A rear-end adjustable induction appliance, correction set and correction system

Abstract

The present application provides an induction appliance, a correction set and a correction system with an adjustable rear end, including an appliance front body of an integrated structure for accommodating the occlusion of upper and lower teeth and an appliance rear body for adjusting the occlusion of molars, the appliance front body including tooth guide grooves, breathing holes and receiving grooves acting on the upper and lower teeth respectively, the receiving groove is an open groove located in the middle of the end of the front occlusal pad, the appliance rear body includes a posterior occlusal pad, a buccal back stopper, a lingual side stopper and a connecting pad, wherein the length and thickness of the posterior occlusal pad have a variety of size specifications, and the appliance front body and the appliance rear body are detachably connected through the matching receiving grooves and connecting pads. Through the present application, the appliance front body or the appliance rear body can be selected to be replaced according to the correction needs, which has the advantages of simple operation, economy and practicality.

Description

Technical Field

[0001] The present application relates to the technical field of tooth correction and orthodontics, and in particular to an induction appliance with adjustable rear end, a correction set and a correction system. Background Art

[0002] There are two main types of orthodontic appliances for early malocclusion in children's growth and development stage. One is a fixed appliance designed and made of traditional hard materials. Among them, fixed appliances mostly use wire brackets. It is difficult to maintain oral hygiene during wearing, which can easily lead to adverse consequences. In addition, the correction force is large and the wearing comfort is poor. Therefore, children often refuse to wear them. The other is a removable appliance that can be removed freely, such as bracketless invisible braces and silicone induced braces. Among them, bracketless invisible braces are suitable for a limited number of people. Since children's teeth are not fully erupted during the tooth replacement period, the compliance of bracketless invisible braces is poor. Silicone induced braces use biomechanical mechanisms to slowly displace teeth in the alveolar bone, so that the misplaced teeth become neatly arranged and the abnormal occlusion relationship is adjusted to normal. It has a biomechanical mechanism and scientific background, and the correction force is gentle. Therefore, it has become the first choice for children's dental orthodontic devices.

[0003] However, since silicone induction appliances are corrective devices introduced from abroad, they are made according to the dental arch development data of foreign populations and are not suitable for the dental arch morphology of Chinese children. The main problem is that the rear end of the appliance cannot be adjusted, especially the rear end length cannot be adjusted. Doctors often need to trim and adjust it to a size suitable for children, which requires a high level of technical skills from doctors and increases their time and technical costs. In addition, the thickness of the occlusal pad at the rear end of the silicone induction appliance cannot be adjusted, thereby being unable to control the vertical development of the front and back teeth. In modern society, food is becoming increasingly refined. If children's occlusal and chewing function training is insufficient, it can easily lead to poor development of the jaw and alveolar bone.

[0004] Therefore, based on the above problems, there is a need for an induced orthodontic appliance that can adjust the rear end structure of the orthodontic appliance, so that the rear end structure of the orthodontic appliance can be flexibly adjusted in structure to adapt to the wearer's dental arch shape and control the vertical development of the jaw, thereby achieving a significant correction effect, comfortable wearing, and no need for frequent trimming and replacement of the orthodontic appliance. Summary of the invention

[0005] The purpose of the present application is to provide an inductive appliance, a correction set and a correction system with an adjustable rear end, so as to prevent and treat early malocclusion problems, and to adjust the size of the rear end of the appliance. The embodiments of the present application can be implemented by the following technical solutions:

[0006] A rear-end adjustable induction appliance, comprising an appliance front body, the appliance front body being an integral structure for accommodating the occlusion of upper and lower teeth, the appliance front body including an anterior occlusal pad, a labial-buccal stop, a lingual anterior stop, and a breathing hole, the anterior occlusal pad, the labial-buccal stop, and the lingual anterior stop jointly constituting tooth guiding grooves respectively acting on the upper and lower teeth, the appliance front body further including a receiving groove, the receiving groove being an open groove located in the middle of the end of the anterior occlusal pad;

[0007] The end of the appliance front body is connected to an appliance rear body, the appliance rear body including a connecting pad, the connecting pad being received inside the receiving groove to achieve detachable connection between the appliance front body and the appliance rear body.

