Invisible aligner and invisible aligner set

Abstract

The utility model provides a kind of invisible mouthguard and invisible mouthguard group, invisible mouthguard includes mouthguard body, mouthguard body includes the labial cheek for wrapping tooth labial cheek side, the lingual surface for wrapping tooth tongue side and the end surface connecting labial cheek and lingual surface, invisible mouthguard further include the connecting surface of connecting lingual surface bottom edge and with lingual surface surrounding form recess area, the side of connecting surface away from recess area is used to act on tongue, alternatively, invisible mouthguard further include the action part of connecting the side of connecting surface away from bottom edge, action part is used to act on tongue.The connecting surface of the utility model cooperates with lingual surface and forms recess area, on the one hand, lingual surface forming recess area wraps tooth tongue side, can ensure that the whole invisible mouthguard is wrapped around tooth, avoid weakening the wrapping of tooth due to the addition of connecting surface or action part.On the other hand, the position of connecting surface can be freely adjusted, or the position of action part can be adjusted through connecting surface, to realize the individualized design of connecting surface and action part.

Description

Technical Field

[0001] This utility model relates to the field of orthodontic technology, and in particular to an invisible braces and an invisible braces assembly. Background Technology

[0002] During orthodontic treatment, the wearer's tongue habits have a significant impact on orthodontic treatment, as well as the development of the dentition and craniofacial region. Normally, the mixed dentition period in childhood is the optimal time for orthodontic treatment. However, undesirable tongue habits are most prevalent during this period. For example, children may lick loose baby teeth or newly erupted permanent teeth with the tip of their tongue, or stick their tongue out between their upper and lower front teeth. Undesirable tongue habits can easily cause teeth to tilt forward, induce localized open bite, and lead to dentition and craniofacial deformities. Utility Model Content

[0003] The purpose of this invention is to provide an invisible brace and an invisible brace assembly, which helps to solve tongue problems while improving the fit of the teeth.

[0004] This utility model provides an invisible brace, including a brace body. The brace body includes a labial / buccal surface for wrapping the labial / buccal side of the teeth, a lingual surface for wrapping the lingual side of the teeth, and an end face connecting the labial / buccal surface and the lingual surface. The invisible brace also includes a connecting surface that connects to the bottom edge of the lingual surface and forms a recessed area with the lingual surface. The side of the connecting surface away from the recessed area is used to act on the tongue. Alternatively, the invisible brace also includes an acting part that connects to the side of the connecting surface away from the bottom edge, and the acting part is used to act on the tongue.

[0005] Optionally, the side of the connecting surface away from the recessed area is used to act on the tongue, and the connecting surface includes a tongue-piercing surface.

[0006] Optionally, the invisible braces further include an active portion connecting the connecting surface to the side away from the bottom edge, the active portion having a connecting line with the connecting surface, the connecting line being higher than the bottom edge.

[0007] Optionally, the invisible braces further include an active portion connecting the connecting surface to the side away from the bottom edge, the active portion including a bearing surface connecting the connecting surface for supporting the tongue.

[0008] Optionally, the bearing surface extends generally in a horizontal direction, and the bearing surface is generally a plane or a concave curved surface.

[0009] Optionally, the bearing surface has a continuous structure in the dental arch direction, and the extension range of the bearing surface in the dental arch direction covers at least a continuous number of anterior teeth.

[0010] Optionally, the bearing surface extends in the direction of the dental arch to the first, second, or third molar on the left and right sides, and the bearing surface is U-shaped.

[0011] Optionally, the bearing surface is a discontinuous structure in the dental arch direction. The bearing surface includes an anterior bearing surface and two posterior bearing surfaces spaced apart from each other. The anterior bearing surface extends in the dental arch direction to cover at least a series of consecutive anterior teeth, and the posterior bearing surface extends in the dental arch direction to cover at least one of the first molar, the second molar, or the third molar.

[0012] Optionally, the bearing surface has a left-right symmetrical structure.

[0013] Optionally, the bearing surface includes a clearance portion for avoiding the tongue tether.

[0014] Optionally, the invisible braces further include an action portion connecting the side of the connecting surface away from the bottom edge, the action portion including a tongue-shaped surface connecting the connecting surface, the tongue-shaped surface extending downward.

[0015] Optionally, a cavity is formed between the tongue-shaped surface and the connecting surface.

[0016] Optionally, the invisible braces correspond to the upper teeth, and the brace body, the connecting surface, and the functional part are integrally formed.

