Dental orthodontic appliances with ridges

Abstract

This invention discloses a dental orthodontic appliance with a ridge, comprising an appliance body forming a cavity to accommodate teeth, and a ridge connecting the appliance body, the ridge protruding from the appliance body in a direction away from the cavity. By providing a ridge protruding away from the cavity on the appliance body, this invention increases the moment of inertia of the entire dental orthodontic appliance. This moment of inertia enhances the appliance's resistance to bending in the direction away from the cavity, which corresponds to the main force direction when removing the appliance. In other words, the ridge increases the local stiffness of the orthodontic appliance, thus preventing deformation or breakage. Furthermore, since the appliance directly includes the ridge, patients can achieve the above effects simply by wearing the appliance, making it convenient and providing a better user experience.

Description

Technical Field

[0001] This invention relates to the field of orthodontic technology, and more particularly to a dental orthodontic appliance with a ridge. Background Technology

[0002] During the use of orthodontic appliances, additional force is required to repeatedly wear and remove them. When the external force is large, the orthodontic appliance may deform or break, affecting the use of the appliance or preventing it from achieving the desired orthodontic effect. Summary of the Invention

[0003] The purpose of this invention is to provide a dental orthodontic appliance with ridges that can prevent the dental orthodontic appliance from deforming or breaking.

[0004] To achieve one of the above-mentioned objectives, one embodiment of the present invention provides a dental orthodontic appliance with a ridge, comprising an appliance body forming a cavity for accommodating teeth, and a ridge connecting the appliance body, the ridge protruding from the appliance body in a direction away from the cavity.

[0005] As a further improvement of one embodiment of the present invention, the ridge is strip-shaped.

[0006] As a further improvement of one embodiment of the present invention, the ridge includes a receiving cavity communicating with the cavity.

[0007] As a further improvement of one embodiment of the present invention, the receiving cavity is integrally formed with the body of the orthodontic appliance.

[0008] As a further improvement of one embodiment of the present invention, the ridge further includes a filling portion fixed within the receiving cavity.

[0009] As a further improvement of one embodiment of the present invention, the ridge is fixed to the side surface of the orthodontic body away from the cavity.

[0010] As a further improvement of one embodiment of the present invention, the ridge extends in a direction parallel to the mesiodistal direction.

[0011] As a further improvement of one embodiment of the present invention, the extension direction of the ridge is perpendicular to the mesiodistal direction.

[0012] As a further improvement of one embodiment of the present invention, the angle formed between the extension direction of the ridge and the mesiodistal direction is an acute angle.

[0013] As a further improvement of one embodiment of the present invention, the ridge is located on the buccal surface, lingual surface or occlusal surface of the orthodontic appliance body.

[0014] As a further improvement of one embodiment of the present invention, the ridge is provided corresponding to the anterior and / or posterior regions of the tooth to be treated.

[0015] As a further improvement of one embodiment of the present invention, the ridge is provided corresponding to at least one of the tooth surface of the tooth to be treated, the interdental space, or the cavitation area.

[0016] As a further improvement of one embodiment of the present invention, the ridge has a first height in the direction away from the cavity, and the maximum value of the first height is in the range of 0.1mm-10mm.

[0017] As a further improvement of one embodiment of the present invention, the ridge has a first length in the extending direction of the ridge, the first length being greater than 0.5 mm.

[0018] As a further improvement of one embodiment of the present invention, the ridge has a first width in a direction that is perpendicular to both the direction away from the cavity and the extension direction of the ridge, wherein the maximum value of the first width is in the range of 0.2mm-8mm.

[0019] As a further improvement of one embodiment of the present invention, in the direction away from the cavity, the outer contour of the cross section of the ridge is rectangular, trapezoidal, arc-shaped, triangular, polygonal, or "M"-shaped.

[0020] As a further improvement of one embodiment of the present invention, the dental orthodontic appliance includes a plurality of ridges located on the appliance body.

[0021] As a further improvement of one embodiment of the present invention, the plurality of ridges are spaced apart.

[0022] As a further improvement of one embodiment of the present invention, the plurality of ridges are interconnected to form a combined ridge.

[0023] As a further improvement of one embodiment of the present invention, the combined ridge includes a free end.

[0024] As a further improvement of one embodiment of the present invention, the combined ridges enclose a closed area.

[0025] As a further improvement of one embodiment of the present invention, the occlusal surface of the orthodontic appliance body includes a transition zone corresponding to the interdental space of the tooth to be treated, and the transition zone includes the ridge.

[0026] As a further improvement of one embodiment of the present invention, the transition zone further includes a mating zone connecting the ridge, wherein the first gap between the ridge and the adjacent tooth gap is greater than the second gap between the mating zone and the adjacent tooth gap.