[0008] Further, the appliance rear body includes a posterior occlusal pad, the posterior occlusal pad being a flat occlusal surface with a curvature, the curvature of the posterior occlusal pad being similar to the curvature of the end of the dental arch;

[0009] The outer edges of the posterior occlusal pad extend upward and downward respectively to form posterior buccal stops, and the inner edges of the posterior occlusal pad extend upward and downward respectively to form lingual stops, and the posterior buccal stops are smoothly transitioned with the labial-buccal stops, and the lingual stops are smoothly transitioned with the lingual anterior stops.

[0010] Further, the appliance rear body includes several size specifications matching the appliance front body, the length of the posterior occlusal pad extending radially along the posterior buccal stop includes several size specifications, and the thickness of the occlusal surface of the posterior occlusal pad includes several size specifications.

[0011] Further, the receiving groove is bent towards the breathing hole and the bending curvature is the same as the bending curvature of the appliance front body.

[0012] Further, the receiving groove includes a groove wall, the groove wall being an arc with a smooth surface;

[0013] The connecting pad includes a limiting surface, the limiting surface being the side wall of the connecting pad, and the limiting surface matching the shape of the groove wall.

[0014] Further, the receiving groove includes the groove wall, the groove wall being an arc with a surface similar to a wave shape;

[0015] The connecting pad includes a limiting surface, the limiting surface being the side wall of the connecting pad, the limiting surface being in a shape of a serrated curve, and the limiting surface meshing with the groove wall.

[0016] A correction set includes any one of the induced orthodontic appliances as described above, wherein several of the induced orthodontic appliances include several orthodontic appliance front bodies of the same size and several orthodontic appliance rear bodies of different sizes. The orthodontic appliance front bodies and orthodontic appliance rear bodies in the correction set can form a variety of induced orthodontic appliances suitable for different correction types and for different wearers.

[0017] A correction kit, comprising any one of the above-mentioned induction corrective appliances,

[0018] The plurality of induced orthodontics include a plurality of orthodontic front bodies of different sizes and a plurality of orthodontic rear bodies of the same size. The orthodontic front bodies and orthodontic rear bodies in the orthodontic set can form a plurality of induced orthodontics suitable for different types of correction and for different wearers.

[0019] A correction system, comprising a plurality of correction sets, wherein the plurality of correction sets include at least one correction set as described above, and the orthodontic precursors of two different correction sets in the plurality of correction sets are different;

[0020] The multiple sets of correction kits all include a front body of the correction device and a rear body of the correction device.

[0021] A correction system, comprising a plurality of correction sets, wherein the plurality of correction sets include at least one correction set as described above, and the rear bodies of the correction devices of two different correction sets in the plurality of correction sets are different;

[0022] The multiple sets of correction kits all include a front body of the correction device and a rear body of the correction device.

[0023] The induction appliance, correction kit and correction system with adjustable rear end provided in the embodiments of the present application have at least the following beneficial effects:

[0024] The thickness and length of the brace pad can be flexibly adjusted in structure, which can well control the vertical development of the jaw, better adapt to the patient's dental arch, be comfortable to wear, and do not need to trim and replace the brace frequently, thus saving the cost of correction for doctors and wearers;

[0025] The front body and rear body of the orthodontic appliance of the present application can be combined and matched according to the correction needs, and the front body or rear body of the orthodontic appliance can be replaced in a targeted manner during the correction process. It has the advantages of a wide range of applications and strong replacement flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of an induction appliance with adjustable rear end in Example 1 of the present application;

[0027] Figure 2 This is a schematic diagram of the rear view structure of the front body of the orthodontic device in Example 1 of the present application;