[0017] Optionally, at least part of the lingual surface should be in close contact with the lingual side of the teeth.

[0018] This utility model provides an invisible braces assembly, including multiple invisible braces as described in any of the above technical solutions. The multiple invisible braces include invisible braces for the Nth orthodontic step and invisible braces for the N+Mth orthodontic step. The height of the bearing surface of the invisible braces for the Nth orthodontic step is lower than the height of the bearing surface of the invisible braces for the N+Mth orthodontic step, where N and M are both positive integers.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: In the embodiment of this utility model, the connecting surface and the lingual surface cooperate to form a recessed area. On the one hand, the lingual surface forming the recessed area wraps around the lingual side of the teeth, which can ensure the overall coverage of the teeth by the invisible braces and avoid weakening the coverage of the teeth due to the addition of connecting surfaces or active parts. On the other hand, the position of the connecting surface can be freely adjusted, or the position of the active part can be adjusted through the connecting surface to achieve personalized design of the connecting surface and active part. Attached Figure Description

[0020] Figure 1 This is a perspective view of an invisible brace according to one embodiment of the present invention (the first specific form of the first implementation). Figure 2 yes Figure 1 A sectional view (through the anterior tooth bearing surface); Figure 3 This is a schematic diagram of invisible braces worn on teeth according to one embodiment of the present invention (the first specific form of the first implementation). Figure 4 This is a perspective view of an invisible brace according to one embodiment of the present invention (the second specific form in the first implementation). Figure 5 yes Figure 4 A sectional view; Figure 6 This is a schematic diagram of an embodiment of the present invention, in which an invisible dental brace (excluding the active part) is worn on the teeth; Figure 7 This is a schematic diagram of an invisible brace worn on the teeth according to one embodiment (second implementation) of this utility model; Figure 8 This is a schematic diagram of the invisible braces assembly (including invisible braces for different orthodontic steps) of this utility model; Figure 9 This is a schematic diagram of the invisible braces assembly (including the opposing invisible braces) of this utility model. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0022] It should be noted that the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Combination Figures 1 to 7 This is a schematic diagram of an invisible brace 100 according to one embodiment of the present invention.

[0024] The invisible braces 100 includes the braces body 10.

[0025] The brace body 10 includes a labial-buccal surface B1 for covering the labial-buccal side A1 of the tooth, a lingual surface B2 for covering the lingual side A2 of the tooth, and an end face B3 connecting the labial-buccal surface B1 and the lingual surface B2. The labial-buccal surface B1, the end face B3, and the lingual surface B2 form a cavity S1, which is used to accommodate the tooth T1.

[0026] When wearing invisible braces 100, at least part of the labial-buccal surface B1 is in close contact with the labial-buccal side A1 of the tooth, at least part of the lingual surface B2 is in close contact with the lingual side A2 of the tooth, and at least part of the endoscopic surface B3 is in close contact with the upper endoscopic surface A3 of the tooth (when the tooth is an anterior tooth, the endoscopic surface B3 is in close contact with the incisal edge of the tooth; when the tooth is a posterior tooth, the endoscopic surface B3 is in close contact with the occlusal surface of the tooth).

[0027] The braces body 10 can cover the entire jaw, or the braces body 10 can cover only multiple teeth in the entire jaw.

[0028] The invisible braces 100 also include a connecting surface 20 that connects to the bottom edge B21 of the tongue surface B2 and forms a recessed area S with the tongue surface B2, and an action part 30 that connects to the side of the connecting surface 20 away from the bottom edge B21, the action part 30 being used to act on the tongue G.

[0029] Or, combine Figure 6 The invisible braces 100 do not include the active part 30. The connecting surface 20 on the side away from the recessed area S is used to act on the tongue G.

[0030] For example, the connecting surface 20 may include a tongue spur surface, which can be used to stimulate the tongue G to achieve correction of the tongue G.

[0031] In this embodiment, the connecting surface 20 and the lingual surface B2 cooperate to form a recessed area S. On one hand, the lingual surface B2 forming the recessed area S covers the lingual side A2 of the tooth, ensuring the overall coverage of the invisible aligner 100 on the tooth T1 and preventing the addition of the connecting surface 20 or the active part 30 from weakening the coverage of the tooth T1. On the other hand, the position of the connecting surface 20 can be freely adjusted, or the position of the active part 30 can be adjusted through the connecting surface 20 to achieve a personalized design of the connecting surface 20 and the active part 30.

