Traction device and shell-shaped dental aligner, system and kit having a traction device

Abstract

The application discloses a traction device and a shell-shaped tooth corrector, a system and a set of corrector correctors with the traction device, wherein the traction device comprises a traction member, the traction member comprises a traction part for traction, a connecting part and a mounting part provided with a force dispersion member, the traction part is arranged at one end of the connecting part, the mounting part is arranged at the other end of the connecting part, the traction device is fixedly connected with the shell-shaped tooth corrector through the mounting part, and when the traction part is pulled, the mounting part disperses the force generated by traction to the shell-shaped tooth corrector through the force dispersion member. The traction device, the shell-shaped tooth corrector, the system and the set of corrector correctors provided by the application are less deformed and less prone to breakage when being pulled.

Description

Technical Field

[0001] This invention belongs to the field of orthodontic technology, and more specifically relates to a traction device and a shell-shaped orthodontic appliance, system and kit having the traction device. Background Technology

[0002] Traditional orthodontic techniques typically use brackets and wires to move teeth and correct malocclusion. However, these brackets and wires are often excessive and noticeable, significantly impacting aesthetics and potentially causing oral damage such as gingivitis, tooth demineralization, and discoloration. In response, invisible orthodontic systems have emerged. These systems use invisible, shell-like aligners made of flexible, transparent polymer materials to move teeth. The entire treatment process has minimal impact on daily life and social interactions. Furthermore, because patients can remove and wear them themselves, it facilitates daily oral health maintenance, making the entire treatment process more convenient.

[0003] In clinical orthodontic treatment, functional attachments are sometimes used to enhance the orthodontic or orthognathic treatment using shell-shaped orthodontic appliances. Common functional attachments include traction structures, which suspend traction components so that traction force is applied to the corresponding areas. In many cases, such as anterior tooth intrusion, tooth elongation, gap adjustment, eruption traction, and tooth rotation, traction structures are needed for auxiliary treatment.

[0004] In the prior art, openings are pre-made or cut into the shell-shaped orthodontic appliance. The traction device is then glued to the teeth through the pre-made opening or directly suspended through the cut opening. However, pre-making or cutting openings into the shell-shaped orthodontic appliance will damage the structure of the shell-shaped orthodontic appliance itself, resulting in poor fit and insufficient corrective force.

[0005] In the prior art, the traction device can also be directly attached to the surface of the shell-shaped orthodontic appliance. However, when the force generated during traction is concentrated on the shell-shaped orthodontic appliance, it can not only cause severe deformation of the shell-shaped orthodontic appliance, but may even cause it to break. This application provides a technical solution to solve the above problems. Summary of the Invention

[0006] The main objective of this invention is to overcome the deficiencies of the prior art and provide a "traction device and shell-shaped orthodontic appliance, system and kit with traction device" that has less deformation and is less prone to breakage during traction.

[0007] The technical solution provided by this invention is as follows:

[0008] A traction device for a shell-shaped orthodontic appliance includes: a traction member comprising a traction part, a connecting part, and a mounting part with a force-dispersing member. The traction part is located at one end of the connecting part, and the mounting part is located at the other end of the connecting part. The traction device is fixedly connected to the shell-shaped orthodontic appliance via the mounting part. When the traction part is pulled, the mounting part disperses the force generated by the traction to the shell-shaped orthodontic appliance via the force-dispersing member. The traction device, shell-shaped orthodontic appliance, system, and set of orthodontic appliances provided by this invention, with a force-dispersing member provided in the mounting part and connected to the shell-shaped orthodontic appliance via the force-dispersing member, disperses the force generated during traction to the shell-shaped orthodontic appliance when the traction part is pulled, thereby dispersing the force on the shell-shaped orthodontic appliance. This eliminates or at least partially eliminates the undesirable effects of the force generated during traction on the shell-shaped orthodontic appliance, reducing undesirable deformation or breakage of the shell-shaped orthodontic appliance and improving the orthodontic effect.

[0009] More preferably, the force-dispersing component has a mounting surface capable of covering the corresponding traction device mounting area on the shell-shaped orthodontic appliance. The force-dispersing component is fixedly connected to the shell-shaped orthodontic appliance through the mounting surface. The minimum area covered by the mounting surface of the force-dispersing component is larger than the conventional mounting area, which is 1.0 to 3.0 times the minimum mounting area required to meet the traction force. In this embodiment, because the area of ​​the mounting surface is larger than the conventional mounting area, and the force generated during traction is dispersed to the shell-shaped orthodontic appliance using the larger mounting surface, force dispersion is achieved by increasing the contact area, thereby avoiding excessive force concentration on the shell-shaped orthodontic appliance during traction and solving the problem of breakage of the shell-shaped orthodontic appliance.

[0010] More preferably, when the traction device is a standard part, the area of ​​the conventional mounting surface is the same as the area of ​​the mounting surface of the standard part.

[0011] More preferably, the minimum area covered by the mounting surface of the force-dispersing component is 1.01 to 3.0 times the conventional mounting area.

[0012] More preferably, the minimum installation area required to meet the traction force is determined based on the material parameters of the traction device, the size parameters of the traction device, the shape parameters of the traction device, the form of the fixed connection, the traction force, and the shape parameters of the mounting surface.

[0013] More preferably, the force-dispersing component is integrally formed with the traction device at one end of the connecting part, and the force-dispersing component is the mounting part. In this embodiment, the integral forming design not only reduces the process and improves the processing efficiency, but also ensures the stability of the traction device.

[0014] More preferably, the force-dispersing component and the mounting part are designed separately, with the mounting part fixedly connected to the force-dispersing component and then fixedly connected to the shell-shaped orthodontic appliance through the force-dispersing component. This separate design allows for flexible selection of the force-dispersing component and mounting part models according to different orthodontic needs, improving not only the compatibility between force-dispersing components but also the flexibility and applicability of orthodontic treatment.

[0015] More preferably, the force-dispersing component includes a mounting base, through which the force-dispersing component is directly fixedly connected to the shell-shaped orthodontic appliance.

[0016] More preferably, the area of ​​the mounting base is larger than the conventional mounting area.

[0017] More preferably, the force-dispersing component includes a mounting base and a force-dispersing sub-component. One end of the force-dispersing sub-component is fixed to the side of the mounting base facing the shell-shaped orthodontic appliance, and the other end of the force-dispersing sub-component is used for fixed connection with the shell-shaped orthodontic appliance. In this embodiment, by providing the force-dispersing sub-component and connecting it to the shell-shaped orthodontic appliance, the force generated during traction is dispersed to the shell-shaped orthodontic appliance. Since the number of force-dispersing sub-components can be flexibly adjusted, the technical effect of flexibly adjusting the force dispersed on the surface of the shell-shaped orthodontic appliance is achieved.

[0018] More preferably, the sum of the areas of the force-dispersing components and the shell-shaped orthodontic appliance that are fixedly connected is greater than the conventional installation area. In this embodiment, the force generated during traction is dispersed to the shell-shaped orthodontic appliance through the combined action of multiple force-dispersing components. Since the sum of the areas of the multiple force-dispersing components and the shell-shaped orthodontic appliance that are fixedly connected is greater than the conventional installation area, the multiple force-dispersing components can better disperse the force generated during traction to the shell-shaped orthodontic appliance compared to the conventional installation area, thus solving the problem of deformation or breakage caused by excessive force concentration on the shell-shaped orthodontic appliance during traction.