[0028] Figure 3 It is a schematic side view of the structure of the front body of the orthodontic device in the first embodiment of the present application;

[0029] Figure 4 In the first embodiment of the present application, Figure 3 AA section structural diagram;

[0030] Figure 5 This is a schematic diagram of the structure of the rear body of the orthodontic device in Example 1 of the present application;

[0031] Figure 6 This is a schematic diagram of the overall structure of an induction appliance with adjustable rear end in Example 2 of the present application;

[0032] Figure 7 In the second embodiment of the present application, Figure 3 AA section structural diagram;

[0033] Figure 8 This is a schematic diagram of the structure of the rear body of the orthodontic device in Example 2 of the present application.

[0034] Numbers in the figure

[0035] 1-front body of the appliance; 11-anterior occlusal pad; 12-lip and cheek stop; 121-lip frenulum buffer zone; 122-cheek frenulum buffer zone; 13-lingual front stop; 14-breathing hole; 15-accommodating groove; 151-groove wall; 16-upper tooth guide groove; 2-posterior body of the appliance; 21-posterior occlusal pad; 22-posterior cheek stop; 23-lingual side stop; 24-connecting pad; 241-connecting surface; 242-limiting surface. DETAILED DESCRIPTION

[0036] Hereinafter, the present application will be further described based on preferred embodiments with reference to the accompanying drawings.

[0037] In addition, various components on the drawings are enlarged (thickened) or reduced (thinned) for ease of understanding, but this practice is not intended to limit the scope of protection of the present application.

[0038] Words importing the singular also include the plural and vice versa.

[0039] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, in the description of the present application, in order to distinguish different units, the words "first", "second", etc. are used in this specification, but these are not limited by the order of manufacture, nor can they be understood as indicating or implying relative importance, and their names may be different in the detailed description of the application and the claims.

[0040] The vocabulary in this specification is used to illustrate the embodiments of the present application, but is not intended to limit the present application. It should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or a connection between the two components. For those skilled in the art, the specific meanings of the above terms in this application can be specifically understood.

[0041] Embodiment 1

[0042] Figure 1 FIG. 1 is a schematic diagram of the overall structure of an induction appliance with an adjustable rear end in this embodiment. Figure 1 As shown, an inductive orthodontic appliance with an adjustable rear end includes an orthodontic appliance front body 1 and an orthodontic appliance rear body 2, wherein the orthodontic appliance front body 1 is an integrated structure for accommodating the occlusion of upper and lower teeth, the orthodontic appliance front body 1 includes a tooth guide groove for inducing tooth arrangement, a breathing hole 14 and a receiving groove 15, the orthodontic appliance rear body 2 adjusts the flat plate portion of the molar occlusion, the orthodontic appliance rear body 2 includes a posterior occlusal pad 21, a buccal back stop 22, a lingual side stop 23 and a connecting pad 24, and the orthodontic appliance front body 1 and the orthodontic appliance rear body 2 are detachably connected by the receiving groove 15 and the connecting pad 24 that cooperate with each other.

[0043] Figure 2 FIG. 1 is a schematic diagram of the rear view of the front body 1 of the orthodontic appliance in this embodiment. Figure 2 As shown, the orthodontic appliance precursor 1 includes an anterior occlusal pad 11, a lip cheek stop 12, and a tongue front stop 13. The anterior occlusal pad 11, the lip cheek stop 12, and the tongue front stop 13 together constitute a tooth guide groove that acts on the upper and lower teeth respectively, and the tooth guide groove is used to guide the tooth arrangement layout.

[0044] Specifically, the front occlusal pad 11 is a U-shaped occlusal surface for tooth occlusion, and the outer edges of the front occlusal pad 11 extend upward and downward to form a lip cheek stop 12, and the inner edges of the front occlusal pad 11 extend upward and downward to form a tongue front stop 13. The front occlusal pad 11, the lip cheek stop 12, and the tongue front stop 13 together constitute a tooth guide groove for inducing tooth arrangement, which is used to release the wearer's dental arch from the lips and cheek muscles, and reserve a suitable growth space for the teeth to guide the normal development of the teeth.

