Orthodontic appliance and orthodontic appliance set
By setting up an occlusal support and limiting wall in the posterior tooth area of the aligner, the stability and freedom of movement of the clear aligner when opening the bite are solved, thus achieving a stable occlusal state and orthodontic design.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- WUXI EA BIOTECHNOLOGY LTD
- Filing Date
- 2025-12-30
- Publication Date
- 2026-07-09
AI Technical Summary
Existing clear aligners are prone to locating the jaw pads when the bite is open, limiting the range of motion and affecting treatment outcomes.
An occlusal support protruding towards the opposing tooth is provided in the posterior tooth area of the orthodontic appliance. The occlusal support has a limiting wall, and the end of the limiting wall away from the occlusal surface is higher than the apex of the protruding structure, which can restrict the opposing tooth from its side and improve the coverage and stability.
It improves the stability of occlusal support, enabling other orthodontic designs to be implemented while opening the jaw position, assisting in the movement of opposing teeth, and improving treatment outcomes.
Smart Images
Figure CN2025147396_09072026_PF_FP_ABST
Abstract
Description
Orthodontic appliances and appliance sets
[0001] This application claims priority to Chinese patent application No. 202423300866.2, filed on December 31, 2024, the entire contents of which are incorporated herein by reference. Technical Field
[0002] This application relates to the field of orthodontic technology, and in particular to an orthodontic appliance and appliance set capable of opening the bite. Background Technology
[0003] Malocclusion refers to deformities of the teeth, jawbone, and craniofacial region caused by congenital genetic factors or acquired environmental factors during a child's growth and development. It mainly includes misaligned teeth, misalignment of the upper and lower jaws, and facial deformities.
[0004] In recent years, shell-shaped orthodontic appliances based on polymer materials (such as invisible aligners) have become increasingly popular due to their advantages such as aesthetics, convenience, and ease of cleaning. However, orthodontic treatment for malocclusion is quite complex. How to stably open the bite while ensuring patient comfort, and how to conduct other orthodontic designs in the open jaw position after the bite is opened, have always been hot issues in invisible orthodontics.
[0005] In existing clear aligners, occlusal pads are placed on the upper and lower aligner shells to open the bite. These pads are typically glued to the shell or have cavitation protrusions. However, this method of aligner results in less secure tooth coverage, making the pads prone to detaching during wear. Furthermore, mandibular advancement is generally limited by the interlocking occlusal pads on the upper and lower aligners, restricting freedom of movement and preventing correction in the buccal-lingual direction, thus impacting treatment outcomes. Summary of the Invention
[0006] The purpose of this application is to provide an orthodontic appliance and appliance set capable of opening the bite.
[0007] To achieve the above-mentioned application objectives, this application adopts the following technical solution: an orthodontic appliance, comprising a brace having a cavity for accommodating teeth, an occlusal support portion extending from the posterior tooth region of the brace toward the opposing direction, the occlusal support portion having an occlusal surface that contacts the opposing teeth or the occlusal surface of the opposing brace, a limiting wall located on at least one side of the occlusal surface and extending toward the opposing direction, the occlusal surface having a protruding structure that mates with the occlusal surface, and the end of the limiting wall away from the occlusal surface being higher than the apex of the protruding structure.
[0008] As a further improvement to the technical solution of this application, the limiting wall is not higher than the highest point of the lateral surface of the opposing tooth crown.
[0009] As a further improvement of the technical solution of this application, the limiting wall is located on the buccal side and / or lingual side and / or distal side and / or mesial side of the occlusal surface.
[0010] As a further improvement of the technical solution of this application, the limiting wall and the occlusal surface surround to form a receiving cavity for accommodating the opposing teeth or the opposing dental crown.
[0011] As a further improvement of this application, the height of the limiting wall extending in the direction of the opposing jaw is not less than 0.5 mm.