[0019] More preferably, the force-dispersing component includes a plurality of connectors, the force-dispersing component being integrally formed with the mounting base or the connectors being fixedly connected to the side of the mounting base facing the shell-shaped orthodontic appliance.

[0020] More preferably, when the force-dispersing component is integrally formed with the mounting base, the connector is formed by protruding outward from the side of the mounting base facing the shell-shaped orthodontic appliance.

[0021] More preferably, the connector is a column, one end of which is fixed to the side of the mounting base facing the shell-shaped orthodontic appliance, and the other end of which is used for fixed connection with the shell-shaped orthodontic appliance.

[0022] More preferably, the force-distributing components are regularly or irregularly distributed on the side of the mounting base facing the shell-shaped orthodontic appliance, so that when the traction part is pulled, the force-distributing components distribute the force generated by the traction to the shell-shaped orthodontic appliance in a substantially uniform manner. In this embodiment, the distribution state of the force-distributing components on the mounting base can be flexibly set or adjusted according to the orthodontic needs, thereby achieving a more reasonable distribution of the force generated during traction to the shell-shaped orthodontic appliance, solving the problem of deformation or breakage caused by excessive force concentration on the shell-shaped orthodontic appliance during traction.

[0023] More preferably, the column is a cylinder or a prism.

[0024] More preferably, the mounting surface of the force-dispersing component is fixedly connected to the shell-shaped orthodontic appliance by any one of the following methods: bonding, welding, or riveting.

[0025] More preferably, the force-dispersing component is generally elongated or elliptical in shape.

[0026] More preferably, the force-dispersing component is integrally formed with the traction device at one end of the connecting part, and the end of the connecting part opposite to the traction part is connected to the middle or end of the force-dispersing component. In this embodiment, by setting the connection position between the connecting part and the force-dispersing component, the magnitude of the torque during traction can be flexibly adjusted, and the distance between the traction components on different traction devices can also be flexibly adjusted, thereby solving the problem of deformation or breakage caused by excessive force concentration on the shell-shaped orthodontic appliance during traction.

[0027] More preferably, the force-dispersing component and the mounting part are designed separately, with the mounting part connected to the middle or end of the force-dispersing component.

[0028] More preferably, the mounting portion matches the contour of the traction device mounting area of ​​the shell-shaped orthodontic appliance. In this embodiment, because the mounting portion matches the contour of the traction device mounting area of ​​the shell-shaped orthodontic appliance, a closer connection can be achieved between the mounting portion and the traction device mounting area. This increases the effective connection area between the mounting portion and the traction device mounting area, and the larger effective mounting area allows the force generated during traction to be distributed to the shell-shaped orthodontic appliance, solving the problem of deformation or breakage caused by excessive force concentration on the shell-shaped orthodontic appliance during traction.

[0029] More preferably, a mounting platform is provided on the shell-shaped orthodontic appliance. The shape of the mounting part facing the shell-shaped orthodontic appliance matches the contour of the mounting platform, and the mounting part is fixedly connected to the shell-shaped orthodontic appliance through the mounting platform. In this embodiment, the mounting platform solves the problem of bonding stability caused by the uneven surface of the shell-shaped orthodontic appliance or the mounting part. The platform structure allows a stable contact connection to be re-established between the traction device mounting area and the mounting base, thereby improving bonding stability. Furthermore, since the contour of the mounting part matches the traction device mounting area of ​​the shell-shaped orthodontic appliance, a closer fit can be achieved between the mounting part and the traction device mounting area, thereby increasing the effective connection area between the mounting part and the traction device mounting area. The larger effective mounting area allows the force generated during traction to be distributed to the shell-shaped orthodontic appliance, solving the problem of deformation or breakage caused by excessive force concentration on the shell-shaped orthodontic appliance during traction.

[0030] More preferably, the mounting surface of the force dispersing component is fixedly connected to the shell-shaped orthodontic appliance to form a connecting surface, and in each connecting area of ​​the connecting surface, the size of the connecting area is proportional to the magnitude of the force generated by the shell-shaped orthodontic appliance being pulled at the connecting area.

[0031] A shell-shaped orthodontic appliance includes an appliance body and a traction device for the shell-shaped orthodontic appliance in any of the above embodiments, wherein the traction device is fixedly connected to the appliance body.

[0032] More preferably, the orthodontic appliance body includes a traction device mounting area, the stiffness of which is greater than the stiffness of other areas on the orthodontic appliance body excluding the traction device mounting area. In this embodiment, by setting the stiffness of the traction device mounting area to be greater than the stiffness of other areas on the orthodontic appliance body excluding the traction device mounting area, when a traction force is generated, the deformation at the traction device mounting area can be reduced, thereby ensuring that the traction device mounting area and the mounting part are always in a close fit connection, ensuring the effective contact area between the two, and ultimately distributing the traction force generated during traction to the shell-shaped orthodontic appliance, solving the problem of undesirable deformation or breakage of the shell-shaped orthodontic appliance.

[0033] More preferably, the number of diaphragm layers in the traction device mounting area is greater than the number of diaphragm layers in other areas of the orthodontic appliance body besides the traction device mounting area. In this embodiment, by increasing the number of diaphragm layers at the traction device mounting area, the rigidity at that location is enhanced, thereby avoiding or reducing undesirable deformation of that area when traction is applied. This increases the effective contact area between the traction device mounting area and the mounting part, distributing the force generated during traction to the shell-shaped orthodontic appliance, thus solving the problem of undesirable deformation or breakage of the shell-shaped orthodontic appliance.

[0034] More preferably, the elastic modulus of the outermost diaphragm in the traction device mounting area is greater than the elastic modulus of the outermost diaphragm in other areas of the orthodontic appliance body besides the traction device mounting area. In this embodiment, by setting the elastic modulus of the outermost diaphragm at the traction device mounting area to be greater than the elastic modulus of the outermost diaphragm in other areas of the orthodontic appliance body, the stiffness at the traction device mounting area can be increased, thereby avoiding or reducing undesirable deformation of this area when traction is applied. This increases the effective contact area between the traction device mounting area and the mounting part, distributing the force generated during traction to the shell-shaped orthodontic appliance, thus solving the problem of undesirable deformation or breakage of the shell-shaped orthodontic appliance.

[0035] More preferably, the diaphragm thickness in the traction device mounting area is greater than the diaphragm thickness in other areas of the orthodontic appliance body besides the traction device mounting area. In this embodiment, by increasing the diaphragm thickness at the traction device mounting area, the elasticity at that location is reduced and the stiffness at that location is increased, thereby avoiding or reducing undesirable deformation of that area when traction is applied. This increases the effective contact area between the traction device mounting area and the mounting part, distributing the force generated during traction to the shell-shaped orthodontic appliance, thus solving the problem of undesirable deformation or breakage of the shell-shaped orthodontic appliance.

[0036] More preferably, the elastic modulus of the diaphragm material in the traction device mounting area is greater than the elastic modulus of the diaphragm material in other areas of the orthodontic appliance body besides the traction device mounting area. In this embodiment, by setting the elastic modulus of the diaphragm material in the traction device mounting area to be greater than that of the diaphragm material in other areas of the orthodontic appliance body, the stiffness at the traction device mounting area can be increased, thereby avoiding or reducing undesirable deformation of this area when traction is applied. This increases the effective contact area between the traction device mounting area and the mounting part, dispersing the force generated during traction to the shell-shaped orthodontic appliance, thus solving the problem of undesirable deformation or breakage of the shell-shaped orthodontic appliance.