[0045] The tooth guide groove includes an upper tooth guide groove 16 and a lower tooth guide groove (not shown in the figure). The upper tooth guide groove 16 and the lower tooth guide groove (not shown in the figure) are groove bodies for guiding the tooth arrangement layout. The geometric shape inside the groove body is adapted to the shape of the tooth arrangement layout of the wearer's next stage of tooth correction, and is used to accommodate teeth, guide tooth correction and provide correction force for the teeth.

[0046] In some embodiments, the lip-cheek guard 12 includes a lip-frenulum buffer zone 121, which is located at the midline of the lip-cheek guard 12. The lip-frenulum buffer zone 121 is concave in shape and is used to avoid the lip-frenulum in the mouth, making it more comfortable to wear.

[0047] Figure 3 Schematic diagram of the side view of the front body 1 of the orthodontic appliance in this embodiment. Figure 3 As shown, in some embodiments, the lip-cheek barrier 12 also includes a buccal frenulum buffer zone 122, which is located in the vestibule on both sides, the fan-shaped or band-shaped mucosal folds in the lower canine or premolar area, and the buccal frenulum buffer zone 122 is concave to avoid the buccal frenulum in the mouth, making it more comfortable to wear.

[0048] The front body 1 of the orthodontic appliance further comprises a plurality of breathing holes 14, which are holes located in the middle of the front tongue stop 13 and penetrate the front occlusal pad 11 and the lip and cheek stop 12, and are used to correct bad mouth breathing.

[0049] Figure 4 In this embodiment, Figure 3 The AA section structure diagram is as follows: Figure 4 As shown, the front body 1 of the orthodontic appliance further includes a receiving groove 15, and the receiving groove 15 is an open groove located in the middle of the end of the front occlusal pad 11, and the receiving groove 15 is bent and extended toward the breathing hole 14 and does not penetrate the breathing hole 14, that is, the receiving groove 15 is bent toward the breathing hole 14 and the bending curvature is the same as the bending curvature of the front body of the orthodontic appliance, and is used as a connecting limit groove, so that when the front body 1 of the orthodontic appliance and the rear body 2 of the orthodontic appliance cooperate with each other through the receiving groove 15, a detachable connection is achieved, and the position of the rear body 2 of the orthodontic appliance is limited so that it is not easy to fall off.

[0050] The receiving groove 15 includes a groove wall 151, which is a side wall extending toward the breathing hole 14. The groove wall 151 is in an arc shape with a smooth surface and is used to increase the firmness of the connection between the orthodontic appliance front body 1 and the orthodontic appliance rear body 2 by utilizing the arc-shaped receiving groove.

[0051] Figure 5 Schematic diagram of the structure of the rear body 2 of the appliance in this embodiment. Figure 5 As shown, the rear body 2 of the orthodontic appliance is a flat plate portion for accommodating molars, and the rear body 2 of the orthodontic appliance includes a posterior occlusal pad 21. A connecting pad 24 is provided at the cross section of the connection between the posterior occlusal pad 21 and the anterior occlusal pad 11. When installed, the connecting pad 24 is accommodated in the accommodating groove 15, so that the connecting pad 24 and the accommodating groove 15 cooperate with each other to achieve a detachable connection between the front body 1 of the orthodontic appliance and the rear body 2 of the orthodontic appliance, thereby achieving replacement of the rear body 2 of the orthodontic appliance of different sizes according to the wearer's needs and the type of correction.

[0052] The posterior occlusal pad 21 is a flat occlusal surface with an arc. The arc of the posterior occlusal pad 21 is similar to the arc of the end of the dental arch, which is used to increase wearing comfort and fit more closely with the anterior occlusal pad 11.

