In summary, this embodiment achieves mutual fixation of the accessory assembly 100 and the appliance 201 by clamping the appliance 201 through the cooperation of the accessory body 10 and the gasket 20, which can enhance the connection strength and connection reliability between the accessory assembly 100 and the appliance 201, thereby reducing the risk of the accessory assembly 100 falling off. Even if the accessory assembly 100 fails due to excessive load in extreme cases, the accessory assembly 100 will not fall off the appliance 201, thereby avoiding the situation where the accessory assembly 100 is swallowed by the patient.

[0179] In addition, by adding some additional structures (such as limiting parts, planes, blocking parts, etc.) to the accessory body 10, gasket 20, and corrector 201, the assembly process of the accessory body 10 and the gasket 20 can be facilitated, and the stability of the assembly between the accessory body 10, gasket 20 and corrector 201 can be improved.

[0180] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0181] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of this application. They are not intended to limit the scope of protection of this application. Any equivalent implementation methods or changes that do not deviate from the technical spirit of this application should be included in the scope of protection of this application.

Claims

1. An accessory assembly for fixing to an appliance, characterized in that: The accessory assembly includes an accessory body and a gasket, the accessory body includes a connecting portion and a first end and a second end located on opposite sides of the connecting portion, the gasket and the second end cooperate with each other, and a gap is formed between the gasket and the first end, and the gap is fixed to the corrector.

2. The accessory assembly according to claim 1, characterized in that: The gasket comprises a through hole, and the second end portion penetrates into the through hole and cooperates with the gasket.

3. The accessory assembly according to claim 2, characterized in that: The through hole is a circular hole, the second end is a cylinder, a frustum or a pyramid protruding out of the connecting portion, and the maximum distance formed by two points on the lower bottom surface contour of the cylinder, frustum or pyramid is greater than the diameter of the through hole in the initial state.

4. The accessory assembly according to claim 2, characterized in that: The gasket comprises a hollow gasket body and a plurality of blocking parts connected to the inner edge of the gasket body and distributed at intervals, and side holes are formed between adjacent blocking parts. The side holes are located at the periphery of the through hole and connected to the through hole.

5. The accessory assembly according to claim 4, characterized in that: The gasket body and the blocking portion both extend horizontally, or the gasket body extends horizontally and the blocking portion is bent toward a side away from the first end, or the gasket body and the blocking portion are both bent toward a side away from the first end.

6. The accessory assembly according to claim 1, characterized in that: The accessory body also includes a limiting portion located on the outer surface of the connecting portion. When the accessory assembly is assembled to the orthodontic appliance, the limiting portion and the orthodontic appliance abut against each other to limit the rotation of the accessory body relative to the orthodontic appliance.

7. The accessory assembly according to claim 6, characterized in that: The limiting portion is located in the gap, and the limiting portion includes a plane, or the limiting portion includes a plurality of barbs distributed at intervals along the circumference of the connecting portion.

8. The accessory assembly according to claim 1, characterized in that: The connecting portion is an integrated columnar structure, or the connecting portion includes a plurality of connecting columns arranged at intervals.

9. The accessory assembly according to claim 1, characterized in that: The first end portion protrudes out of the connecting portion in a circumferential direction of the connecting portion, and a structure formed by the second end portion cooperating with the gasket protrudes out of the connecting portion in a circumferential direction of the connecting portion.

10. The accessory assembly according to claim 9, characterized in that: The second end portion has a step surface protruding out of the connecting portion toward the circumference of the connecting portion, and the step surface carries the gasket, or the second end portion has an interface, and the gasket and the interface are engaged with each other.

11. The accessory assembly according to claim 1, characterized in that: The gasket has at least one first matching portion on one side close to the first end portion. When the accessory assembly is assembled to the orthodontic appliance, the first matching portion cooperates with the second matching portion on the orthodontic appliance to limit the gasket from rotating relative to the orthodontic appliance.

12. The accessory assembly according to claim 1, characterized in that: The accessory assembly further includes a functional portion, which is integrally formed with the first end portion, or the functional portion is detachably connected to the first end portion.

13. The accessory assembly according to claim 12, characterized in that: The functional part is located on a side of the first end away from the second end, and the functional part is a hook-shaped structure, a jaw pad structure, a tubular structure, a groove structure, a ring structure, a tongue thorn structure, a tongue position guiding structure, an indicator, a detector or a releaser.

14. The accessory assembly according to claim 12, characterized in that: The functional part is a hook-shaped structure, the first end portion includes a mounting surface away from the second end portion, the hook-shaped structure is located on the mounting surface, and a gap is formed between the hook-shaped structure and the mounting surface for the traction member to enter and exit.

15. The accessory assembly according to claim 1, characterized in that: The accessory assembly comprises two accessory bodies and two gaskets, the two first ends are connected to each other, the two second ends are separated from each other, and the two gaskets cooperate with the two second ends respectively.

16. The accessory assembly according to claim 1, characterized in that: The first end, the connecting portion and the second end are connected to form an integral structure independent of the gasket, the maximum distance formed by two points on the outer contour of the end surface of the first end is greater than the maximum distance formed by two points on the outer contour of the end surface of the second end, and the maximum distance formed by two points on the outer contour of the end surface of the gasket is greater than the maximum distance formed by two points on the outer contour of the end surface of the second end.

17. A shell-shaped dental instrument, characterized in that: It comprises a brace and an accessory assembly as described in any one of claims 1 to 16, wherein the brace comprises a cavity for accommodating teeth, an inner surface close to the cavity and an outer surface away from the cavity, and the brace also comprises a mounting hole passing through the inner surface and the outer surface, and when the accessory assembly is assembled to the brace, the accessory body passes through the mounting hole and the gap clamps the peripheral area of ​​the mounting hole.

18. The shell-shaped dental device according to claim 17, characterized in that: The gasket is located entirely on one side of the inner surface.

19. The shell-shaped dental device according to claim 17, characterized in that: The orthodontic device also includes a mounting platform protruding toward a side away from the cavity, the mounting platform includes a first mounting surface located on the outer surface and a second mounting surface located on the inner surface, and the mounting hole passes through the first mounting surface and the second mounting surface.

20. The shell-shaped dental device according to claim 19, characterized in that The second mounting surface is configured to form a receiving cavity connecting the mounting hole and the cavity. When the accessory assembly is assembled to the corrector, the gasket and the second end are both located in the receiving cavity, or at least a portion of the gasket and the second end extends out of the receiving cavity.

21. The shell-shaped dental device according to claim 19, characterized in that The first mounting surface includes a first plane away from the cavity, the first plane is used to support the first end, and the second mounting surface includes a second plane close to the cavity, the second plane is used to support the gasket.

22. The shell-shaped dental device according to claim 21, characterized in that The first end portion includes a first mating surface arranged facing the first plane, the first mating surface is a plane and abuts against the first plane, or the first mating surface is provided with a friction structure abutting against the first plane.

23. The shell-shaped dental device according to claim 21, characterized in that The gasket includes a second mating surface facing the second plane, the second mating surface is a plane and abuts against the second plane, or the second mating surface is provided with a friction structure abutting against the second plane.

24. The shell-shaped dental device according to claim 17, characterized in that The inner contour of the mounting hole matches the outer contour of the connecting portion, and the inner contour of the mounting hole is circular or non-circular.

25. The shell-shaped dental device according to claim 17, characterized in that The mounting holes are arranged corresponding to the gaps between adjacent teeth.

26. The shell-shaped dental device according to claim 17, characterized in that The shell-shaped dental appliance further comprises a colloid located inside the accessory assembly or between the accessory assembly and the orthodontic appliance.

Images