[0032] Optionally, at least a portion of the lingual surface B2 of the connecting interface 20 may be in close contact with the lingual side A2 of the tooth, thereby improving the coverage of the lingual surface B2 with the lingual side A2 of the tooth. At least a portion of the labial / buccal surface B1 may be in close contact with the lingual side A1 of the tooth, and at least a portion of the endoscopic surface B3 may be in close contact with the incisal edge of the anterior teeth or the occlusal surface of the posterior teeth. However, this is not a limitation, and the specific arrangement can be determined according to the actual situation. For example, all the lingual surfaces B2 of the connecting interface 20 may be in close contact with the lingual side A2 of the tooth.

[0033] The teeth T1 enclosed by the braces body 10 can be mandibular teeth, and the action part 30 interacts with the tongue G to achieve the correction of the tongue G, such as tongue position adjustment and tongue position guidance. However, it is not limited to this, the teeth T1 enclosed by the braces body 10 can also be maxillary teeth, and the tongue G interacts with the invisible braces 100 located on the mandible to achieve the correction of the tongue G.

[0034] Optionally, the actuating part 30 and the connecting surface 20 have a connecting line L, which is higher than the bottom edge B21. The height difference between the connecting line L and the bottom edge B21 can be used to control the position of the actuating part 30.

[0035] The bottom edge B21 refers to the lower edge line of the tongue surface B2. The connecting surface 20 connects to the bottom edge B21 and extends upward to connect to the working part 30. A downwardly recessed area S is formed between the tongue surface B2 and the connecting surface 20.

[0036] Optionally, the brace body 10, connecting surface 20, and functional part 30 are integrally formed. For example, the brace body 10, connecting surface 20, and functional part 30 can be integrally formed by hot pressing or 3D printing.

[0037] Optional, combined Figure 3 The lingual surface B2 of the lingual side A2 used to wrap the first tooth T11 has a first length L1 in the first direction X, and the lingual side A2 of the first tooth T11 has a second length L2 in the first direction X. The ratio of the first length L1 to the second length L2 is in the range of 1 / 3-1. The first direction X is the direction in which the end face B3 faces the bottom edge B21 and extends along the lingual surface B2.

[0038] The first direction X is the direction of the curve, and the first direction X can be understood as the extension direction of the lingual side of the tooth A2.

[0039] Taking the lingual surface B2 of the lingual side A2 surrounding the first tooth T11 as an example, where the first tooth T11 is an anterior tooth, the length from one end of the lingual surface B2 connecting to the end face B3 to the bottom edge B21 is the first length L1, and the length from the incisal edge of the first tooth T11 to the gingival edge (i.e., the crown length) is the second length L2. The ratio of the first length L1 to the second length L2 is used to characterize the degree to which the lingual surface B2 surrounds the first tooth T11.

[0040] When the ratio of the first length L1 to the second length L2 is 1, the bottom edge B21 is set approximately to correspond to the gingival tip of the first tooth T11. The bottom edge B21 does not extend beyond the gingival tip of the first tooth T11, thus avoiding pressure on the gingival area by the lingual surface B2.

[0041] The length of the lingual surface B2 that covers other teeth can be set with reference to the length of the lingual surface B2 at the first tooth T11, and will not be repeated here.

[0042] Optionally, the action 30 can have multiple implementations.

[0043] In the first implementation, combined Figures 1 to 5 The functional part 30 includes a bearing surface 31 that connects to the connecting surface 20, and the bearing surface 31 is used to support the tongue part G.

[0044] The bearing surface 31 is directly connected to the connecting line L, and the bearing surface 31 is generally facing upwards. When wearing the invisible braces 100, the tongue part G can overlap the bearing surface 31. In this way, the position of the tongue part G can be adjusted, that is, tongue position guidance can be achieved.

[0045] For example, when the lingual G position is too low, it will unconsciously exert force on the front teeth, causing them to tilt forward. By raising the lingual G, the force exerted by the lingual G on the front teeth in its natural state can be reduced, thus preventing the forward tilting of the front teeth caused by the lingual G.

[0046] Alternatively, by elevating the tongue (G), it can apply force to the palate of the maxillary teeth, thereby expanding the maxillary arch. Adjusting the position of the tongue (G) can also achieve other functions, which will not be elaborated upon here.

[0047] In this implementation, the bearing surface 31 is connected to the tongue surface B2 via the connecting surface 20. The connecting surface 20 can raise the bearing surface 31 and control the raising height, thereby controlling the raising height of the tongue G.