[0027] As a further improvement of one embodiment of the present invention, the dental orthodontic appliance includes two ridges spaced apart, which are connected by the mating area.

[0028] As a further improvement of one embodiment of the present invention, the ridge includes a recessed portion and two protrusions located on both sides of the recessed portion, wherein the recessed portion is closer to the adjacent tooth space than the protrusions.

[0029] As a further improvement of one embodiment of the present invention, the thickness of the ridge is greater than 0.2 mm.

[0030] As a further improvement of one embodiment of the present invention, the ridge includes an inner wall near the interdental space, and a cavity is formed between the inner wall and the interdental space. In the direction from the buccal surface of the orthodontic body to the lingual surface, the maximum value of the second width of the cavity is 0.5 mm to 5 mm.

[0031] As a further improvement of one embodiment of the present invention, the adjacent tooth gap is located between the first tooth and the second tooth, the occlusal surface includes a first occlusal surface and a second occlusal surface that respectively match the first tooth and the second tooth, and the ridge includes a first end and a second end that are disposed opposite to each other in its extension direction, the first end being close to the first occlusal surface and the second end being close to the second occlusal surface.

[0032] As a further improvement of one embodiment of the present invention, an extraction area is included between the first tooth and the second tooth, the orthodontic appliance body includes a vacuolar area corresponding to the extraction area, and the transition area covers the vacuolar area.

[0033] As a further improvement of one embodiment of the present invention, the first end is disposed near the cheek surface of the orthodontic body, and the second end is disposed near the tongue surface of the orthodontic body.

[0034] As a further improvement of one embodiment of the present invention, the extension direction of the ridge is parallel to the mesiodistal direction.

[0035] As a further improvement of one embodiment of the present invention, a first cross section is defined on the dental orthodontic appliance. The first cross section passes through the ridge and is perpendicular to the mesiodistal direction. The intersection area of ​​the ridge and the first cross section includes the lowest point near the buccal or lingual surface. In the direction from the buccal surface of the dental orthodontic appliance to the lingual surface, the distance between the lowest point and the gingival end located within the first cross section ranges from 0.5 mm to 8 mm.

[0036] As a further improvement of one embodiment of the present invention, the lowest point includes a first lowest point near the buccal surface and a second lowest point near the lingual surface. In the direction from the buccal surface to the lingual surface of the dental orthodontic appliance, the first lowest point has a first distance between it and the gingival end located within the first cross section and on the buccal surface, and the second lowest point has a second distance between it and the gingival end located within the first cross section and on the lingual surface. The range of the first distance and the second distance is 0.5mm-4mm.

[0037] As a further improvement of one embodiment of the present invention, the range of the first spacing and the second spacing is 1mm-3.5mm.

[0038] As a further improvement of one embodiment of the present invention, a second cross section is defined on the dental orthodontic appliance. The second cross section passes through the ridge and is perpendicular to the buccal surface toward the lingual surface. The intersection area of ​​the first occlusal surface and the second cross section includes a first highest point near the transition area. The intersection area of ​​the second occlusal surface and the second cross section includes a second highest point near the transition area. The junction point of the first end of the ridge and the second cross section is a first junction point. The junction point of the second end and the second cross section is a second junction point. The first highest point is farther from the gingival end than the first junction point. The second highest point is farther from the gingival end than the second junction point.

[0039] As a further improvement of one embodiment of the present invention, in the direction of the occlusal surface of the dental orthodontic appliance toward the gingival end, there is a first distance between the first highest point and the gingival end, a second distance between the first junction point and the gingival end, a third distance between the second highest point and the gingival end, and a fourth distance between the second junction point and the gingival end, wherein the ratio of the second distance to the first distance is not less than 20%, and the ratio of the fourth distance to the third distance is not less than 20%.

[0040] As a further improvement of one embodiment of the present invention, the ratio of the second distance to the first distance is not greater than 95%, and the ratio of the fourth distance to the third distance is not greater than 95%.

[0041] As a further improvement of one embodiment of the present invention, the second distance is 40%-80% of the first distance, and the fourth distance is 40%-80% of the third distance.

[0042] As a further improvement of one embodiment of the present invention, in the direction of the occlusal surface of the dental orthodontic appliance toward the gingival end, any point of the dental orthodontic appliance has a vertical distance between the gingival end and the dental orthodontic appliance. The vertical distance gradually decreases between the first highest point and the first junction point, and the vertical distance gradually decreases between the second highest point and the second junction point.

[0043] As a further improvement of one embodiment of the present invention, the vertical distance remains constant or gradually changes between the first boundary point and the second boundary point.