[0037] More preferably, the traction device mounting area is located on the outer surface of the orthodontic appliance body, and the force dispersing member is connected to the outer surface. When the traction part is pulled, the mounting part disperses the force generated by the traction to the shell-shaped orthodontic appliance through the force dispersing member.

[0038] More preferably, the traction device installation area is located on the inner surface of the orthodontic appliance body, and the force dispersing component is connected to the inner surface. When the traction part is pulled and generates traction force, the traction force is dispersed to the shell-shaped orthodontic appliance through the traction force dispersing structure.

[0039] A shell-shaped orthodontic appliance system includes a plurality of shell-shaped orthodontic appliances, wherein at least one of the shell-shaped orthodontic appliances is a shell-shaped orthodontic appliance as described in any of the above embodiments.

[0040] A shell-shaped orthodontic appliance kit includes a maxillary shell-shaped orthodontic appliance and a mandibular shell-shaped orthodontic appliance. The maxillary shell-shaped orthodontic appliance includes an appliance body for covering at least a portion of the maxillary teeth, and the mandibular shell-shaped orthodontic appliance includes an appliance body for covering at least a portion of the mandibular teeth. The maxillary shell-shaped orthodontic appliance and / or the mandibular shell-shaped orthodontic appliance are shell-shaped orthodontic appliances as described in any of the above embodiments. Attached Figure Description

[0041] The preferred embodiments will now be described in a clear and easy-to-understand manner, with reference to the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods.

[0042] Figure 1 This is a schematic diagram of the structure of a traction device for a shell-shaped orthodontic appliance according to an embodiment of the present invention;

[0043] Figure 2 In one embodiment Figure 1 A schematic diagram of a cross-section of a shell-shaped orthodontic appliance along line AA;

[0044] Figure 3 In another embodiment Figure 1 A schematic diagram of a cross-section of a shell-shaped orthodontic appliance along line AA;

[0045] Figure 4 This is a schematic diagram of a traction device in one embodiment;

[0046] Figure 5 This is a schematic diagram of the traction device in another embodiment;

[0047] Figure 6 For other embodiments Figure 1 A schematic diagram of a cross-section of a shell-shaped orthodontic appliance along line AA;

[0048] Figure 7 This is a schematic diagram of a traction device in another embodiment;

[0049] Figure 8 This is a schematic diagram of the traction device installation area provided in one embodiment;

[0050] Figure 9 This is a schematic diagram of assembling a traction device via an installation platform, as provided in one embodiment.

[0051] Figure 10 This is a schematic diagram of a traction device including a force-dispersing component provided in one embodiment;

[0052] Figure 11 A schematic diagram of a shell-shaped orthodontic appliance including a force-dispersing component, provided for one embodiment;

[0053] Figure 12 This is a schematic diagram of the bottom structure including a force-dispersing component provided in one embodiment;

[0054] Figure 13 A schematic diagram showing the irregular distribution of force-distributing components to the mounting base as provided in one embodiment;

[0055] Figure 14 A schematic diagram showing the regular distribution of force-distributing components to the mounting base as provided in one embodiment;

[0056] Figure 15 This is a schematic diagram of a force-dispersing component being assembled onto the inner surface of a shell-shaped orthodontic appliance, as provided in one embodiment.

[0057] In the diagram: 10. Shell-shaped orthodontic appliance; 11. Traction device installation area; 12. Installation platform; 20. Traction component; 21. Traction part; 22. Connecting part; 23. Installation part; 24. Force dispersing component; 241. Mounting surface; 242. Force dispersing sub-component; 243. Assembly part; 100. Teeth. Detailed Implementation

[0058] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0059] like Figure 1 As shown, in one embodiment, a traction device for a shell-shaped orthodontic appliance 10 is provided. The traction device includes a traction member 20, which includes a traction part 21 for traction, a connecting part 22, and a mounting part 23 provided with a force-dispersing member 24. The traction part 21 is disposed at one end of the connecting part 22, and the mounting part 23 is disposed at the other end of the connecting part 22. The traction device is fixedly connected to the shell-shaped orthodontic appliance 10 through the mounting part 23. When the traction part 21 is pulled, the mounting part 23 disperses the force generated by the traction to the shell-shaped orthodontic appliance 10 through the force-dispersing member 24.

[0060] Among them, shell-shaped orthodontic appliances are designed and manufactured using computer-aided three-dimensional reconstruction, assisted diagnostic design technology, and computer manufacturing technology. They are a series of orderly transparent movable orthodontic appliances that utilize the elastic deformation of the appliance material itself to generate rebound force, thereby correcting malocclusion. They are continuous and orderly orthodontic devices that achieve the purpose of orthodontic treatment through continuous small-range tooth movement.

[0061] A traction component is a functional accessory used to enhance the effectiveness of orthodontic treatment; it can be a traction buckle or traction hook, etc. (Reference) Figure 1 as well as Figure 2 The orthodontic appliance includes a shell-shaped dental appliance 10 and a traction component 20. The traction component 20 has a traction section 21 for suspending a traction element (not shown). The force generated by the traction element acts on the corresponding area to achieve the desired orthodontic plan. The traction element can be an elastic body such as a rubber band or a spring. The traction component 20 includes a mounting section 23 for connecting to the shell-shaped dental appliance 10. The traction section 21 and the mounting section 23 are connected by a connecting section 22, thereby transmitting the force generated when the traction section 23 is pulled to the shell-shaped dental appliance 10 through the mounting section 23. The interaction between the shell-shaped dental appliance 10 and the traction device achieves the desired orthodontic plan. Specifically, this can guide the teeth 100 from an initial position to a target orthodontic position. The initial position can be the relative position of a digital model acquired during the patient's treatment, and the target orthodontic position can be the position determined by the doctor and medical designers based on the patient's needs and intraoral condition to achieve the final orthodontic effect.

[0062] Continue to refer to Figure 1 as well as Figure 2 In one embodiment, the connecting part 22 and the mounting part 23 are integrally formed. This integral forming design not only reduces the manufacturing process and improves processing efficiency, but also ensures the stability of the connection between the connecting part 22 and the mounting part 23, thereby improving the stability of the traction device and ensuring that the traction device can provide a stable corrective force. In another embodiment, the connecting part 22 and the mounting part 23 are independently formed. For example, the connecting part 22 and the mounting part 23 can be fixedly connected, including any one of bonding, welding, or riveting. Alternatively, the connecting part 22 and the mounting part 23 can be detachably connected. The detachable connection method can improve the installation flexibility between the connecting part 22 and the mounting part 23. The corresponding model of the connecting part 22 or the mounting part 23 can be matched according to the specific orthodontic needs. By flexibly selecting the connecting part 22 or the mounting part 23, the compatibility between the two can be enhanced, thereby improving the adaptability of the orthodontic treatment and expanding the treatment range.

[0063] In actual orthodontic settings, the force generated by the traction device when applied to the shell-shaped orthodontic appliance can affect its mechanical properties. This can lead to undesirable large deformations, or even, in more severe cases, breakage. Therefore, minimizing or avoiding the impact of this traction force on the shell-shaped orthodontic appliance is crucial for optimal treatment outcomes.