[0053] The outer edges of the posterior occlusal pad 21 extend upward and downward to form a buccal back stop 22, and the inner edges of the posterior occlusal pad 21 extend upward and downward to form a lingual side stop 23. The buccal back stop 22 transitions smoothly with the lip cheek stop 12, and the lingual side stop 23 transitions smoothly with the tongue front stop 13, so as to release the wearer's dental arch from the buccal muscles, reserve appropriate growth space for the molars, and guide the normal development of the teeth.

[0054] The rear body 2 of the orthodontic appliance includes several sizes that match the front body 1 of the orthodontic appliance. When the rear body 2 of the orthodontic appliance is matched with the front body 1 of the orthodontic appliance, the posterior occlusal pad 21 can meet the dental arch shapes and sizes of different wearers without the need for size trimming.

[0055] Specifically, the length of the posterior occlusal pad 21 extending radially along the posterior cheek stop 22 has various sizes, so that when the rear body 2 of the orthodontic appliance is matched with the front body 1 of the orthodontic appliance, the length of the posterior occlusal pad 21 can be selected according to the shape of the wearer's dental arch.

[0056] Furthermore, the posterior occlusal pad 21 is a flat plate structure with an occlusal surface thickness, and the thickness of the posterior occlusal pad 21 includes several size specifications. When the rear body 2 of the orthodontic appliance is matched with the front body 1 of the orthodontic appliance, the difference in occlusal surface thickness between the posterior occlusal pad 21 and the front occlusal pad 11 can be used to selectively lower or raise part of the teeth according to the vertical development of the wearer's teeth, thereby adjusting the vertical development of the wearer's teeth and promoting the normal development of the maxilla.

[0057] The connection pad 24 is a strip structure with an arc, and the curvature of the connection pad 24 matches the arc of the groove body of the receiving groove 15. That is, during installation, the connection pad 24 can be snugly accommodated inside the receiving groove 15 to increase the stability of the assembled structure and is not easy to fall off.

[0058] Specifically, the connecting pad 24 includes a connecting surface 241 and a limiting surface 242. The connecting surface 241 is a surface accommodated in the accommodating groove 15 and in contact with the occlusal surface of the anterior occlusal pad 11. The limiting surface 242 is a side wall of the connecting pad 24. The limiting surface 242 is in a smooth curved shape. The overall structure of the limiting surface 242 is bent toward the lingual side stop 23. The limiting surface 242 matches the groove wall 151, is used to cooperate with the shape of the accommodating groove 15, and has a limiting effect.

[0059] In some embodiments, it is conceivable that, in order to increase the structural stability after assembly, the connection surface 241 between the rear body 2 of the orthodontic appliance and the receiving groove 15 can be set to a frosted surface, which is used to increase the friction of the connection surface by utilizing the non-smooth connection surface, thereby preventing the rear body 2 of the orthodontic appliance from falling off and separating from the front body 1 of the orthodontic appliance.

[0060] Embodiment 2

[0061] Figure 6 This is a schematic diagram of the overall structure of an induction appliance with an adjustable rear end in this embodiment. Figure 7 In this embodiment, Figure 3 The AA section structure diagram is as follows: Figure 6 , Figure 7 As described above, the structure of this embodiment is similar to that of the first embodiment, and the only difference is that the shape of the side wall of the receiving groove 15 and the side wall of the connecting pad 24 are different from those of the first embodiment.

[0062] Specifically, the accommodating groove 15 includes a groove wall 151, which is a side wall extending toward the breathing hole 14. The groove wall 151 has a wavy arc surface and is used to utilize the wavy uneven surface to increase the firmness of the connection between the orthodontic front body 1 and the orthodontic rear body 2.

