Correcting appliance and correcting appliance set

Abstract

The utility model provides a corrector and a corrector set. The corrector comprises a tooth socket with a cavity for accommodating teeth, and an occlusion supporting part which protrudes from a back tooth area of the tooth socket to a jaw direction, the occlusal supporting part is provided with an occlusal surface and a limiting wall, the occlusal surface is in contact with a jaw surface of a jaw tooth or a jaw tooth socket, the limiting wall is positioned on at least one side of the occlusal surface and extends towards the jaw direction, and the occlusal surface is provided with a convex structure matched with the jaw surface; one end, far away from the occlusal surface, of the limiting wall is higher than the vertex of the convex structure; the wrapping performance of the occlusion supporting part on the pair of jaw teeth or the pair of jaw tooth sleeves is improved, the supporting stability of the occlusion supporting part on the pair of jaw teeth is improved, and the upper jaw and the lower jaw can be stably kept in a preset opening occlusion state.

Description

Technical Field

[0001] This utility model relates to the field of orthodontic technology, and in particular to an orthodontic appliance and appliance set capable of opening the bite. Background Technology

[0002] 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.

[0003] 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.

[0004] 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. Utility Model Content

[0005] The purpose of this invention is to provide an orthodontic appliance and appliance set that can open the bite.

[0006] To achieve the above-mentioned utility model objectives, the present utility model 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 cooperates 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.

[0007] As a further improvement of this utility model, the limiting wall is not higher than the highest point of the lateral surface of the opposing tooth crown.

[0008] As a further improvement of the present invention, 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.

[0009] As a further improvement of the present invention, the limiting wall and the occlusal surface surround to form a receiving cavity for accommodating the opposing teeth or the opposing dental crown.

[0010] As a further improvement of this utility model, the height of the limiting wall extending in the direction of the opposing jaw is not less than 0.5 mm.

[0011] As a further improvement of the present invention, 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.

[0012] As a further improvement of the present invention, 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.

[0013] As a further improvement of this utility model, 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°.

[0014] As a further improvement of this utility model, the occlusal support is a support block connected to the side of the brace facing the opposing teeth.

[0015] As a further improvement of this utility model, the support block and the dental brace are fixedly connected by adhesive, welding or riveting.

[0016] As a further improvement of the present invention, 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.

[0017] As a further improvement of the present invention, the biting support portion further includes a filling block filled in the inner cavity.

[0018] As a further improvement of this utility model, the shape of the filling block is adapted to the inner cavity;

[0019] 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.

[0020] As a further improvement of this utility model, the hollow shell and the filling block are fixedly connected by adhesive or welding.

[0021] To achieve the above-mentioned utility model objectives, this utility model also provides an orthodontic appliance set, which includes 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 at least one orthodontic appliance in at least one orthodontic step, and 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.

[0022] The beneficial effects of this invention are as follows: The orthodontic appliance of this invention has an occlusal support portion protruding towards the opposing jaw in the posterior tooth area. The occlusal support portion is configured as a limiting wall extending from at least one side of the occlusal surface towards the opposing jaw. The end of the limiting wall away from the occlusal surface is 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 / braces from its side, improve the wrapping of the occlusal support portion on the opposing teeth / braces, and improve the stability of the occlusal support portion in supporting the opposing teeth, so that the upper and lower jaws can be stably maintained in a predetermined open bite state. At the same time, the side where the limiting wall is located and the specific position of the limiting wall can be set according to needs to provide a preset lateral orthodontic force to the opposing teeth / braces, assisting the movement of the opposing teeth, and realizing other orthodontic designs while opening the jaw position. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the occlusal state structure of the orthodontic appliance after it is worn in the dental arch according to the first embodiment of this utility model;

[0024] Figure 2 yes Figure 1 Sectional view along line AA;

[0025] Figure 3 yes Figure 2 A schematic diagram of the structure of the orthodontic appliance in the diagram;

[0026] Figure 4 This is a cross-sectional view along the AA direction of the orthodontic appliance worn after the teeth are aligned in the second embodiment of this utility model.