[0012] As a further improvement of the technical solution of this application, the limiting wall has an inner wall surface, and the inner wall surface and the occlusal surface surround to form a receiving cavity for accommodating the opposing tooth or the opposing dental brace; the end of the inner wall surface away from the occlusal surface has a guiding slope, and the guiding slope is used to guide the opposing tooth or the opposing dental brace into the receiving cavity.
[0013] As a further improvement of the technical solution of this application, the limiting wall has an inner wall surface, and the inner wall surface and the occlusal surface surround to form a receiving cavity for accommodating the opposing tooth or the opposing dental brace; in the occlusal state, at least one side of the inner wall surface has a preset distance between it and the corresponding surface of the opposing tooth or the opposing dental brace.
[0014] As a further improvement of this application, on the long axis section of the opposing tooth / opposing brace, the angle between the tangent on the crown curve and the occlusal plane at the junction of the edge of the occlusal support and the crown of the opposing tooth / opposing brace is greater than 10°.
[0015] As a further improvement of the technical solution of this application, the occlusal support is a support block connected to the side of the brace facing the opposing teeth.
[0016] As a further improvement to the technical solution of this application, the support block and the dental brace are fixedly connected by adhesive, welding or riveting.
[0017] As a further improvement of the technical solution of this application, the occlusal support includes a hollow shell integrally formed with the brace, the inner cavity of the hollow shell is connected to the cavity, and the occlusal surface is located on the side of the hollow shell facing the opposing teeth.
[0018] As a further improvement to the technical solution of this application, the biting support portion further includes a filling block filled in the inner cavity.
[0019] As a further improvement of this application, the shape of the filling block is adapted to the inner cavity;
[0020] Along the occlusal direction, the cross-sectional dimensions of the inner cavity are uniform; or, along the occlusal direction, the cross-sectional dimensions of the inner cavity gradually decrease; or the inner cavity has a first cross-section and a second cross-section located on the side of the first cross-section away from the opposing tooth, the dimensions of the first cross-section being larger than the dimensions of the second cross-section.
[0021] As a further improvement to the technical solution of this application, the hollow shell and the filling block are fixedly connected by adhesive or welding.
[0022] To achieve the above-mentioned objectives, this application also provides an orthodontic appliance set, the orthodontic appliance set comprising N successive orthodontic appliances corresponding to N successive orthodontic steps, each of the N orthodontic appliances including the occlusal support portion; one filler block is applicable to the orthodontic appliance in at least one orthodontic step, the initial position of the opposing teeth corresponding to the occlusal support portion is different in different orthodontic steps, and the filler blocks in the corresponding occlusal support portions are different.
[0023] The beneficial effects of this application are as follows: The orthodontic appliance of this application, by providing an occlusal support portion protruding towards the opposing jaw in the posterior tooth area of the appliance, and the occlusal support portion being configured as a limiting wall extending from at least one side of the occlusal surface towards the opposing jaw, with the end of the limiting wall away from the occlusal surface higher than the apex of the protruding structure on the occlusal surface, after wearing the orthodontic appliance, the limiting wall can restrict the opposing teeth / opposite teeth from its side, improve the wrapping of the occlusal support portion on the opposing teeth / opposite ... Attached Figure Description
[0024] Figure 1 is a schematic diagram of the occlusal state structure of the orthodontic appliance after it is worn in the dentition according to the first embodiment of this application;
[0025] Figure 2 is a cross-sectional view along direction AA in Figure 1;
[0026] Figure 3 is a schematic diagram of the orthodontic appliance in Figure 2;
[0027] Figure 4 is a cross-sectional view along the AA direction of the occlusal state of the orthodontic appliance worn after the dentition in the second embodiment of this application.