[0044] To achieve one of the above-mentioned objectives, one embodiment of the present invention provides a dental orthodontic appliance with a ridge, comprising an appliance body forming a cavity for accommodating teeth, wherein the occlusal surface of the appliance body includes a transition region corresponding to the interdental space of the tooth to be treated, the transition region including a ridge, and the ridge forming a cavity between the inner wall of the interdental space and the interdental space.

[0045] As a further improvement of one embodiment of the present invention, the transition zone further includes a mating zone connecting the ridge, wherein the first gap between the ridge and the adjacent tooth gap is greater than the second gap between the mating zone and the adjacent tooth gap.

[0046] As a further improvement of one embodiment of the present invention, the dental orthodontic appliance includes two ridges spaced apart, which are connected by the mating area.

[0047] As a further improvement of one embodiment of the present invention, the ridge further includes an outer wall away from the adjacent tooth gap, and the thickness between the outer wall and the inner wall is greater than 0.2 mm.

[0048] As a further improvement of one embodiment of the present invention, in the direction from the cheek surface of the orthodontic body to the tongue surface, the cross-section of the ridge is rectangular, trapezoidal, arc-shaped, triangular, polygonal, or "M"-shaped.

[0049] Compared with the prior art, the beneficial effect of one embodiment of the present invention is that: by providing ridges protruding in the direction away from the cavity on the body of the orthodontic appliance, the moment of inertia of the entire dental orthodontic appliance can be increased. This moment of inertia can improve the ability of the dental orthodontic appliance to resist bending in the direction away from the cavity, thus avoiding deformation or breakage of the dental orthodontic appliance.

[0050] In addition, the orthodontic appliance of this embodiment directly includes a ridge, and patients can achieve the above-mentioned effect simply by wearing the orthodontic appliance, which is convenient to use and provides a better user experience. Attached Figure Description

[0051] Figure 1 This is a perspective view of a dental orthodontic appliance with ridges according to an embodiment of the present invention.

[0052] Figure 2 yes Figure 1 A cross-sectional view of the AA, in which the teeth to be treated are shown;

[0053] Figure 3 This is a digital dental model with added components according to one embodiment of the present invention;

[0054] Figure 4 This is a cross-sectional view of a dental orthodontic appliance with ridges in conjunction with a tooth to be treated, according to a specific embodiment of the present invention.

[0055] Figure 5 This is a cross-sectional view of a dental orthodontic appliance with ridges used in conjunction with a tooth to be treated, according to another specific embodiment of the present invention.

[0056] Figure 6 This is a perspective view of a dental orthodontic appliance with ridges located on the occlusal surface of two posterior molars, according to a specific example of the present invention.

[0057] Figure 7 yes Figure 6 Sectional view of AA;

[0058] Figure 8 This is a perspective view of a dental orthodontic appliance with ridges located on the occlusal surface of the posterior and premolars, according to a specific example of the present invention.

[0059] Figure 9 This is a perspective view of a dental orthodontic appliance with ridges located on the occlusal surface of two premolars, according to a specific example of the present invention.

[0060] Figure 10 This is a perspective view of a dental orthodontic appliance of a specific example of the present invention, in which the ridges are located on the premolars and canines and on the occlusal surface.

[0061] Figure 11 This is a perspective view of a dental orthodontic appliance with ridges located on the canines and incisors and on the occlusal surface, according to a specific example of the present invention.

[0062] Figure 12 This is a perspective view of a dental orthodontic appliance with ridges located on the buccal surfaces of two premolars, according to a specific example of the present invention.

[0063] Figure 13 yes Figure 12 Sectional view of AA;

[0064] Figure 14 This is a perspective view of a dental orthodontic appliance with a ridge located on the posterior molar and on the buccal surface, according to a specific example of the present invention.

[0065] Figure 15 yes Figure 14 Sectional view of AA;

[0066] Figure 16 This is a perspective view of a dental orthodontic appliance with a ridge located on the posterior molar and on the lingual surface, according to a specific example of the present invention.

[0067] Figure 17 yes Figure 16 Sectional view of AA;

[0068] Figure 18 This is a perspective view of a dental orthodontic appliance with a ridge located on the posterior molar and on the buccal surface, according to a specific example of the present invention.

[0069] Figure 19 yes Figure 18 Sectional view of AA;

[0070] Figure 20 This is a perspective view of a dental orthodontic appliance of a specific example of the present invention, in which the ridge extends from the posterior molar to the premolar and is located on the buccal surface.

[0071] Figure 21 yes Figure 20 Sectional view of AA;

[0072] Figure 22 yes Figure 20 Sectional view of BB;

[0073] Figure 23 This is a perspective view of a dental orthodontic appliance of the present invention, in which multiple ridges form a combination of ridges with free ends.