[0064] In one embodiment, reference Figure 2 as well as Figure 3 The force-dispersing component 24 is integrally formed with the traction device at one end of the connecting part 22, and in this case, the force-dispersing component 24 also serves as the mounting part 23. That is, the force-dispersing function can be achieved through the mounting part. Specifically, one end of the mounting part (i.e., the force-dispersing component) is directly connected to the connecting part 22, and the other end can be directly connected to the shell-shaped orthodontic appliance 10 to disperse the force generated when the traction device is pulled to the shell-shaped orthodontic appliance. In the above embodiment, the force-dispersing component and the traction device are directly integrally formed. This integral design not only reduces the manufacturing process and improves processing efficiency, but also ensures the stability of the traction device.

[0065] Continue to refer to Figure 2 In one embodiment, the force-dispersing component, i.e., the mounting part 23, is generally elongated, and the elongation can be rectangular, elliptical, or oblong, etc., without limitation. In one embodiment, the mounting surface of the force-dispersing component is fixedly connected to the shell-shaped orthodontic appliance to form a connecting surface. In each connecting region of the connecting surface, the area of ​​the connecting region is proportional to the magnitude of the force generated by the traction of the shell-shaped orthodontic appliance at the connecting region. That is, the shape of the mounting surface in different regions is related to the magnitude of the traction force received in that region; specifically, the area corresponding to the greater the influence of the traction force is, the larger the area.

[0066] refer to Figure 4 In one embodiment, when the force-dispersing member 24 is elliptical, the end of the connecting portion 22 opposite to the traction portion 21 is connected to the middle of the force-dispersing member 24. While satisfying the force-dispersing function, the elliptical-shaped force-dispersing member is more compact, improving the user's comfort when wearing the shell-shaped orthodontic appliance. Furthermore, by connecting the end of the connecting portion 22 opposite to the traction portion 21 to the middle of the force-dispersing member 24, the force generated during traction can be evenly distributed across the surface of the shell-shaped orthodontic appliance, preventing excessive force concentration at the bonding points and avoiding severe deformation or even breakage. (Reference) Figure 3 or Figure 5When the force-dispersing component 24 is elongated like a rectangle, the end of the connecting part 22 opposite to the traction part 21 is connected to the end of the force-dispersing component 24. By connecting one end of the connecting part 22 to the elongated end, the torque at different locations can be flexibly adjusted, thereby flexibly adjusting the orthodontic force at different locations. Furthermore, connecting the end of the connecting part 22 opposite to the traction part 21 to the end of the force-dispersing component 24 can also reduce the distance between the two traction devices, thereby enabling the use of a smaller traction device under the same orthodontic force requirements, reducing the foreign body sensation in the oral cavity, and improving wearing comfort.

[0067] In one embodiment, the force-dispersing member is positioned in the same direction as the force applied by the traction member on the shell-shaped orthodontic appliance, such as... Figure 3 As shown, when the applied force is directed to the lower right, the length direction of the force-dispersing component is consistent with the applied force direction. In this case, to separate the force-dispersing component from the shell-shaped orthodontic appliance, a force with a certain angle to the force-dispersing component needs to be applied. This means that it is not easy to separate the force-dispersing component from the shell-shaped orthodontic appliance at this time, thus increasing the stability of the connection between the force-dispersing component and the shell-shaped orthodontic appliance. It should be noted that in other embodiments, the position of the end of the connecting part 22 opposite to the traction part 21 connected to the force-dispersing component 24 is not limited; it can be at the end, middle, or any other position, specifically determined according to different orthodontic plans.

[0068] refer to Figure 6 as well as Figure 7 In one embodiment, the force-dispersing component 24 and the mounting part 23 are designed separately. The force-dispersing component 24 is located at the bottom of the mounting part 23, and the mounting part 23 is fixedly connected to the force-dispersing component. This fixed connection can be achieved through bonding, welding, or riveting. The other end of the force-dispersing component 24 is fixedly connected to the shell-shaped orthodontic appliance 10. In the above embodiment, the force-dispersing component and the mounting part are designed separately, allowing for the selection of the appropriate force-dispersing component and mounting part according to different orthodontic needs, improving the adaptability of different components and enhancing the orthodontic effect. By molding them independently, the adaptability of mounting parts of different specifications or models to the traction device can be achieved. This allows for the selection of the appropriate specification of mounting part or force-dispersing component according to specific orthodontic needs, ensuring not only the traction effect of the traction device but also achieving optimal matching between the mounting part and the shell-shaped orthodontic appliance to minimize undesirable deformation of the appliance, ultimately improving the orthodontic effect and expanding the scope of orthodontic application. Similarly, when the force-dispersing component and the mounting part are designed separately, the mounting part is connected to the middle or end of the force-dispersing component.

[0069] Continue to refer to Figure 6 as well as Figure 7In one embodiment, the mounting part 23 and the force dispersing member 24 are fixedly connected by adhesive bonding. A first adhesive area is provided on the mounting surface 231 of the mounting part, and a second adhesive area is provided on the force dispersing member 24. The first adhesive area and the second adhesive area can be bonded together. Adhesive bonding has the advantages of simple structure, relatively low cost, and ease of implementation. Furthermore, adhesive bonding does not require opening the shell-shaped orthodontic appliance, thus not affecting the overall structure of the shell-shaped orthodontic appliance and therefore not affecting its orthodontic effect.

[0070] In the above embodiments, by providing a force-dispersing member on the mounting portion, the force-dispersing member has the ability to disperse the force generated when the traction portion is pulled to the shell-shaped orthodontic appliance connected thereto. Therefore, the undesirable effects of the traction force generated when pulled on the shell-shaped orthodontic appliance can be eliminated or partially eliminated, such as eliminating or partially eliminating the deformation effect on the shell-shaped orthodontic appliance, thus avoiding the occurrence of breakage of the shell-shaped orthodontic appliance during the orthodontic treatment. In one embodiment, the force-dispersing member has a certain thickness, thereby improving the strength of the force-dispersing member. When the traction portion is pulled, the traction force generated is dispersed to the shell-shaped orthodontic appliance body through the force-dispersing member.

[0071] like Figures 6 to 6 As shown, in one embodiment, the force dispersing member 24 has a mounting surface 241 that can cover the corresponding traction device mounting area 11 on the shell-shaped orthodontic appliance 10. The force dispersing member 24 is fixedly connected to the shell-shaped orthodontic appliance 10 through the mounting surface 241. The minimum area covered by the mounting surface 241 of the force dispersing member 24 is larger than the conventional mounting area. The conventional mounting area is 1.0 to 3.0 times the minimum mounting area required to meet the traction force. When the traction device is a standard part, the area of ​​the conventional mounting surface is the same as the area of ​​the mounting surface of the standard part.

[0072] like Figures 1 to 7 As shown, the shell-shaped orthodontic appliance 10 includes several cavities for accommodating maxillary or mandibular teeth, and a traction device mounting area 11 is provided on the cavity for mounting a traction device. The interaction between the traction device mounting area 11 and the mounting surface 241 of the traction device enables the shell-shaped orthodontic appliance 10 and the traction device to generate greater retention force and apply force more fully. This allows the force generated by the deformation of the shell-shaped orthodontic appliance 10 to be better transmitted to achieve the expected orthodontic plan and the target orthodontic effect. For example, the force can be better transmitted to the teeth 100 to better achieve the movement of the teeth 100. Therefore, it can improve the orthodontic effect and shorten the orthodontic cycle.