[0028] Figure 5 is a cross-sectional view of the orthodontic appliance in the third embodiment of this application along direction AA;
[0029] Figure 6 is a cross-sectional view of the orthodontic appliance in the fourth embodiment of this application along direction AA;
[0030] Figure 7 is a cross-sectional view of the orthodontic appliance in the fifth embodiment of this application along direction AA. Detailed Implementation
[0031] The present application will now be described in detail with reference to the embodiments shown in the accompanying drawings. Please refer to Figures 1 to 7, which represent preferred embodiments of the present application. However, it should be noted that these embodiments are not intended to limit the present application. Equivalent modifications or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the scope of protection of the present application.
[0032] The terms "first," "second," etc., used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Furthermore, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, a connection can be a direct connection or an indirect connection through an intermediate medium; it can be a fixed connection, a movable connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0033] Please refer to Figures 1-3. This application provides an orthodontic appliance 10, which includes a brace 1 for fitting onto the maxillary dentition 20 or the mandibular dentition 30, and an occlusal support portion 2 protruding from the posterior tooth region of the brace 1 toward the opposing dentition. After the brace 1 is fitted onto the corresponding dentition, the occlusal support portion 2 can support the opposing dentition. During biting, the occlusal support portion 2 naturally supports the opposing dentition, opening the bite of the upper and lower teeth, so that the upper and lower jaws are in an open bite state. Furthermore, it has minimal foreign body sensation in the mouth, resulting in high patient comfort.
[0034] In one specific embodiment, as shown in Figure 1, the brace 1 is a shell-shaped orthodontic appliance that fits over the entire maxillary dentition 20 or the entire mandibular dentition 30. Specifically, the brace 1 has several cavities for accommodating teeth. The brace 1 has an anterior region and a posterior region. The brace 1 may not contain a designed movement range, or it may contain a designed movement range depending on specific needs. In this case, the geometry of the several cavities in the brace 1 that accommodate the teeth matches the target dentition layout of the corresponding orthodontic step. Of course, this is not a limitation. In other embodiments, the brace 1 may also be configured to fit only a portion of the teeth in the corresponding dentition, such as fitting at least a portion of the posterior teeth in the corresponding dentition.
[0035] In this embodiment, the orthodontic appliance 10 includes only one brace 1, that is, it does not include the opposing brace. In the occlusal state, the occlusal support 2 directly contacts and engages with the opposing teeth. Of course, this is not a limitation. In other embodiments, the orthodontic appliance 10 may also include an opposing brace. In this case, in the occlusal state, the occlusal support 2 directly contacts and engages with the opposing brace.
[0036] The following description, excluding the opposing braces, illustrates the use of an orthodontic appliance 10 comprising only one brace 1. It will further elaborate on the braces 1 and occlusal support 2 in this application. It is understood that the descriptions of the braces 1 and occlusal support 2 above and below also apply to cases where the orthodontic appliance 10 includes opposing braces.
[0037] Referring to Figures 2 and 3, the occlusal support 2 has an occlusal surface 21 that contacts the occlusal surface of the opposing tooth, and a limiting wall 22 located on at least one side of the occlusal surface 21 and extending toward the opposing tooth. Specifically, the occlusal surface 21 has a convex-concave fit with the occlusal surface of the opposing tooth, that is, the occlusal surface 21 has a protruding structure 211 and a concave structure 212 that fit with the occlusal surface of the opposing tooth. The end of the limiting wall 22 away from the occlusal surface 21 is higher than the apex of the protruding structure 211. The limiting wall 22 and the occlusal surface 21 enclose a receiving cavity 23 for accommodating the opposing tooth. After the braces 1 are placed on the corresponding dentition, the occlusal surface of the opposing tooth contacts the occlusal surface 21, and the opposing tooth is received in the receiving cavity 23. The limiting wall 22 can restrict the opposing tooth from its side, improve the wrapping of the opposing tooth by the occlusal support 2, and improve the stability of the support of the opposing tooth by the occlusal support 2, so that the upper and lower jaws can be stably maintained in the predetermined open bite state. At the same time, the side where the limiting wall 22 is located and the specific position of the limiting wall 22 can be set according to the needs to provide the opposing tooth with the orthodontic force on the preset side, assist the movement of the opposing tooth, and realize other orthodontic designs while opening the jaw position.