[0074] Figure 24 This is a perspective view of a dental orthodontic appliance in which multiple ridges form a combination of ridges with a closed region, according to a specific example of the present invention.

[0075] Figure 25 This is a perspective view of a tooth to be treated according to a specific embodiment of the present invention;

[0076] Figure 26 In a specific embodiment of the present invention, the ridge is located on the occlusal surface and is... Figure 25 A 3D diagram of a dental orthodontic appliance that works in conjunction with the teeth to be treated.

[0077] Figure 27 yes Figure 26 Sectional view of AA;

[0078] Figure 28 yes Figure 26 Sectional view of CC;

[0079] Figure 29 This is a 3D diagram of existing dental orthodontic appliances;

[0080] Figure 30 yes Figure 29 Sectional view of AA;

[0081] Figures 31 to 36 This is a schematic diagram of the cross-section of a convex ridge according to an embodiment of the present invention;

[0082] Figure 37 This is a perspective view of a dental orthodontic appliance with multiple ridges on the occlusal surface according to other embodiments of the present invention;

[0083] Figure 38 This is a three-dimensional view of a tooth to be treated with an extraction area, according to another embodiment of the present invention;

[0084] Figure 39 Other embodiments of the present invention have a cavitation region and are related to Figure 38 A three-dimensional diagram of a dental orthodontic appliance that works in conjunction with the teeth to be treated. Detailed Implementation

[0085] 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 scope of protection of the present invention.

[0086] Combination Figure 1 and Figure 2 This is a dental orthodontic appliance 100 with ridges 10 according to one embodiment of the present invention.

[0087] The dental orthodontic appliance 100 includes an appliance body 101 that forms a cavity S for accommodating teeth, and a ridge 10 that connects to the appliance body 101.

[0088] The ridge 10 protrudes from the body of the orthodontic appliance 101 in a direction away from the cavity S.

[0089] In this embodiment, by providing a ridge 10 protruding in a direction away from the cavity S on the orthodontic appliance body 101, the moment of inertia of the entire dental orthodontic appliance 100 relative to the rotation axis can be increased. This moment of inertia can improve the ability of the dental orthodontic appliance 100 to resist bending in a direction away from the cavity S. The direction away from the cavity S is the main force direction when the dental orthodontic appliance is removed. That is, the provision of the ridge 10 can improve the local stiffness of the orthodontic appliance 100, thereby avoiding deformation or breakage of the dental orthodontic appliance 100.

[0090] In addition, the dental orthodontic appliance 100 of this embodiment directly includes the ridge 10, and the patient can achieve the above-mentioned effect by directly wearing the dental orthodontic appliance 100, which is convenient to use and provides a better user experience.

[0091] It should be noted that in the case of orthodontic treatment using dental orthodontic appliance 100, the treatment is usually divided into multiple successive stages (e.g., 20 to 40 successive stages). Each stage corresponds to one dental orthodontic appliance 100. Depending on the specific needs of different stages, it is possible to add or not add ridges 10. The addition parameters of ridges 10 can be freely designed according to the specific needs of different stages. The addition parameters include the number, position, and shape of ridges 10.

[0092] In this embodiment, the ridge 10 is strip-shaped.

[0093] Here, "the ridge 10 is strip-shaped" means that the ridge 10 extends to a certain length in a certain direction. Of course, in other embodiments, the ridge 10 can also be in other shapes, such as dot-shaped.

[0094] In this embodiment, the ridge 10 has a first height in the direction X away from the cavity S, and the maximum value of the first height is in the range of 0.1mm-10mm.

[0095] In the extending direction Y of the ridge 10, the ridge 10 has a first length, which is greater than 0.5 mm.

[0096] Here, the extension direction Y of the ridge 10 is the mesial-distal direction Y. Of course, the ridge 10 can also extend in other directions.

[0097] It should be noted that the actual direction of the mesiodistal direction Y changes depending on the region. The mesiodistal direction Y can be regarded as the direction from one tooth of the ridge 10 to the adjacent tooth.

[0098] The ridge 10 has a first width in a direction Z that is perpendicular to both the direction X away from the cavity S and the extension direction Y of the ridge 10. The maximum value of the first width is in the range of 0.2mm-8mm.

[0099] Here, direction Z is the direction from the cheek surface A1 of the orthodontic body 101 toward the tongue surface A2. Of course, when directions X and Y change, direction Z will also change accordingly.

[0100] In this embodiment, in the direction away from the cavity S, the outer contour of the cross section of the ridge 10 is rectangular, trapezoidal, arc-shaped, triangular, polygonal, or "M"-shaped, but is not limited thereto.