[0073] The standard installation area is determined by the required traction force. For example, the standard installation area can be a multiple of the minimum installation area required to meet the traction force. In one embodiment, the standard installation area is 1.0 to 3.0 times the minimum installation area required to meet the traction force. The minimum installation area required to meet the traction force is determined based on the material parameters, size parameters, shape parameters, fixing connection method, traction force, and shape parameters of the mounting surface of the traction device. The material parameters of the traction device include physical parameters such as density, Poisson's ratio, elastic modulus, yield strength, thermal conductivity, specific heat capacity, coefficient of linear expansion, and viscoelastic parameters. Size parameters include the size of the traction device, and fixing connection methods include bonding, snap-fitting, and riveting. The shape parameters of the mounting surface include circular, rectangular, or elliptical shapes. In the above embodiment, the minimum installation area is determined based on the multi-dimensional parameters of the traction device, ensuring that the minimum installation area meets the traction requirements of the traction device. Furthermore, the minimum installation area can be determined based on different correction needs, guaranteeing the accuracy and rationality of the minimum installation area.

[0074] In one embodiment, the minimum area covered by the mounting surface of the force-dispersing component is 1.01 to 3.0 times the conventional mounting area. Since the conventional mounting area is 1.0 to 3.0 times the minimum mounting area required to meet traction force, the minimum area covered by the mounting surface of the force-dispersing component is 1.01 to 3.0 times the conventional mounting area; that is, the minimum area covered by the mounting surface of the force-dispersing component is 1.01 to 9.0 times the minimum mounting area. It should be noted that the area covered by the mounting surface of the force-dispersing component cannot exceed the cavity area of ​​one tooth in the shell-shaped orthodontic appliance. In the above embodiment, the coverage area of ​​the mounting surface of the force-dispersing component is set according to the minimum mounting area and the conventional mounting area to ensure that the force-dispersing component not only meets the traction requirements but also reasonably disperses the force generated during traction onto the shell-shaped orthodontic appliance. Furthermore, by setting a relatively large multiple range (1.01-9 times), the optimal multiple can be reasonably selected according to different orthodontic needs, thereby improving the product's adaptability and flexibility. In one specific embodiment, the minimum area covered by the mounting surface of the force-dispersing component is twice the conventional mounting area. The conventional mounting area is three times the minimum mounting area required to meet the traction force. Therefore, the minimum area covered by the mounting surface of the force-dispersing component is 2*3=6 times the minimum mounting area.

[0075] In the above embodiments, since the area of ​​the mounting surface of the force dispersing component is larger than the conventional mounting area, and the force generated during traction is dispersed to the shell-shaped orthodontic appliance by utilizing the mounting surface with a larger area, the force dispersion is achieved by expanding the contact area, thereby avoiding excessive force concentration on the shell-shaped orthodontic appliance during traction and solving the problem of breakage of the shell-shaped orthodontic appliance.

[0076] like Figure 8 As shown, in one embodiment, the traction device mounting area 11 is a regular or basically regular area. Specifically, the traction device mounting area 11 can be a circular or basically circular area, an elliptical or basically elliptical area, a rectangular or basically rectangular area, etc. It should be noted that in another embodiment, the traction device mounting area 11 can also be an irregular area, which is not limited here. In the above embodiments, the shape of the traction device mounting area 11 can be adaptively set according to different orthodontic needs, improving the rationality of the traction mounting area 11 setting. By cooperating with the mounting surface 24 of the traction device according to a reasonable traction mounting area 11, the force generated when the traction part 21 is pulled can be better distributed onto the shell-shaped orthodontic appliance 10, thereby improving the orthodontic effect of the shell-shaped orthodontic appliance 10 and shortening the treatment cycle.

[0077] refer to Figures 7 to 8 In one embodiment, the traction device mounting area 11 is fixedly connected to the mounting surface 241. Specifically, by selecting an adhesive area in the traction device mounting area 11 of the shell-shaped orthodontic appliance and applying an intraoral adhesive, the mounting surface 241 of the adhesive mounting part 24 can be used to fix and bond the adhesive. The adhesive area can be one, two, or more selected areas with a certain geometric shape on the shell-shaped orthodontic appliance 10, such as regular circular areas, square areas, etc., or irregular geometric shapes; there is no limitation here. Providing multiple adhesive areas can improve the stability of the bond.

[0078] like Figures 1 to 8 As shown, in one embodiment, the force-dispersing member 24 includes a mounting base, through which the force-dispersing member is directly fixedly connected to the shell-shaped orthodontic appliance. The area of ​​the mounting base is larger than the conventional mounting area. In a specific embodiment, the mounting base can be a mounting surface 241. Furthermore, since the area of ​​the mounting base is larger than the conventional mounting area, the contact area between the force-dispersing member 24 and the shell-shaped orthodontic appliance 10 can be increased. This allows the force generated when the traction part is pulled to be dispersed onto the shell-shaped orthodontic appliance 10 through a larger contact area, reducing the local force exerted on the shell-shaped orthodontic appliance 10 during traction and preventing local deformation or even breakage of the shell-shaped orthodontic appliance 10 due to excessive local force.

[0079] like Figures 1 to 8As shown, in one embodiment, the mounting surface 241 of the force-dispersing member 24 is fixedly connected to the shell-shaped orthodontic appliance 10 by any one of the following methods: bonding, welding, or riveting. Bonding has the advantages of simple structure, relatively low cost, and ease of implementation. Furthermore, bonding does not require opening the shell-shaped orthodontic appliance, thus not affecting the overall structure of the appliance and consequently not impacting its orthodontic effect.

[0080] like Figure 12 As shown, the side of the force-dispersing member 24 facing the shell-shaped orthodontic appliance can also be made into a rough structure to increase friction and achieve a more stable connection between the force-dispersing member 24 and the shell-shaped orthodontic appliance.

[0081] In one embodiment, the mounting portion conforms to the contour of the traction device mounting area of ​​the shell-shaped orthodontic appliance. By providing a contour-matching structure, the contact area between the two can be increased to maximize force distribution. In some embodiments, reference is made to... Figures 1 to 7 The mounting base 241 and the traction device mounting area 11 are mutually matching curved surfaces, and the curvature of the mounting base matches the curvature of the traction device mounting area. The curved surface structure increases the contact area between the mounting base and the traction device mounting area, thus increasing the bonding area and improving the bonding stability of the shell-shaped orthodontic appliance 10 and the force-dispersing member 24. In some embodiments, the mounting base and the traction device mounting area 11 are mutually matching planes. The structure of the matching planes makes the connection, such as bonding, between the shell-shaped orthodontic appliance and the force-dispersing member easier and more stable. In this embodiment, because the contours of the mounting base and the traction device mounting area of ​​the shell-shaped orthodontic appliance match, a more snug connection can be achieved between the mounting base and the traction device mounting area, thereby increasing the effective connection area between the mounting base and the traction device mounting area. The larger effective mounting area allows for the dispersion of the force generated during traction to the shell-shaped orthodontic appliance, solving the problem of deformation or breakage caused by excessive force concentration on the shell-shaped orthodontic appliance.

[0082] In some embodiments, the mounting base and the traction device mounting area have structures that enhance stability and fixation. Specifically, the mounting base or the traction device mounting area may have a structure with a frosted surface, a textured surface, or a surface with raised dots, etc. Such structures increase the specific surface area of ​​the mounting base and the traction device mounting area, thereby allowing the adhesive to adhere stably to the surface of the mounting base or the traction device mounting area, thus improving the connection stability of the shell-shaped orthodontic appliance and the force-dispersing component. Of course, the bonding area can also be configured with other structures that enhance stability and fixation, which will not be elaborated further.