[0038] Meanwhile, in this application, the occlusal surface 21 engages with the occlusal surface of the opposing tooth, that is, the occlusal surface 21 is an occlusal structure corresponding to the occlusal surface of the opposing tooth. During biting, it enables the upper and lower jaws to bite stably, preventing the opposing jaw from slipping, misaligning, or deviating from the preset position, and maintaining a stable open bite state; at the same time, the orthodontic appliance 10 can be configured to move the mandible as needed to achieve the orthodontic purpose of mandibular orthodontic alignment.
[0039] Specifically, the aforementioned convex-concave fit is, for example, when the occlusal surface of the opposing tooth has a convex structure, the occlusal surface 21 has a concave structure 212 that fits with the convex structure; when the occlusal surface of the opposing tooth has a concave structure, the occlusal surface 21 has a convex structure 211 that fits with the concave structure. The convex structure of the occlusal surface includes the cusp of the opposing tooth for biting, and the concave structure of the occlusal surface includes the socket of the opposing tooth for biting.
[0040] The vertex of the aforementioned protrusion structure 211 can also be understood as the highest point of the occlusal surface 21.
[0041] In some optional embodiments, the limiting wall 22 is not higher than the high point P of the lateral surface of the opposing tooth crown. When the dental crown 1 is placed on the corresponding dentition and in the biting state, the limiting wall 22 will not exceed the high point P of the lateral surface of the opposing tooth crown. Therefore, the limiting wall 22 will not affect the user's mouth opening, and during biting, there will be no excessive interference between the limiting wall 22 and the opposing tooth.
[0042] In some optional embodiments, on the long axis section of the opposing tooth / opposing brace, the angle β between the tangent on the crown curve and the occlusal plane at the junction of the edge of the occlusal support 2 and the crown of the opposing tooth / opposing brace is greater than 10°, wherein β is preferably 45°, which can better wrap the opposing tooth / opposing brace.
[0043] Specifically, referring to Figure 2, plane α is a plane parallel to the occlusal plane. The occlusal plane is an imaginary plane formed by the mesial contact point of the bilateral central incisors of the opposing dentition and the mesial buccal cusp of the bilateral first molars.
[0044] The aforementioned tooth long axis section refers to the longitudinal section passing through the tooth long axis. Note that the included angle β in Figure 2 is for illustrative purposes only, and the longitudinal section in Figure 2 is not the tooth long axis section.
[0045] Referring to Figures 2 and 3, in the first embodiment of this application, the limiting wall 22 is located on the buccal and lingual sides of the occlusal surface 21, and can wrap around and restrict the opposing teeth on the buccal and lingual sides. Of course, this is not a limitation, and the specific position of the limiting wall 22 can be set according to needs. As shown in Figure 4, which is the orthodontic appliance 10a in the second embodiment of this application, the limiting wall 22 in the occlusal support 2a may also be located only on the buccal side of the occlusal surface 21, or in other embodiments, the limiting wall 22 may also be located only on the lingual side of the occlusal surface 21, or the limiting wall 22 may also be located on the distal and / or mesial side of the occlusal surface 21.
[0046] The limiting wall 22 has an inner wall surface, which, together with the occlusal surface 21, forms a receiving cavity 23 for accommodating the opposing tooth. In one specific embodiment, the receiving cavity 23 is configured to have no preset design movement, in which case the limiting wall 22 will not compress the opposing tooth after occlusion. Of course, this is not a limitation.
[0047] In some optional embodiments, the height of the limiting wall 22 extending toward the opposing tooth is not less than 0.5 mm, and preferably greater than 1 mm. That is, the depth of the receiving cavity 23 enveloping the opposing tooth is not less than 0.5 mm, and preferably greater than 1 mm, to improve the enveloping effect of the receiving cavity 23 on the opposing tooth during occlusion and to improve the stability of the effect of the receiving cavity 23 on the opposing tooth. Of course, this is not a limitation. In other embodiments, the height of the limiting wall 22 extending toward the opposing tooth can be set to not more than 0.5 mm, that is, the depth of the receiving cavity 23 enveloping the opposing tooth is not more than 0.5 mm.