[0048] Optionally, the bearing surface 31 extends generally in a horizontal direction.

[0049] "Extending roughly in a horizontal direction" means that the bearing surface 31 extends in the sagittal direction and / or along the dental arch direction, and does not limit the bearing surface 31 to an absolutely horizontal plane. The horizontal extension of the bearing surface 31 allows the bearing surface 31 to have a certain area, which can provide stable support for the tongue G.

[0050] The bearing surface 31 is generally flat or concave. When the bearing surface 31 is flat, it is horizontal. When the bearing surface 31 is concave, it is slightly concave to fit the shape of the tongue G, thereby improving wearing comfort.

[0051] Optionally, the bearing surface 31 has a left-right symmetrical structure, which can achieve stable support for the tongue G.

[0052] The mandible can be divided into a left half and a right half by the dental midline. The bearing surface 31 located in the left half and the bearing surface 31 located in the right half can be symmetrical structures.

[0053] Optionally, the bearing surface 31 includes a clearance portion S2 for avoiding the frenulum of the tongue G. The clearance portion S2 is configured such that when the tongue G is positioned at the bearing surface 31, the clearance portion S2 prevents the frenulum from interfering with the bearing surface 31, thereby improving patient comfort.

[0054] The clearance portion S2 can be a notch at the end 311 of the bearing surface 31 in the anterior region (the end of the bearing surface 31 away from the lingual surface B2), which can be used to make way for the frenulum. Alternatively, the clearance portion S2 can be achieved by retracting the end 311 of the bearing surface 31 in the anterior region. Retraction reduces the sagittal width W of the bearing surface 31, allowing the bearing surface 31 to support only the anterior region of the lingual G without interfering with the frenulum. This width W mainly refers to the width at the frenulum location; the width W in other areas can be appropriately increased to maintain the support effect on the lingual G.

[0055] The following describes several specific forms of the carrier surface 31 in this implementation.

[0056] In the first specific form, combined Figures 1 to 3 The bearing surface 31 is a discontinuous structure in the direction of the dental arch.

[0057] Specifically, the bearing surface 31 includes a spaced-apart anterior tooth bearing surface 31a and two spaced-apart posterior tooth bearing surfaces 31b. The two posterior tooth bearing surfaces 31b are located in the left and right halves of the jaw, respectively.

[0058] The distal side of the anterior tooth bearing surface 31a is disconnected from the mesial side of the posterior tooth bearing surface 31b. The entire bearing surface 31 is divided into three disconnected parts, and the connecting surface 20 can also be correspondingly divided into three disconnected parts. The three connecting surfaces 20 correspond one-to-one with the three bearing surfaces 31. At this time, the bottom edge B21 of part of the lingual surface B2 is not connected to the connecting surface 20.

[0059] The bearing surface 31a of the anterior region extends in the dental arch direction to cover at least a series of consecutive anterior teeth. Here, the bearing surface 31a of the anterior region extends in the dental arch direction to cover two central incisors, two lateral incisors, two canines, and two first premolars as an example, but it is not limited to this.

[0060] The bearing surface 31b of each posterior tooth region extends in the dental arch direction to cover at least one of the first molar, the second molar, or the third molar. Here, we take as an example that the extension of the bearing surface 31b of each posterior tooth region in the dental arch direction covers the first molar, the second molar, and the third molar simultaneously, but this is not a limitation.

[0061] In this specific embodiment, the sagittal width W of the anterior tooth bearing surface 31a is relatively small, which can form a clearance portion S2 to avoid interference with the frenulum. The small area of ​​the anterior tooth bearing surface 31a allows for auxiliary support of the lingual region G through two posterior tooth bearing surfaces 31b, achieving better lingual guidance.

[0062] In the second specific form, the two posterior tooth bearing surfaces 31b can be eliminated, leaving only the anterior tooth bearing surface 31a. To ensure support for the lingual region G, the width W in the sagittal direction of other areas of the anterior tooth bearing surface 31a, except for the clearance portion S2, can be increased.

[0063] In the third specific form, combined Figure 4 and Figure 5 The bearing surface 31 is a continuous structure in the dental arch direction. That is, the functional part 30 at this time includes only one continuous bearing surface 31.

[0064] The bearing surface 31 extends in the direction of the dental arch to cover at least a series of consecutive anterior teeth.

[0065] This specific example illustrates the bearing surface 31 extending along the dental arch direction to the first, second, or third molars on both sides. In the left half of the jaw, the bearing surface 31 extends from the central incisor to the first, second, or third molar. In the right half of the jaw, the bearing surface 31 extends from the central incisor to the first, second, or third molar.