[0083] like Figure 9As shown, a mounting platform 12 is provided on the shell-shaped orthodontic appliance. The shape of the mounting part matches the contour of the mounting platform 12, and the mounting part is fixedly connected to the shell-shaped orthodontic appliance via the mounting platform 12. In some embodiments, considering that the surface of the shell-shaped orthodontic appliance is a non-planar structure, the adhesion between the shell-shaped orthodontic appliance and the force-dispersing component is unstable. Therefore, in order to improve the stability of the adhesion between the mounting base and the traction device mounting area, the surface of the shell-shaped orthodontic appliance in this embodiment is provided with a mounting platform 12, which can be a boss structure. The traction device mounting area 11 is provided on the mounting platform 12, and the shape of the mounting base matches the contour of the boss structure. The above-described platform structure solves the problem of adhesion stability caused by the uneven surface of the shell-shaped orthodontic appliance 10 or the mounting part 23. The platform structure enables the traction device mounting area 11 to re-establish a stable contact connection with the mounting base, thereby improving the adhesion stability. Furthermore, since the mounting part matches the contour of the traction device mounting area of ​​the shell-shaped orthodontic appliance, the mounting part and the traction device mounting area can be connected more closely, thereby increasing the effective connection area between the mounting part and the traction device mounting area. The larger effective mounting area can be used to distribute the force generated during traction to the shell-shaped orthodontic appliance, solving the problem of deformation or breakage caused by excessive force concentration on the shell-shaped orthodontic appliance during traction.

[0084] In this embodiment, the shell-shaped orthodontic appliance is fixedly connected to the mounting part by adhesive bonding. Different adhesives can provide varying bond strengths, allowing for targeted selection of intraoral adhesives. Therefore, the bonding method in this embodiment can be either a non-removable or detachable fixed connection, and can be designed according to actual clinical needs.

[0085] like Figure 10 as well as Figure 11As shown, in one embodiment, the force-dispersing member 24 includes a mounting base and a force-dispersing sub-member 242. One end of the force-dispersing sub-member 242 is fixed to the side of the mounting base facing the shell-shaped orthodontic appliance, and the other end of the force-dispersing sub-member is used for fixed connection with the shell-shaped orthodontic appliance 10. Specifically, one end of the force-dispersing sub-member 242 is fixed to the side of the mounting base facing the shell-shaped orthodontic appliance, and the other end of the force-dispersing sub-member 242 is used for fixed connection with the shell-shaped orthodontic appliance 10. The sum of the areas where the force-dispersing sub-member 242 is fixedly connected to the shell-shaped orthodontic appliance 10 is greater than the conventional mounting area. Because the sum of the areas where the force-dispersing sub-member 242 is fixedly connected to the shell-shaped orthodontic appliance 10 is greater than the conventional mounting area, the force-dispersing sub-member 242 can effectively disperse the force generated during traction to the shell-shaped orthodontic appliance. Furthermore, by using one or more force-dispersing sub-components 242 to disperse the force generated when the traction part is pulled to the shell-shaped orthodontic appliance 10, it is equivalent to dispersing the mounting base in a surface manner. Moreover, the number of force-dispersing sub-components can be adaptively determined according to the magnitude of the force, thereby achieving a reasonable distribution of the force-dispersing sub-components and achieving the best and most reasonable force dispersion effect.

[0086] In the above embodiments, by setting force-dispersing components and connecting them to the shell-shaped orthodontic appliance, the force generated during traction is dispersed to the shell-shaped orthodontic appliance. Since the number of force-dispersing components can be flexibly adjusted, the technical effect of flexibly adjusting the force dispersed on the surface of the shell-shaped orthodontic appliance is achieved. The combined action of multiple force-dispersing components disperses the force generated during traction to the shell-shaped orthodontic appliance. Furthermore, the sum of the areas where multiple force-dispersing components are fixedly connected to the shell-shaped orthodontic appliance is greater than the conventional installation area. Therefore, compared to the conventional installation area, multiple force-dispersing components can better disperse the force generated during traction to the shell-shaped orthodontic appliance, solving the problem of deformation or breakage caused by excessive force concentration on the shell-shaped orthodontic appliance.

[0087] Continue to refer to Figure 10 In one embodiment, the force-dispersing component 242 comprises a plurality of connectors, which are integrally formed with the mounting base or fixedly connected to the side of the mounting base facing the shell-shaped orthodontic appliance 10. In the above embodiment, the integral forming of the force-dispersing component 242 with the mounting base can improve the stability of the connection between the two, reduce the process flow, and thus improve the manufacturing efficiency of the traction component.

[0088] In another embodiment, the force-dispersing component comprises a plurality of connectors, each independently formed from the mounting base. The connectors are fixedly connected to the side of the mounting base facing the shell-shaped orthodontic appliance. In the above embodiments, the force-dispersing component and the mounting base are independently formed and assembled by a fixed connection, which improves assembly flexibility. In different orthodontic scenarios, the required force-dispersing components can be rationally selected according to specific orthodontic needs. For example, the corresponding model and quantity of force-dispersing components can be adaptively selected, thereby achieving the best force-dispersing effect through the optimal assembly scheme, ultimately achieving the best orthodontic result.

[0089] refer to Figure 11 The force-dispersing component 242 comprises a plurality of connecting bodies, each a cylinder. One end of the cylinder is fixed to the side of the mounting base facing the shell-shaped orthodontic appliance, and the other end is used for fixed connection with the shell-shaped orthodontic appliance. Specifically, when the force-dispersing component is integrally formed with the mounting base, the connecting body protrudes outward from the side of the mounting base facing the shell-shaped orthodontic appliance. When the force-dispersing component is an independent component, the force-dispersing component can be a component with different models and shapes, thus allowing for adaptive matching of the corresponding type of force-dispersing component according to different orthodontic needs. More specifically, the force-dispersing component 242 can be a cylinder, specifically a cylindrical or prism.

[0090] In one embodiment, the force-distributing components are regularly or irregularly distributed on the side of the mounting base facing the shell-shaped orthodontic appliance, so that when the traction part is pulled, the force-distributing components distribute the force generated by the traction to the shell-shaped orthodontic appliance substantially evenly. For example... Figure 13 As shown, when the mounting base of the force-distributing component 24 is elliptical, the force-distributing components can be irregularly distributed on the side of the mounting base facing the shell-shaped orthodontic appliance. For example... Figure 14 As shown, when the mounting base of the force-dispersing component 24 is rectangular, the force-dispersing components can be regularly distributed on the side of the mounting base facing the shell-shaped orthodontic appliance. In this embodiment, the distribution of the force-dispersing components on the mounting base can be flexibly set or adjusted according to the orthodontic needs, thereby achieving a more reasonable dispersion of the force generated during traction to the shell-shaped orthodontic appliance, solving the problem of deformation or breakage caused by excessive force concentration on the shell-shaped orthodontic appliance.

[0091] This application also provides a shell-shaped orthodontic appliance, including an appliance body and a traction device for the shell-shaped orthodontic appliance as described in any of the above embodiments, wherein the traction device is fixedly connected to the appliance body.

[0092] In one embodiment, the orthodontic body includes a traction device mounting area, the stiffness of which is greater than the stiffness of other areas of the orthodontic body other than the traction device mounting area.