[0101] Here, the outer contour refers to the outer contour of a single ridge 10, and the "M" shape means that the outer contour has one or more depressions, and the degree of the depression is not limited.

[0102] In this embodiment, the ridge 10 includes a receiving cavity S1 that communicates with the cavity S, and the receiving cavity S1 is integrally formed with the orthodontic body 101.

[0103] Combination Figure 3 Suitable adders 201 can be pre-designed on the digital dental model 200, and the addition parameters of adders 201 are consistent with the addition parameters of the actual required ridge 10.

[0104] Then, a dental model with an additive 201 is made using a light-cured material, and a corresponding negative model is obtained by hot pressing on the dental model using a hot pressing film. Then, the excess part of the negative model is cut off, and finally a dental orthodontic appliance 100 with a ridge 10 (i.e., a receiving cavity S1) is obtained.

[0105] It should be noted that the addition 201 can also be replaced by changing the curvature of a specific area on the digital dental model 200.

[0106] In one specific implementation, combined with Figure 4 The ridge 10 also includes a filling part 11 fixed in the receiving cavity S1.

[0107] Here, the filling part 11, as part of the dental orthodontic appliance 100, can be fixed to the inner wall of the receiving cavity S1. The filling part 11 can improve the strength of the ridge 10. The filling part 11 can be a pre-formed filling part 11, or the filling part 11 can be directly formed in the receiving cavity S1 through a filling and curing process.

[0108] In another specific embodiment, combined with Figure 5 The ridge 10 is fixed to the side surface of the orthodontic body 101 away from the cavity S. That is, the receiving cavity S1 as described above is eliminated, and the ridge 10 is directly fixed to the outer surface of the orthodontic body 101.

[0109] In this embodiment, the ridge 10 is provided corresponding to the anterior and / or posterior regions of the tooth T to be treated.

[0110] The ridge 10 is located on the buccal surface A1, lingual surface A2, or occlusal surface A3 of the orthodontic appliance body 101.

[0111] In addition, the ridge 10 is provided for at least one of the tooth surface of the tooth T to be treated, the interdental space P, or the cavitation area.

[0112] Here, "tooth surface" refers to the buccal surface, lingual surface, or occlusal surface of each tooth T to be treated; "interdental space P" refers to the area between two adjacent teeth T to be treated; "vacuole area" refers to the extraction area or the area of ​​a larger gap; and "at least one of them" means that a ridge 10 can simultaneously cover one or more areas of the tooth surface of the tooth T to be treated, the interdental space P, or the vacuole area.

[0113] The ridge 10 can have multiple extension directions. For example, the extension direction of the ridge 10 is parallel to the mesiodistal direction Y, or the extension direction of the ridge 10 is perpendicular to the mesiodistal direction Y, or the angle formed between the extension direction of the ridge 10 and the mesiodistal direction Y is an acute angle, and the ridge 10 is straight or curved.

[0114] The dental orthodontic appliance 100 may include one or more ridges 10 located on the appliance body 101.

[0115] When there are multiple ridges 10, the multiple ridges 10 are distributed at intervals, or the multiple ridges 10 are connected to each other.

[0116] Below, we introduce several specific examples of the dental orthodontic appliance 100.

[0117] Combination Figure 6 and Figure 7 The dental orthodontic appliance 100 includes two ridges 10 on the occlusal surface A3 of the posterior tooth region. The two ridges 10 are spaced apart and the extension direction of the two ridges 10 is parallel to the mesiodistal direction Y. One ridge 10 is located near the buccal surface A1, and the other ridge 10 is located near the lingual surface A2.

[0118] Specifically, the ridge 10 mainly corresponds to the adjacent tooth gap P, and the adjacent tooth gap P corresponds to the gap between two adjacent posterior molars.

[0119] Combination Figure 8 The dental orthodontic appliance 100 includes two ridges 10 on the occlusal surface A3 located in the posterior and anterior regions. The two ridges 10 are spaced apart, and the extension direction of the two ridges 10 is parallel to the mesiodistal direction Y. One ridge 10 is located near the buccal surface A1, and the other ridge 10 is located near the lingual surface A2.

[0120] Specifically, the ridge 10 mainly corresponds to the adjacent tooth gap P, and the adjacent tooth gap P corresponds to the gap between the posterior molar and the premolar.

[0121] Combination Figure 9 The dental orthodontic appliance 100 includes two ridges 10 on the occlusal surface A3 of the anterior teeth region. The two ridges 10 are spaced apart and the extension direction of the two ridges 10 is parallel to the mesiodistal direction Y. One ridge 10 is located near the buccal surface A1, and the other ridge 10 is located near the lingual surface A2.