[0027] Figure 5 This is a cross-sectional view of the orthodontic appliance in the third embodiment of this utility model along line AA;

[0028] Figure 6 This is a cross-sectional view of the orthodontic appliance in the fourth embodiment of this utility model along line AA;

[0029] Figure 7 This is a cross-sectional view of the orthodontic appliance in the fifth embodiment of this utility model along direction AA. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. Please refer to the accompanying drawings for further details. Figures 1 to 7 The figures shown represent preferred embodiments of the present invention. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent modifications or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0031] The terms "first," "second," etc., used in this utility model 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 explicitly 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 utility model according to the specific circumstances.

[0032] Please refer to Figures 1-3 As shown, this utility model 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 area 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.

[0033] In one specific implementation method, combined with Figure 1As shown, 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.

[0034] 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.

[0035] The following description, excluding the opposing braces, illustrates the use of the orthodontic appliance 10 comprising only one brace 1. It will further elaborate on the braces 1 and occlusal support 2 within the orthodontic appliance 10 of this invention. It is understood that the descriptions of the braces 1 and occlusal support 2 described above and below also apply to cases where the orthodontic appliance 10 includes opposing braces.

[0036] Combination Figures 2-3 As shown, 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 is in concave-convex contact 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 cooperate 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.

[0037] Meanwhile, in this invention, the occlusal surface 21 engages with the occlusal surface of the opposing tooth, meaning that 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 its preset position, maintaining a stable open bite state; simultaneously, the orthodontic appliance 10 can be configured to move the mandible as needed to achieve the orthodontic purpose of mandibular orthognathic alignment.

[0038] 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.

[0039] The vertex of the aforementioned protrusion structure 211 can also be understood as the highest point of the occlusal surface 21.

[0040] 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.

[0041] 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.

[0042] Specifically, in combination Figure 2 As shown, 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.

[0043] The aforementioned tooth long axis section refers to the longitudinal section passing through the tooth long axis. Among them, Figure 2 The included angle β in the figure is for illustrative purposes only. Figure 2 The longitudinal section in the figure is not the tooth long axis section.

[0044] Combination Figures 2-3 As shown, in the first embodiment of this utility model, 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, such as... Figure 4 As shown, this is the orthodontic appliance 10a in the second embodiment of the present invention. In this embodiment, the limiting wall 22 in the occlusal support 2a may be located only on the buccal side of the occlusal surface 21. Alternatively, in other embodiments, the limiting wall 22 may 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] Combination Figures 2-4As shown, 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 appliance 10 and 10a, allowing for personalized use and treatment for the patient.

[0051] Combination Figures 5-7 As shown, 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 loose connection between the braces 1 and the occlusal support 2.

[0052] 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.

[0053] 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.

[0054] Combination Figure 5As shown, the orthodontic appliance 10b in the third embodiment of this utility model 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, so that one filling block 25 can be used for multiple orthodontic steps. At this time, an orthodontic appliance set can be provided, which includes N successive orthodontic appliances 10b corresponding to N successive treatment steps. Each of the N orthodontic appliances 10b includes the occlusal support portion 2b. In this case, one filler block 25 is suitable for at least one orthodontic appliance 10b in at least one treatment step. For example, if the opposing teeth corresponding to the occlusal support portion 2b in adjacent treatment steps do not involve movement, then the orthodontic appliances 10b corresponding to these treatment steps can share one filler block 25. If the opposing teeth corresponding to the occlusal support portion 2b in adjacent treatment steps involve movement, then the shape of the occlusal support portion 26 itself will be different for each treatment step, and thus the corresponding filler blocks 25 will also be different and cannot be shared. That is, the initial position of the opposing teeth corresponding to the occlusal support portion 2b in different treatment steps is different, and the filler blocks 25 in the corresponding occlusal support portion 2b are different and cannot be shared.

[0055] 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 with the forming of the hollow shell 24, 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. Therefore, the filling block 25 can be securely locked within the inner cavity and will not fall out, improving the stability of the fixation between the filling block 25 and the hollow shell 24. For example, as... Figure 6 As shown, in the fourth embodiment of the orthodontic appliance 10c of this utility model, the occlusal support 2c is configured such that, along the occlusal direction, the cross-sectional dimension of the inner cavity of the hollow shell 24 gradually increases; as... Figure 7 As shown, in the fifth embodiment of the orthodontic appliance 10d of this utility model, the occlusal support 2d is configured such that, along the occlusal direction, the cross-sectional dimension of the inner cavity of the hollow shell 24 gradually decreases and then gradually increases, at which time the first cross-section and the second cross-section mentioned above are located in the gradually increasing segment.