[0063] Figure 8 Schematic diagram of the structure of the rear body 2 of the appliance in this embodiment. Figure 8The connecting pad 24 includes a connecting surface 241 and a limiting surface 242, wherein the connecting surface 241 is accommodated in the accommodating groove 15 and is the surface that contacts the anterior occlusal pad 11, and the limiting surface 242 is the side wall of the connecting pad 24, and the limiting surface 242 is a sawtooth-like curve, and the overall structure of the limiting surface 242 is bent toward the lingual side stop 23, and the limiting surface 242 matches the shape of the groove wall 151, that is, after assembly, the groove wall 151 and the connecting pad 24 can be meshed together to increase the firmness and stability of the assembly.

[0064] In some embodiments, it is conceivable that the groove wall 151 and the connecting pad 24 are uneven surfaces that can cooperate with each other. The wavy and sawtooth-like shapes are just a description of the uneven surface, not a restriction on the shape. As long as the two can be meshed with each other, the specific shape is not further restricted here.

[0065] The embodiment of the present application also provides a correction system, including multiple correction sets, each of which includes a front body of a correction device and a rear body of a correction device. A correction set and a correction system of the present application are described in detail below.

[0066] In some embodiments, the correction set includes several induced braces in the above-mentioned embodiments, and the several induced braces include several brace fronts of the same size and several brace backs of different sizes. The brace fronts and brace backs in the correction set can be composed of a variety of induced braces suitable for different correction types and for different wearers, so as to achieve that a set of correction sets can meet the correction needs in various situations by continuously replacing the brace backs without replacing the brace fronts.

[0067] The correction system comprises a plurality of correction sets, wherein the plurality of correction sets comprise at least one of the correction sets mentioned above, and the orthodontic device precursors of two different correction sets in the plurality of correction sets are different.

[0068] Specifically, in some embodiments, a series of different multiple sets of correction sets can gradually guide the teeth from the initial position to the target correction position, wherein the initial position is the relative position of the digital model collected when the wearer seeks medical treatment, and the target correction position is the position embodiment of the final correction effect determined by the doctor and medical designers based on the wearer's demands and oral conditions. Since the wearer's oral conditions are different at different correction stages, multiple sets of correction sets are required to gradually guide the teeth from the initial position to the target position. In this process, a series of different multiple sets of correction appliances are required to be worn for correction.

[0069] Depending on the wearer's induction situation, there may be a situation where the wearer's front dental arch (i.e., the position of the dental arch corresponding to the position of the front body of the orthodontic appliance when worn) does not change significantly, and only the end of the dental arch (i.e., the position of the dental arch corresponding to the position of the rear body of the orthodontic appliance when worn) continues to change with the induced correction. At this time, under one correction system, the same or same-sized front body of the orthodontic appliance can be used, and only the size of the rear body of the orthodontic appliance needs to be changed.

[0070] In some other embodiments, it is conceivable that the several induced orthodontic appliances in the correction set may also include several orthodontic appliance front bodies of different sizes and several orthodontic appliance back bodies of the same size. The orthodontic appliance front bodies and orthodontic appliance back bodies in the correction set may constitute a variety of induced orthodontic appliances suitable for different correction types and for different wearers, so that the doctor can choose to replace the orthodontic front bodies of different sizes to meet the correction needs according to the growth and development stage of the wearer and the oral conditions of different wearers without replacing the orthodontic appliance back bodies.

[0071] At this time, depending on the wearer's induction situation, the wearer's front dental arch (i.e., the dental arch position corresponding to the front body position of the orthodontic appliance when worn) undergoes significant changes with the induced correction, while the end of the dental arch (i.e., the dental arch position corresponding to the rear body position of the orthodontic appliance when worn) does not change significantly. At this time, under one correction system, the same or same size rear body of the orthodontic appliance can be used, and only the size of the front body of the orthodontic appliance needs to be changed.

[0072] Correspondingly, the correction system includes a plurality of correction sets, wherein the plurality of correction sets include at least one of the correction sets described above, and the rear bodies of the correction devices of two different correction sets in the plurality of correction sets are different.