[0048] Furthermore, the end of the inner wall surface away from the occlusal surface 21 has a guiding slope, which allows the opposing teeth to slide quickly into the receiving cavity 23 under the guidance of the guiding slope during biting.
[0049] In some specific embodiments, in the occlusal state, at least one inner wall surface is at a predetermined distance from the corresponding surface of the opposing tooth. That is, when it is necessary to allow some degree of freedom of movement for the opposing tooth on a certain side, the limiting wall 22 on that side is configured to have a predetermined distance between the inner wall surface of the limiting wall 22 on that side and the opposing tooth during occlusion. For example, when it is necessary for the opposing tooth to have a certain degree of freedom of movement on the buccal and lingual sides, the orthodontic appliance 10 is configured to have a predetermined distance between the inner wall surface of the limiting wall 22 on the buccal and lingual sides and the buccal and lingual surfaces of the opposing tooth during occlusion.
[0050] Specifically, the size of the preset distance can be set according to specific needs. It should be noted that, in the embodiment where the orthodontic appliance 10 includes the opposing brace 1, the preset distance between the inner wall surface of at least one side and the corresponding surface of the opposing tooth means that there is a preset distance between the inner wall surface of at least one side and the corresponding surface of the opposing brace.
[0051] Referring to Figures 2-4, in some embodiments, the occlusal support parts 2 and 2a are support blocks connected to the side of the brace 1 facing the opposing teeth, and the receiving cavity 23 is formed on the side of the support block away from the brace 1. That is, the support block and the brace 1 are separate molding structures. Specifically, the support block and the brace 1 can be fixedly connected by adhesive, welding, or riveting. Installation is convenient, and the occlusal support parts 2 and 2a that can produce different orthodontic effects can be selected according to the patient's actual oral condition and assembled with the brace 1 to form the orthodontic appliances 10 and 10a, allowing for personalized use and treatment for the patient.
[0052] Referring to Figures 5-7, in some embodiments, the occlusal support 2 includes a hollow shell 24 integrally formed with the braces 1. The inner cavity of the hollow shell 24 is connected to the cavity, and the occlusal surface 21 is located on the side of the hollow shell 24 facing the opposing teeth. That is, the occlusal support 2 is a cavitation structure integrally formed with the braces 1 by heat pressing, which facilitates the fabrication of the orthodontic appliance 10 and improves wearing safety, preventing unnecessary harm to the patient due to accidental swallowing caused by a weak connection between the braces 1 and the occlusal support 2.
[0053] Furthermore, in an embodiment where the occlusal support 2 includes a hollow shell 24 integrally formed with the brace 1, the occlusal support 2 further includes a filling block 25 filling the inner cavity. This improves the support strength of the occlusal support 2, enabling the upper and lower jaws to maintain a stable open bite state and bite angle.
[0054] Specifically, the shape of the filling block 25 is adapted to the inner cavity to further improve the support strength of the biting support 2.
[0055] Referring to Figure 5, the orthodontic appliance 10b in the third embodiment of this application is configured such that the cross-sectional dimensions of the inner cavity of the hollow shell 24 are consistent along the occlusal direction, or the cross-sectional dimensions of the inner cavity gradually decrease, thereby realizing a detachable connection between the filling block 25 and the hollow shell 24.