[0066] Specifically, the bearing surface 31 extends from the central incisor to the third molar in the left half of the jaw, and from the central incisor to the third molar in the right half of the jaw. At this point, the bearing surface 31 extends across all teeth in the dental arch direction, providing a large area of ​​support for the tongue G.

[0067] The bearing surface 31 is U-shaped. The width of the U-shape in the sagittal direction is small, and the width W of the bearing surface 31 in the sagittal direction in the anterior tooth area is also small, which can form a clearance part S2 to avoid interference with the frenulum. Here, the hollow part in the middle of the "U"-shaped bearing surface 31 can be regarded as the clearance part S2.

[0068] In the second implementation, combined Figure 7 The functional part 30 includes a tongue-shaped surface 32 connected to the connecting surface 20, and the tongue-shaped surface 32 extends downward. The tongue-shaped surface 32 may include a plurality of spike-like structures, but is not limited thereto.

[0069] One end of the tongue piercing surface 32 is connected to the connecting line L, and the other end extends towards the palate. When wearing the invisible braces 100, the tongue G touches the tongue piercing surface 32 and cannot continue to protrude forward. The tongue piercing surface 32 can improve oral problems by restricting the protrusion of the tongue G.

[0070] Optionally, a cavity S3 is formed between the tongue-shaped surface 32 and the connecting surface 20, which facilitates the forming of the tongue-shaped surface 32 by hot-press molding process.

[0071] Combination Figure 8 One embodiment of this utility model also provides an invisible braces assembly 200, which includes multiple invisible braces 100.

[0072] Taking the invisible braces 100, including the bearing surface 31 supporting the tongue G, as an example, multiple invisible braces 100 include an invisible braces 100a in the Nth orthodontic step and an invisible braces 100b in the N+Mth orthodontic step. The height of the bearing surface 31 of the invisible braces 100a in the Nth orthodontic step is lower than the height of the bearing surface 31 of the invisible braces 100b in the N+Mth orthodontic step. Here, N and M are both positive integers.

[0073] When the height of the bearing surface 31 of the clear aligner 100b in the N+M treatment step is higher than the height of the bearing surface 31 of the clear aligner 100a in the Nth treatment step, that is, in the N+M treatment step, the height of the bearing surface 31 is raised. Raising the height of the bearing surface 31 allows for further elevation of the tongue G. Gradually raising the tongue G as the treatment steps progress improves the comfort of the tongue G during the elevation process, allowing the tongue G to gradually adapt to increasingly higher elevation positions.

[0074] The height of the bearing surface 31 can be adjusted by controlling the height of the connecting surface 20. For example, while keeping the tongue surface B2 of the Nth and N+Mth corrective steps consistent, the vertical height of the connecting surface 20 of the Nth corrective step can be set to H1, and the vertical height of the connecting surface 20 of the N+Mth corrective step can be set to H2. When H2 is greater than H1, the height of the bearing surface 31 of the N+Mth corrective step can be higher than the height of the bearing surface 31 of the Nth corrective step.

[0075] The height of the bearing surface 31 can also be adjusted in other ways. For example, adjusting the length of the tongue surface B2 along the first direction X, adjusting the angle between the tongue surface B2 and the connecting surface 20, etc.

[0076] For different orthodontic steps, in addition to adjusting the height of the bearing surface 31, the area of ​​the bearing surface 31 in the horizontal direction, the angle between the tongue surface B2 and the connecting surface 20, etc., can also be adjusted as needed.

[0077] When the clear aligner 100 includes a lingual piercing surface 32, the lingual piercing surface 32 of the clear aligner 100 may have different heights at different treatment stages. Alternatively, the lingual piercing surface 32 of the clear aligner 100 may have different depths at different treatment stages. Depth refers to the distance between the lingual piercing surface 32 and the lingual surface B2 in the sagittal direction, that is, the position of the lingual piercing surface 32 of the clear aligner 100 in the sagittal direction is different at different treatment stages.

[0078] The height and depth of the tongue-piercing surface 32 can be adjusted in various ways. For example, the height of the tongue-piercing surface 32 can be adjusted by controlling the height of the connecting surface 20, and the depth of the tongue-piercing surface 32 can be adjusted by controlling the angle between the connecting surface 20 and the tongue surface B2, the angle between the tongue-piercing surface 32 and the connecting surface 20, etc.