[0122] Specifically, the ridge 10 mainly corresponds to the adjacent tooth gap P, and the adjacent tooth gap P corresponds to the gap between two premolars.

[0123] Combination Figure 10The dental orthodontic appliance 100 includes two ridges 10 on the occlusal surface A3 of the anterior teeth region. The two ridges 10 are spaced apart and the extension direction of the two ridges 10 is parallel to the mesiodistal direction Y. One ridge 10 is located near the buccal surface A1, and the other ridge 10 is located near the lingual surface A2.

[0124] Specifically, the ridge 10 mainly corresponds to the adjacent tooth gap P, and the adjacent tooth gap P corresponds to the gap between the premolar and the canine.

[0125] Combination Figure 11 The dental orthodontic appliance 100 includes a ridge 10 on the occlusal surface A3 in the anterior region, and the extension direction of the ridge 10 is parallel to the mesiodistal direction Y.

[0126] Specifically, the ridge 10 mainly corresponds to the adjacent tooth gap P, and the adjacent tooth gap P corresponds to the gap between the canine and the incisor.

[0127] Combination Figure 12 and Figure 13 The dental orthodontic appliance 100 includes a ridge 10 on the buccal surface A1 of the anterior tooth region, and the ridge 10 extends in a direction parallel to the mesiodistal direction Y. The ridge 10 is mainly positioned to correspond to the interdental spaces of the buccal surface A1.

[0128] Here, when the ridge 10 is located on the buccal surface A1 and the extension direction of the ridge 10 is parallel to the mesiodistal direction Y, in order not to affect the overall fit between the dental orthodontic appliance 100 and the tooth T to be treated, the ridge 10 should not be positioned too close to the gingival end A4.

[0129] Combination Figure 14 and Figure 15 The dental orthodontic appliance 100 includes a ridge 10 on the buccal surface A1 of the posterior tooth region, and the ridge 10 extends in a direction parallel to the mesiodistal direction Y. The ridge 10 is disposed on the tooth surface of the buccal surface A1.

[0130] Combination Figure 16 and Figure 17 The dental orthodontic appliance 100 includes a ridge 10 on the lingual surface A2 in the posterior tooth region, and the ridge 10 extends in a direction parallel to the mesiodistal direction Y. The ridge 10 is provided on the tooth surface corresponding to the lingual surface A2.

[0131] Combination Figure 18 and Figure 19 The dental orthodontic appliance 100 includes a ridge 10 on the buccal surface A1 in the posterior tooth region, and the ridge 10 extends in a direction perpendicular to the mesiodistal direction Y. The ridge 10 is disposed on the tooth surface of the buccal surface A1.

[0132] Combination Figures 20 to 22The dental orthodontic appliance 100 includes a ridge 10 on the buccal surface A1 of the posterior tooth region, and the angle formed between the extension direction of the ridge 10 and the mesiodistal direction Y is an acute angle, that is, the ridge 10 is tilted at this time, and the ridge 10 simultaneously covers the tooth surface of the buccal surface A1 and the adjacent tooth space P.

[0133] Combination Figure 23 The dental orthodontic appliance 100 includes three ridges 10 located on the buccal surface A1. The three ridges 10 are connected to each other to form a combined ridge 10'. The combined ridge 10' is mainly set to the adjacent tooth gap P on the buccal surface A1, and the adjacent tooth gap P corresponds to the gap between the posterior molar and the premolar.

[0134] Specifically, the combined ridge 10' is roughly in the shape of an "I" character. The extension directions of the upper and lower ridges 10 are parallel to the mesiodistal direction Y, and the extension direction of the middle ridge 10 is perpendicular to the mesiodistal direction Y. The combined ridge 10' includes a free end.

[0135] Here, "free end" refers to the end of one or more ridges 10 that is not connected to other ridges 10. All four ends of the "I"-shaped ridge 10 are free ends.

[0136] Combination Figure 24 The dental orthodontic appliance 100 includes three ridges 10 located on the buccal surface A1. The three ridges 10 are connected to each other to form a combined ridge 10'. The combined ridge 10' is mainly set to the adjacent tooth gap P on the buccal surface A1, and the adjacent tooth gap P corresponds to the gap between the posterior molar and the premolar.

[0137] Specifically, the combined ridges 10' are connected end to end to form a closed area, which is roughly triangular in shape. At this time, the combined ridges 10' do not have free ends.

[0138] It is understood that the foregoing is merely an illustrative example of various specific examples of the dental orthodontic appliance 100, and dental orthodontic appliances obtained by making other improvements based on these specific examples are also included within the scope of protection of this invention.