[0056] Specifically, when the filling block 25 and the hollow shell 24 are designed to be detachably connected, one filling block 25 can be used for multiple orthodontic steps. At this time, an orthodontic appliance set can be provided, the orthodontic appliance set including N successive orthodontic appliances 10b corresponding to N successive orthodontic steps, each of the N orthodontic appliances 10b including the occlusal support portion 2b. At this time, one filler block 25 is suitable for the orthodontic appliance 10b in at least one orthodontic step. For example, if the opposing teeth corresponding to the occlusal support portion 2b in adjacent orthodontic steps do not involve movement, then the orthodontic appliances 10b corresponding to these orthodontic steps can share one filler block 25; if the opposing teeth corresponding to the occlusal support portion 2b in adjacent orthodontic steps involve movement, then the shape of the occlusal support portion 26 itself will be different for each orthodontic step, and thus the corresponding filler blocks 25 are also different and cannot be shared. That is, the initial position of the opposing teeth corresponding to the occlusal support portion 2b in different orthodontic steps is different, and the filler blocks 25 in the corresponding occlusal support portion 2b are different and cannot be shared.
[0057] In some embodiments, the filling block 25 and the hollow shell 24 can also be securely connected using their own structure. In this case, the secure connection between the filling block 25 and the hollow shell 24 is achieved simultaneously while the hollow shell 24 is being formed, and the filling block 25 and the hollow shell 24 are not detachable. The inner cavity is defined as having a first cross-section and a second cross-section located on the side of the first cross-section away from the opposing tooth. The size of the first cross-section is larger than the size of the second cross-section. That is, along the direction away from the opposing tooth, the inner cavity has a constricted portion or a tapered section, thereby enabling the filling block 25 to be securely locked within the inner cavity and preventing it from falling out, thus improving the stability of the fixation between the filling block 25 and the hollow shell 24. For example, as shown in FIG6, in the fourth embodiment of the orthodontic appliance 10c of this application, the occlusal support 2c is configured such that the cross-sectional dimension of the inner cavity of the hollow shell 24 gradually increases along the occlusal direction; as shown in FIG7, in the fifth embodiment of the orthodontic appliance 10d of this application, the occlusal support 2d is configured such that the cross-sectional dimension of the inner cavity of the hollow shell 24 gradually decreases and then gradually increases along the occlusal direction, at which time the first cross-section and the second cross-section mentioned above are located in the gradually increasing segment.
[0058] Of course, the fixing method between the filling block 25 and the hollow shell 24 is not limited to the above-mentioned detachable connection and snap-fit connection. The filling block 25 and the hollow shell 24 can also be fixedly connected by adhesive or welding, such as by laser welding. In this case, there are no special restrictions on the shape of the inner cavity.
[0059] Compared with the prior art, the orthodontic appliances 10, 10a, 10b, 10c, and 10d in this application, by providing occlusal support portions 2, 2a, 2b, 2c, and 2d protruding towards the opposing jaw in the posterior tooth area of the appliances 10, 10a, 10b, 10c, and 10d, and the occlusal support portions 2, 2a, 2b, 2c, and 2d are configured as limiting walls 22 having at least one side of the occlusal surface 21 extending towards the opposing jaw, after the appliances 10, 10a, 10b, 10c, and 10d are worn, the limiting walls 22 can be free from their own... The limiting wall 22 restricts the opposing teeth / braces on the side where it is located, improving the wrapping of the occlusal support parts 2, 2a, 2b, 2c, and 2d on the opposing teeth / braces, and improving the stability of the occlusal support parts 2, 2a, 2b, 2c, and 2d in supporting the opposing teeth, so that the upper and lower jaws can be stably maintained in the predetermined open occlusal state; at the same time, the side where the limiting wall 22 is located and the specific position of the limiting wall 22 can be set according to needs to provide the opposing teeth with the orthodontic force on the preset side, assisting the movement of the opposing teeth, and realizing other orthodontic designs while opening the jaw position.
[0060] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0061] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this application and are not intended to limit the scope of protection of this application. All equivalent implementation methods or modifications made without departing from the spirit of the art of this application should be included within the scope of protection of this application.