[0093] refer to Figure 8 In one embodiment, the stiffness of the traction device mounting area 11 is greater than the stiffness of other non-traction device mounting areas. In this embodiment, by setting the stiffness of the traction device mounting area to be greater than the stiffness of other areas on the orthodontic appliance body excluding the traction device mounting area, the deformation at the traction device mounting area can be reduced when traction force is generated. This ensures that the traction device mounting area and the mounting part are always in a close fit, guaranteeing the effective contact area between them. Ultimately, this disperses the traction force generated during traction to the shell-shaped orthodontic appliance, solving the problem of undesirable deformation or breakage of the shell-shaped orthodontic appliance.

[0094] In one embodiment, the number of diaphragm layers in the traction device mounting area is greater than the number of diaphragm layers in other areas of the orthodontic appliance body besides the traction device mounting area. In this embodiment, by increasing the number of diaphragm layers at the traction device mounting area, the rigidity at that location is enhanced, thereby avoiding or reducing undesirable deformation of that area when traction is applied. This increases the effective contact area between the traction device mounting area and the mounting part, distributing the force generated during traction to the shell-shaped orthodontic appliance, thus solving the problem of undesirable deformation or breakage of the shell-shaped orthodontic appliance.

[0095] In one embodiment, the elastic modulus of the outermost diaphragm in the traction device mounting area is greater than the elastic modulus of the outermost diaphragm in other areas of the orthodontic appliance body besides the traction device mounting area. In this embodiment, by setting the elastic modulus of the outermost diaphragm at the traction device mounting area to be greater than the elastic modulus of the outermost diaphragm in other areas of the orthodontic appliance body, the stiffness at the traction device mounting area can be increased, thereby avoiding or reducing undesirable deformation of this area when traction is applied. This increases the effective contact area between the traction device mounting area and the mounting part, distributing the force generated during traction to the shell-shaped orthodontic appliance, thus solving the problem of undesirable deformation or breakage of the shell-shaped orthodontic appliance.

[0096] refer to Figure 2 as well as Figure 8In one embodiment, the diaphragm thickness in the traction device mounting area is greater than the diaphragm thickness in other areas of the orthodontic appliance body besides the traction device mounting area. In some embodiments of the present invention, the shell-shaped orthodontic appliance 10 has a non-uniform thickness structure. Specifically, the thickness of the traction device mounting area 11 on the shell-shaped orthodontic appliance 10 is preferably greater than the thickness of the shell-shaped orthodontic appliance 10 excluding the traction device mounting area 11, for example, the thickness of the traction device mounting area 11 is preferably 0.5-3.0 mm. By increasing the local thickness of the traction device mounting area 11, the strength of the traction device mounting area 11 and the contact area with the mounting part 23 of the traction device 20 can be increased. When the traction device mounting area 11 transmits the force generated during traction, it can not only prevent the deformation of the traction device mounting area 11, but also provide sufficient contact area when the traction device mounting area 11 and the traction device 20 come into contact with each other. This reduces the traction force generated during traction and can be distributed to the shell-shaped orthodontic appliance. At the same time, by increasing the thickness, the unwanted deformation of the shell-shaped orthodontic appliance can be eliminated or partially eliminated, and sufficient force can be provided to gradually change the tooth 100 from the initial position to the target orthodontic position.

[0097] In the above embodiments, the diaphragm thickness in the traction device mounting area is greater than the diaphragm thickness in other non-traction mounting areas. Since a larger diaphragm thickness results in less elastic deformation of the shell-shaped orthodontic appliance, increasing the diaphragm thickness in the traction device mounting area can improve the stiffness of the shell-shaped orthodontic appliance in the local area (traction device mounting area), thereby reducing deformation in the local area. Specifically, by increasing the diaphragm thickness at the traction device mounting area, the elasticity at that location is reduced and the stiffness at that location is enhanced, thereby avoiding or reducing undesirable deformation when that area is pulled, increasing the effective contact area between the traction device mounting area and the mounting part, and distributing the force generated during traction to the shell-shaped orthodontic appliance, thus solving the problem of undesirable deformation or breakage of the shell-shaped orthodontic appliance.

[0098] More preferably, the elastic modulus of the diaphragm material in the traction device mounting area is greater than that of the diaphragm material in other areas of the orthodontic appliance body besides the traction device mounting area. Specifically, the elastic modulus of the diaphragm material in the traction device mounting area is greater than that of the diaphragm material in other non-traction mounting areas. Since a larger elastic modulus makes the shell-shaped orthodontic appliance less prone to elastic deformation, it increases the strength of the traction mounting area, reduces the impact of the force generated when the traction device is pulled on the traction mounting area, and thus improves the orthodontic effect. Therefore, increasing the material stiffness of the traction device mounting area can increase the stiffness of the shell-shaped orthodontic appliance in a local area (traction device mounting area), thereby reducing deformation in that local area. In the above embodiments, by setting the elastic modulus of the diaphragm material in the traction device mounting area to be greater than that of the elastic modulus of the diaphragm material in other areas of the orthodontic appliance body, the stiffness at the traction device mounting area can be improved, thereby avoiding or reducing undesirable deformation of the area when it is pulled, increasing the effective contact area between the traction device mounting area and the mounting part, and dispersing the force generated during traction to the shell-shaped orthodontic appliance, so as to solve the problem of undesirable deformation or breakage of the shell-shaped orthodontic appliance.

[0099] For details, please refer to the following: Figure 2 , Figure 3 , Figure 6 , Figure 9 as well as Figure 11 As shown, in one embodiment, the traction device mounting area is located on the outer surface of the orthodontic appliance body, and the force dispersing member is connected to the outer surface. When the traction part is pulled, the mounting part disperses the force generated by the traction to the shell-shaped orthodontic appliance through the force dispersing member.

[0100] For details, please refer to the following: Figure 15 In one embodiment, the traction device mounting area is located on the inner surface of the orthodontic appliance body, and the force dispersing member is connected to the inner surface. When the traction part is pulled and generates traction force, the traction force is dispersed to the shell-shaped orthodontic appliance through the traction force dispersing structure. Specifically, an opening can be pre-fabricated on the shell-shaped orthodontic appliance, and the assembly part 243 connects the connecting part 22 and the force dispersing member 24 through the pre-fabricated opening. The connection method may include threaded connection, riveting, welding, etc., and is not limited here.

[0101] This application also provides a shell-shaped orthodontic appliance system, including a plurality of shell-shaped orthodontic appliances, wherein at least one of the plurality of shell-shaped orthodontic appliances is the shell-shaped orthodontic appliance described in any of the above embodiments.

[0102] This application also provides a shell-shaped orthodontic appliance kit, including a maxillary shell-shaped orthodontic appliance and a mandibular shell-shaped orthodontic appliance. The maxillary shell-shaped orthodontic appliance includes an appliance body for covering at least a portion of the maxillary teeth, and the mandibular shell-shaped orthodontic appliance includes an appliance body for covering at least a portion of the mandibular teeth. The maxillary shell-shaped orthodontic appliance and / or the mandibular shell-shaped orthodontic appliance are shell-shaped orthodontic appliances as described in any of the above embodiments.