[0139] The following is a further description of a specific embodiment in which the ridge 10 is located on the occlusal surface A3 of the orthodontic appliance body 101.

[0140] Combination Figures 25 to 28 The occlusal surface A3 of the orthodontic appliance body 101 includes a transition area A33 corresponding to the adjacent tooth space P of the tooth to be treated T. The transition area A33 includes a ridge 10, and here the ridge 10 is located in the posterior tooth area as an example.

[0141] Here, the interdental space P is located between the first tooth T1 and the second tooth T2. The occlusal surface A3 of the orthodontic appliance body 101 includes a first occlusal surface A31 and a second occlusal surface A32 that match the first tooth T1 and the second tooth T2 respectively. The transition area A33 connects the first occlusal surface A31 and the second occlusal surface A32.

[0142] Here, the first occlusal surface A31 and the second occlusal surface A32 are defined as the surfaces that interact with the opposing jaw.

[0143] The transition region A33 in this specific embodiment includes a ridge 10. The inner wall 12 of the ridge 10 near the adjacent tooth gap P forms a cavity S2 with the adjacent tooth gap P, thereby increasing the moment of inertia of the transition region A33.

[0144] Here, in the direction from the buccal surface A1 of the orthodontic body 101 toward the lingual surface A2, the maximum range of the second width of the cavity S2 is 0.5mm-5mm.

[0145] Combination Figure 29 and Figure 30 The dental orthodontic appliance 300 is a type of appliance without ridges in the prior art. It can be seen that, in the direction from the occlusal surface 301 toward the gingival end 302, the cross section of the dental orthodontic appliance 300 corresponding to the interdental space is roughly a flat arc shape. At this time, if a force F in the direction of M is applied to the gingival end 302, the dental orthodontic appliance 300 is prone to deformation or breakage due to the small moment of inertia at this time and the large force F. The direction N is the direction away from the cavity S, and the direction N corresponds to the main force direction when removing the dental orthodontic appliance 300.

[0146] In this specific embodiment, the transition region A33 has a ridge 10, which is equivalent to... Figure 30 The area within the dashed box has been reinforced to enhance the moment of inertia of the orthodontic appliance 100 at that location. In this case, when a force F in the direction of M is applied to the gingival end A4, the orthodontic appliance 100 can avoid deformation and breakage.

[0147] In other words, by adding a ridge 10 to the transition zone A33, the local stiffness of the transition zone A33 can be improved, thereby preventing the dental orthodontic appliance 100 from deforming or breaking.

[0148] In this specific embodiment, we continue to combine Figures 25 to 27 The transition zone A33 also includes a mating zone A34 connecting the ridge 10. The first gap between the ridge 10 and the adjacent tooth gap P is larger than the second gap between the mating zone A34 and the adjacent tooth gap P, and the ridge 10 and the mating zone A34 transition smoothly.

[0149] In other words, the mating zone A34 is closer to the adjacent tooth space P than the ridge 10.

[0150] It should be noted that the participants Figure 27 The interdental space P specifically refers to the side of the first tooth T1 near the second tooth T2, and the side of the second tooth T2 near the first tooth T1.

[0151] Specifically, the ridge 10 corresponds to the area of ​​transition zone A33 that has been enhanced, and the mating area A34 corresponds to the area of ​​transition zone A33 that has not been enhanced. That is, transition zone A33 includes a part that has a gap with the adjacent tooth space P and a part that is in close contact with the adjacent tooth space P. In this way, the moment of inertia of transition zone A33 can be increased, while avoiding excessive enhancement of the area, which would affect the fit between transition zone A33 and adjacent tooth space P.

[0152] In this specific embodiment, the thickness of any region of the ridge 10 is greater than 0.2 mm.

[0153] Specifically, the ridge 10 also includes an outer wall 13 away from the adjacent tooth space P, and the thickness between the outer wall 13 and the inner wall 12 is greater than 0.2 mm.

[0154] It should be noted that in some embodiments, at least two regions of the ridge 10 have different thicknesses, that is, the ridge 10 is a structure with varying thickness, but this is not a limitation.

[0155] In this specific embodiment, we continue to combine Figures 25 to 27 A first cross section is defined on the dental orthodontic appliance 100. The first cross section passes through the ridge 10 and is perpendicular to the mesiodistal direction Y. That is, the first cross section is as follows: Figure 27 The cross-section shown is along the AA direction.

[0156] The intersection area of ​​the ridge 10 and the first cross section includes the lowest points D1 and D2 near the buccal surface A1 or the lingual surface A2. In the direction from the buccal surface A1 of the dental orthodontic appliance 100 toward the lingual surface A2 (i.e., in a roughly horizontal direction), the distance between the lowest points D1 and D2 and the gingival end A4 located in the first cross section ranges from 0.5 mm to 8 mm.