[0056] 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.

[0057] Compared with the prior art, the orthodontic appliances 10, 10a, 10b, 10c, and 10d in this utility model, 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 being configured as limiting walls 22 having at least one side of the occlusal surface 21 extending towards the opposing jaw, after wearing the orthodontic appliances 10, 10a, 10b, 10c, and 10d, the limiting walls 22 can automatically... The side where the limiting wall 22 is located restricts the opposing teeth / braces, improving the wrapping of the opposing teeth / braces by the occlusal support parts 2, 2a, 2b, 2c, and 2d, and improving the stability of the support of the opposing teeth by the occlusal support parts 2, 2a, 2b, 2c, and 2d, 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 of the preset side, assisting the movement of the opposing teeth, and realizing other orthodontic designs while opening the jaw position.

[0058] 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.

[0059] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. An appliance comprising a shell having a cavity to receive a tooth; characterised in that: The appliance further comprises a bite support part protruding from the posterior teeth area of the dental aligner towards the interarch direction, the bite support part having a bite surface contacting the interarch tooth or the interarch dental aligner, a limiting wall located at least one side of the bite surface and extending towards the interarch direction, the bite surface having a convex structure matching the interarch tooth or the interarch dental aligner, and the end of the limiting wall away from the bite surface being higher than the vertex of the convex structure.

2. The appliance of claim 1, wherein: The limiting wall is not higher than the highest point of the interarch tooth crown side.

3. The appliance of claim 1, wherein: The limiting wall is located at the buccal side and / or the lingual side and / or the distal side and / or the mesial side of the bite surface.

4. The appliance of claim 1, wherein: The limiting wall and the bite surface form a receiving cavity accommodating the interarch tooth or the interarch dental aligner.

5. The appliance of claim 4 wherein: The limiting wall extends towards the interarch direction with a height not less than 0.5mm.

6. The appliance of claim 1, wherein: The limiting wall has an inner wall surface forming a receiving cavity accommodating the interarch tooth or the interarch dental aligner with the bite surface; the end of the inner wall surface away from the bite surface has a guide slope to guide the interarch tooth or the interarch dental aligner into the receiving cavity.

7. The appliance of claim 1, wherein: The limiting wall has an inner wall surface forming a receiving cavity accommodating the interarch tooth or the interarch dental aligner with the bite surface; in the occlusion state, the inner wall surface on at least one side has a preset distance with the corresponding surface of the interarch tooth or the interarch dental aligner.

8. The appliance of claim 1, wherein: In the tooth long axis cross section of the interarch tooth / interarch dental aligner, the intersection point of the edge of the bite support part and the tooth crown has an included angle between the tangent of the tooth crown curve and the jaw plane greater than 10°.

9. The appliance of any one of claims 1-8, wherein: The bite support part is a support block connected to the side of the dental aligner facing the interarch tooth.

10. The appliance of claim 9, wherein: The support block and the dental aligner are fixedly connected by adhesion or welding or riveting.

11. The appliance of any one of claims 1-8, wherein: The bite support part comprises a hollow shell integrally arranged with the dental aligner, the inner cavity of the hollow shell is in communication with the cavity, and the bite surface is located on the side of the hollow shell facing the interarch tooth.

12. The appliance of claim 11, wherein: The bite support part further comprises a filling block filled in the inner cavity.

13. The appliance of claim 12, wherein: The shape of the filling block is adapted to the inner cavity. Along the interarch direction, the cross-sectional size of the inner cavity is consistent; or, along the interarch direction, the cross-sectional size of the inner cavity gradually decreases; 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 interarch tooth, and the size of the first cross section is greater than the size of the second cross section.

14. The appliance of claim 12, wherein: The hollow shell and the filling block are fixedly connected by adhesion or welding.

15. A set of aligners, characterized in that: The appliance set comprises N successive aligners corresponding to N successive aligning steps respectively, each of the N aligners comprises the bite support part; the aligner is the aligner of claim 12; One filling block is applicable to the aligner in at least one aligning step, and the initial positions of the interarch tooth corresponding to the bite support part in different aligning steps are different, and the filling blocks in the corresponding bite support parts are different.

Images