[0073] The above is a detailed introduction to the specific implementation methods of the present application. For those skilled in the art, several improvements and modifications may be made to the present application without departing from the principles of the present application. These improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. An induction appliance with adjustable rear end, comprising an appliance front body, the appliance front body being an integrated structure for accommodating the occlusion of upper and lower teeth, the appliance front body comprising an anterior occlusal pad, a lip and cheek stopper, a tongue front stopper, and a breathing hole, the anterior occlusal pad, the lip and cheek stopper, and the tongue front stopper together constitute tooth guide grooves acting on the upper and lower teeth respectively, Features: The front body of the appliance further comprises a receiving groove, which is an open groove located in the middle of the end of the front occlusal pad; The induction appliance comprises a rear body connected to the end of the front body of the appliance, the rear body of the appliance comprises a connection pad, and the connection pad is accommodated in the receiving groove to achieve a detachable connection between the front body of the appliance and the rear body of the appliance; The rear body of the appliance comprises a posterior occlusal pad, which is a flat plate-shaped occlusal surface with an arc, and the arc of the posterior occlusal pad is similar to the arc of the end of the dental arch; The outer edges of the posterior occlusal pad extend upward and downward to form a buccal stop, and the inner edges of the posterior occlusal pad extend upward and downward to form a lingual stop; The cheek back block has a smooth transition with the lip cheek block, and the tongue side block has a smooth transition with the tongue front block; The receiving groove is bent toward the breathing hole, and the curvature is the same as the curvature of the front body of the orthodontic appliance.

2. An induction appliance with adjustable rear end according to claim 1, Features: The rear body of the orthodontic appliance includes several sizes and specifications that match the front body of the orthodontic appliance, the length of the posterior occlusal pad extending radially along the posterior cheek stop includes several sizes and specifications, and the occlusal surface thickness of the posterior occlusal pad includes several sizes and specifications.

3. An induction appliance with adjustable rear end according to claim 2, Features: The receiving groove comprises a groove wall, and the groove wall is in an arc shape with a smooth surface; The connection pad comprises a limiting surface, which is a side wall of the connection pad and matches the shape of the groove wall.

4. According to claim 2, an induction appliance with adjustable rear end, Features: The receiving groove comprises a groove wall, and the groove wall is in an arc shape with a wave-like surface; The connection pad includes a limiting surface, and the limiting surface is a side wall of the connection pad; The limiting surface is in a sawtooth-like curve shape, and the limiting surface is meshed with the groove wall.

5. A correction kit, comprising the induction appliance as claimed in any one of claims 1 to 4, Features: The plurality of induced orthodontics include a plurality of orthodontic front bodies of the same size and a plurality of orthodontic rear bodies of different sizes. The orthodontic front bodies and orthodontic rear bodies in the orthodontic set can form a plurality of induced orthodontics suitable for different types of correction and for different wearers.

6. A correction kit, comprising the induction appliance according to any one of claims 1 to 4, Features: The plurality of induced orthodontics include a plurality of orthodontic front bodies of different sizes and a plurality of orthodontic rear bodies of the same size. The orthodontic front bodies and orthodontic rear bodies in the orthodontic set can form a plurality of induced orthodontics suitable for different types of correction and for different wearers.

7. A correction system, comprising a plurality of correction sets, Features: The plurality of correction sets include at least one correction set as claimed in claim 5, and the orthodontic precursors of two different correction sets in the plurality of correction sets are different; The multiple sets of correction kits all include a front body of the correction device and a rear body of the correction device.

8. A correction system, comprising a plurality of correction sets, Features: The plurality of correction sets include at least one correction set as claimed in claim 6, and the rear bodies of the correction devices of two different correction sets in the plurality of correction sets are different; The multiple sets of correction kits all include a front body of the correction device and a rear body of the correction device.

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