[0103] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A traction device for a shell-like tooth aligner, characterized in that, The traction device comprises a traction member, which comprises a traction part for traction, a connecting part and a mounting part provided with a force dispersion member, the traction part is arranged at one end of the connecting part, the mounting part is arranged at the other end of the connecting part, the traction device is fixedly connected with the shell-shaped tooth aligner through the mounting part, and when the traction part is pulled, the mounting part disperses the force generated by traction to the shell-shaped tooth aligner through the force dispersion member. The force dispersion member has a mounting surface capable of covering a corresponding traction device mounting area arranged on the shell-shaped tooth aligner, and the force dispersion member is fixedly connected with the shell-shaped tooth aligner through the mounting surface; and the force dispersion member is in the shape of a long strip as a whole.

2. The retraction device for a shell-like dental aligner of claim 1, wherein, The minimum area covered by the mounting surface of the force dispersion member is greater than the conventional mounting area, which is 1.0-3.0 times the minimum mounting area required by the traction force.

3. The retraction device for a shell-like dental aligner of claim 2, wherein, When the traction device is a standard part, the area of the conventional mounting surface is the area of the mounting surface of the standard part.

4. The retraction device for a shell-like dental aligner of claim 2, wherein, The minimum area covered by the mounting surface of the force dispersion member is 1.01-3.0 times the conventional mounting area.

5. The retraction device for a shell-like dental aligner of claim 2, wherein, The minimum mounting area required by the traction force is determined based on the material parameters of the traction device, the size parameters of the traction device, the shape parameters of the traction device, the form of fixed connection, the traction force and the shape parameters of the mounting surface of the force dispersion member.

6. The retraction device for a shell-like dental aligner according to any one of claims 2 to 5, wherein The force dispersion member is integrally formed at one end of the connecting part with the traction device, and the force dispersion member is the mounting part.

7. The retraction device for a shell-like dental aligner according to any one of claims 2 to 5, wherein The force dispersion member and the mounting part are designed as a whole, the mounting part is fixedly connected with the force dispersion member and is fixedly connected with the shell-shaped tooth aligner through the force dispersion member.

8. The retraction device for a shell-like dental aligner of claim 2, wherein, The force dispersion member comprises a mounting base, and the force dispersion member is directly fixedly connected with the shell-shaped tooth aligner through the mounting base.

9. The retraction device for a shell-like dental aligner of claim 8, wherein, The area of the mounting base is greater than the conventional mounting area.

10. The retraction device for a shell-like dental aligner of claim 2, wherein, The force dispersion member comprises a mounting base and a force dispersion sub-member, one end of the force dispersion sub-member is fixed to the side of the mounting base facing the shell-shaped tooth aligner, and the other end of the force dispersion sub-member is used for fixedly connecting with the shell-shaped tooth aligner.

11. The retraction device for a shell-like dental aligner of claim 10, wherein, The sum of the areas at which the force dispersion sub-member is fixedly connected with the shell-shaped tooth aligner is greater than the conventional mounting area.

12. The retraction device for a shell-like dental aligner of claim 11, wherein, The force dispersion sub-member comprises a plurality of connecting bodies, and the force dispersion sub-member is integrally formed with the mounting base or the connecting bodies are fixedly connected to the side of the mounting base facing the shell-shaped tooth aligner.

13. The retraction device for a shell-like dental aligner of claim 12, wherein, When the force dispersion sub-member is integrally formed with the mounting base, the connecting bodies are formed by outward protruding from the side of the mounting base facing the shell-shaped tooth aligner.

14. The retraction device for a shell-like dental aligner of claim 12, wherein, The connecting body is a column, one end of the column is fixed to the side of the mounting base facing the shell-shaped tooth aligner, and the other end of the column is used for fixedly connecting with the shell-shaped tooth aligner.

15. The retraction device for a shell-like dental aligner of claim 14, wherein, The column is a cylinder or a prism.

16. The retraction device for a shell-like dental aligner of claim 10, wherein, The force dispersion sub-member is regularly or irregularly distributed on the surface of the mounting base facing the shell-shaped dental aligner, so that when the traction part is being pulled, the force dispersion sub-member disperses the force generated by the pulling to the shell-shaped dental aligner evenly.

17. The retraction device for a shell-like dental aligner of claim 1, wherein, The force dispersion member is integrally formed with the traction device at one end of the connecting part, and the other end of the connecting part opposite to the traction part is connected to the middle or end of the force dispersion member.

18. The retraction device for a shell-like dental aligner of claim 1, wherein, The force dispersion member and the mounting part are designed as a whole, and the mounting part is connected to the middle or end of the force dispersion member.

19. The retraction device for a shell-like dental aligner of claim 2, wherein, The mounting surface of the force dispersion member is fixedly connected to the shell-shaped dental aligner by any one of bonding, welding and riveting.

20. The retraction device for a shell-like dental aligner of claim 2, wherein, The mounting part matches the contour of the traction device mounting area of the shell-shaped dental aligner.

21. The retraction device for a shell-like dental aligner of claim 19, wherein, An installation platform is arranged on the shell-shaped dental aligner, the contour of the mounting surface of the mounting part facing the shell-shaped dental aligner matches the contour of the mounting surface of the installation platform, and the mounting part is fixedly connected to the shell-shaped dental aligner through the installation platform.

22. A shell-like dental aligner characterized by, The traction device for the shell-shaped dental aligner as claimed in any one of claims 1 to 21 is fixedly connected to the aligner body.

23. The shell-like dental aligner of claim 22, wherein, The aligner body comprises a traction device mounting area, and the rigidity of the traction device mounting area is greater than the rigidity of other areas of the aligner body except the traction device mounting area.

24. The shell-like dental aligner of claim 23, wherein, The elastic modulus of the membrane material of the traction device mounting area is greater than the elastic modulus of the membrane material of other areas of the aligner body except the traction device mounting area.

25. The shell-like dental aligner of claim 23, wherein, The number of layers of the membrane of the traction device mounting area is greater than the number of layers of the membrane of other areas of the aligner body except the traction device mounting area.

26. The shell-like dental aligner of claim 25, wherein, The elastic modulus of the outermost membrane of the traction device mounting area is greater than the elastic modulus of the outermost membrane of other areas of the aligner body except the traction device mounting area.

27. The shell-like dental aligner of claim 23, wherein, The membrane thickness of the traction device mounting area is greater than the membrane thickness of other areas of the aligner body except the traction device mounting area.

28. The shell-like dental aligner of claim 22, wherein, The traction device mounting area is arranged on the outer surface of the aligner body, and the force dispersion member is connected to the outer surface, wherein when the traction part is being pulled, the mounting part disperses the pulling force to the shell-shaped dental aligner through the force dispersion member.

29. The shell-like dental aligner of claim 22, wherein, The traction device mounting area is arranged on the inner surface of the aligner body, and the force dispersion member is connected to the inner surface, wherein when the traction part is being pulled and generating a pulling force, the pulling force is dispersed to the shell-shaped dental aligner through the pulling force dispersion structure.

30. A shell-like tooth aligner system, characterized by, The plurality of shell-shaped dental aligners comprises at least one shell-shaped dental aligner as claimed in any one of claims 22 to 29.

31. A shell aligner kit comprising an upper shell aligner and a lower shell aligner, the upper shell aligner comprising an aligner body for wrapping around at least a portion of the upper teeth and the lower shell aligner comprising an aligner body for wrapping around at least a portion of the lower teeth, characterized in that, The upper shell-shaped dental aligner and / or the lower shell-shaped dental aligner is a shell-shaped dental aligner as claimed in any one of claims 22 to 29.

Images