[0079] For different orthodontic steps, in addition to adjusting the height and depth of the tongue puncture surface 32, the size, shape, angle between the tongue surface B2 and the connecting surface 20, and the angle between the tongue puncture surface 32 and the connecting surface 20 can also be adjusted as needed.

[0080] Combination Figure 9 One embodiment of this utility model also provides an invisible braces assembly 400, including invisible braces 100 and opposing invisible braces 300 that match the opposing teeth T2.

[0081] In summary, the connecting surface 20 of this invention, in conjunction with the lingual surface B2, forms a recessed area S. On one hand, the lingual surface B2, which forms the recessed area S, wraps around the lingual side A2 of the tooth, ensuring the overall coverage of the invisible aligner 100 on the tooth T1 and preventing the addition of the connecting surface 20 or the active part 30 from weakening the coverage of the tooth T1. On the other hand, the position of the connecting surface 20 can be freely adjusted, or the position of the active part 30 can be adjusted through the connecting surface 20, to achieve a personalized design of the connecting surface 20 and the active part 30.

[0082] 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.

[0083] 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 invisible braces, characterized in that, The aligner includes a brace body, which includes a labial / buccal surface for covering the labial / buccal side of the teeth, a lingual surface for covering the lingual side of the teeth, and an end face connecting the labial / buccal surface and the lingual surface. The invisible aligner also includes a connecting surface that connects to the bottom edge of the lingual surface and forms a recessed area with the lingual surface. The side of the connecting surface away from the recessed area is used to act on the tongue. Alternatively, the invisible aligner also includes an action part that connects to the side of the connecting surface away from the bottom edge, and the action part is used to act on the tongue.

2. The invisible braces according to claim 1, characterized in that, The side of the connecting surface away from the recessed area is used to act on the tongue, and the connecting surface includes a tongue-piercing surface.

3. The invisible braces according to claim 1, characterized in that, The invisible braces also include an active part that connects the connecting surface to the side away from the bottom edge, and there is a connecting line between the active part and the connecting surface, the connecting line being higher than the bottom edge.

4. The invisible braces according to claim 1, characterized in that, The invisible braces also include a functional part that connects the connecting surface to the side away from the bottom edge, the functional part including a bearing surface that connects to the connecting surface and the bearing surface is used to support the tongue.

5. The invisible braces according to claim 4, characterized in that, The bearing surface extends generally in the horizontal direction and is generally a plane or a concave curved surface.

6. The invisible braces according to claim 4, characterized in that, The bearing surface is a continuous structure in the direction of the dental arch, and the extension range of the bearing surface in the direction of the dental arch covers at least a continuous number of anterior teeth.

7. The invisible braces according to claim 6, characterized in that, The bearing surface extends in the direction of the dental arch to the first, second, or third molar on the left and right sides, and the bearing surface is U-shaped.

8. The invisible braces according to claim 4, characterized in that, The bearing surface is a discontinuous structure in the dental arch direction. The bearing surface includes an anterior bearing surface and two posterior bearing surfaces spaced apart from each other. The anterior bearing surface extends in the dental arch direction to cover at least a series of consecutive anterior teeth. The posterior bearing surface extends in the dental arch direction to cover at least one of the first molar, the second molar, or the third molar.

9. The invisible braces according to claim 4, characterized in that, The bearing surface has a left-right symmetrical structure.

10. The invisible braces according to claim 4, characterized in that, The bearing surface includes a clearance portion for avoiding the tongue tether.

11. The invisible braces according to claim 1, characterized in that, The invisible braces also include an active part that connects the connecting surface to the side away from the bottom edge, the active part including a tongue-shaped surface that connects to the connecting surface and extends downward.

12. The invisible braces according to claim 11, characterized in that, A cavity is formed between the tongue-piercing surface and the connecting surface.

13. The invisible braces according to claim 1, characterized in that, The invisible braces correspond to the upper teeth, and the brace body, the connecting surface, and the functional part are integrally formed.

14. The invisible braces according to claim 1, characterized in that, At least part of the tongue surface is in close contact with the lingual side of the teeth.

15. A set of invisible braces, characterized in that, The invention includes multiple invisible braces as described in any one of claims 4-10, wherein the multiple invisible braces include an invisible brace for the Nth orthodontic step and an invisible brace for the N+Mth orthodontic step, wherein the height of the bearing surface of the invisible brace for the Nth orthodontic step is lower than the height of the bearing surface of the invisible brace for the N+Mth orthodontic step, wherein N and M are both positive integers.

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