Claims
1. An orthodontic appliance comprising a brace having a cavity for receiving teeth; characterized in that: The orthodontic appliance further includes an occlusal support extending from the posterior tooth region of the braces toward the opposing jaw direction. The occlusal support has an occlusal surface that contacts the opposing tooth or the occlusal surface of the opposing braces, and a limiting wall located on at least one side of the occlusal surface and extending toward the opposing jaw direction. The occlusal surface has a protruding structure that mates with the occlusal surface, and the end of the limiting wall away from the occlusal surface is higher than the apex of the protruding structure.
2. The orthodontic appliance as described in claim 1, characterized in that: The limiting wall is not higher than the highest point of the lateral surface of the opposing tooth crown.
3. The orthodontic appliance as described in claim 1, characterized in that: The limiting wall is located on the buccal side and / or lingual side and / or distal side and / or mesial side of the occlusal surface.
4. The orthodontic appliance as described in claim 1, characterized in that: The limiting wall and the occlusal surface enclose a receiving cavity to accommodate the opposing teeth or the opposing dental braces.
5. The orthodontic appliance as described in claim 4, characterized in that: The height of the limiting wall extending toward the opposing jaw is not less than 0.5 mm.
6. The orthodontic appliance as described in claim 1, characterized in that: The limiting wall has an inner wall surface, which, together with the occlusal surface, forms a receiving cavity for accommodating the opposing tooth or the opposing dental brace; the end of the inner wall surface away from the occlusal surface has a guiding slope, which is used to guide the opposing tooth or the opposing dental brace into the receiving cavity.
7. The orthodontic appliance as claimed in claim 1, characterized in that: The limiting wall has an inner wall surface, which, together with the occlusal surface, forms a receiving cavity for accommodating the opposing tooth or the opposing dental brace; in the occlusal state, at least one side of the inner wall surface has a predetermined distance from the corresponding surface of the opposing tooth or the opposing dental brace.
8. The orthodontic appliance as claimed in claim 1, characterized in that: On the long axis section of the opposing tooth / opposing brace, the angle between the tangent on the crown curve and the occlusal plane at the junction of the edge of the occlusal support and the crown of the opposing tooth / opposing brace is greater than 10°.
9. The orthodontic appliance according to any one of claims 1 to 8, characterized in that: The occlusal support is a support block connected to the side of the brace facing the opposing teeth.
10. The orthodontic appliance as claimed in claim 9, characterized in that: The support block is fixedly connected to the dental brace by adhesive, welding, or riveting.
11. The orthodontic appliance according to any one of claims 1 to 8, characterized in that: The occlusal support includes a hollow shell integrally formed with the brace, the inner cavity of the hollow shell is connected to the cavity, and the occlusal surface is located on the side of the hollow shell facing the opposing teeth.
12. The orthodontic appliance as claimed in claim 11, characterized in that: The bite support also includes a filling block that fills the inner cavity.
13. The orthodontic appliance as claimed in claim 12, characterized in that: The shape of the filling block is adapted to the inner cavity; Along the occlusal direction, the cross-sectional dimensions of the inner cavity are uniform; or, along the occlusal direction, the cross-sectional dimensions of the inner cavity gradually decrease; or the inner cavity has a first cross-section and a second cross-section located on the side of the first cross-section away from the opposing tooth, the dimensions of the first cross-section being larger than the dimensions of the second cross-section.
14. The orthodontic appliance as claimed in claim 12, characterized in that: The hollow shell and the filling block are fixedly connected by adhesive or welding.
15. A set of orthodontic appliances, characterized in that: The orthodontic appliance set includes N successive orthodontic appliances corresponding to N successive orthodontic steps, and each of the N orthodontic appliances includes the occlusal support portion; the orthodontic appliance is the orthodontic appliance as described in claim 12; One of the filler blocks is used in the appliance in at least one orthodontic step, and the initial position of the opposing teeth corresponding to the occlusal support is different in different orthodontic steps, and the filler blocks in the corresponding occlusal support are different.