[0157] Here, the lowest points D1 and D2 correspond to the very end of the ridge 10, including the first lowest point D1 closest to the buccal surface A1 and the second lowest point D2 closest to the lingual surface A2 on the ridge 10. The first lowest point D1 and the second lowest point D2 are roughly close to the tooth T to be treated.

[0158] Specifically, in the direction from the buccal surface A1 to the lingual surface A2 of the dental orthodontic appliance 100, there is a first distance L1 between the first lowest point D1 and the gingival tip A4, and a second distance L2 between the second lowest point D2 and the gingival tip A4. The range of both the first distance L1 and the second distance L2 is 0.5mm-4mm.

[0159] Optionally, the range of the first spacing L1 and the second spacing L2 is 1mm-3.5mm.

[0160] The first spacing L1 and the second spacing L2 are the spacings from the buccal surface A1 toward the lingual surface A2. By setting reasonable first spacing L1 and second spacing L2, the wrapping effect of the dental orthodontic appliance 100 on the teeth T to be treated can be improved.

[0161] In this specific embodiment, we continue to combine Figure 28 A second section is defined on the dental orthodontic appliance 100. This second section passes through the ridge 10 and is perpendicular to the buccal surface A1 towards the lingual surface A2. In other words, the second section is as follows: Figure 28 The cross-section shown is along the CC direction.

[0162] The intersection area of ​​the first occlusal surface A31 and the second cross section includes the first highest point G1 near the transition area A33, and the intersection area of ​​the second occlusal surface A32 and the second cross section includes the second highest point G2 near the transition area A33.

[0163] Here, taking the point where the second cross section passes through the cusp of the first tooth T1 and the second tooth T2 as an example, the first highest point G1 corresponds to the cusp R1 of the first tooth T1 near the second tooth T2, and the second highest point G2 corresponds to the cusp R2 of the second tooth T2 near the first tooth T1.

[0164] The first junction point J1 is the intersection of the first end 14 of the ridge 10 and the second section, and the second junction point J2 is the intersection of the second end 15 and the second section.

[0165] Here, the first boundary point J1 and the second boundary point J2 are the two endpoints of the ridge 10 within the second cross section.

[0166] The first highest point G1 is farther away from the gingival tip A4 than the first junction point J1, and the second highest point G2 is farther away from the gingival tip A4 than the second junction point J2.

[0167] At this time, when the dental orthodontic appliance 100 comes into contact with the opposing bite, the opposing bite will not come into contact with the ridge 10, thus avoiding the ridge 10 from affecting the normal biting process.

[0168] Specifically, on the occlusal surface A3 of the dental orthodontic appliance 100 facing the gingival end A4 (i.e., in a roughly vertical direction), there is a first distance H1 between the first highest point G1 and the gingival end A4, a second distance H2 between the first junction point J1 and the gingival end A4, a third distance H3 between the second highest point G2 and the gingival end A4, and a fourth distance H4 between the second junction point J2 and the gingival end A4. The ratio of the second distance H2 to the first distance H1 is not less than 20%, and the ratio of the fourth distance H4 to the third distance H3 is not less than 20%.

[0169] In addition, the ratio of the second distance H2 to the first distance H1 is no greater than 95%, and the ratio of the fourth distance H4 to the third distance H3 is no greater than 95%.

[0170] Optionally, the second distance H2 is 40%-80% of the first distance H1, and the fourth distance H4 is 40%-80% of the third distance H3.

[0171] In addition, continue to combine Figure 28 In the second section, in the direction from the occlusal surface A3 of the dental orthodontic appliance 100 toward the gingival end A4, any point of the dental orthodontic appliance 100 has a vertical distance from the gingival end A4. The vertical distance gradually decreases between the first highest point G1 and the first junction point J1, and gradually decreases between the second highest point G2 and the second junction point J2. The vertical distance remains unchanged or shows a gradual trend between the first junction point J1 and the second junction point J2.

[0172] In other words, the height of the orthodontic appliance body 101 gradually decreases between the first highest point G1 and the first junction point J1, and the height of the orthodontic appliance body 101 gradually decreases between the second highest point G2 and the second junction point J2. The height of the orthodontic appliance body 101 between the first junction point J1 and the second junction point J2 remains unchanged or shows a gradual trend. In this way, the ridge 10 can smoothly transition between the first occlusal surface A31 and the second occlusal surface A32.

[0173] It should be noted that the changing trend of the vertical distance between the first boundary point J1 and the second boundary point J2 is affected by the specific shape of the first tooth T1 and the second tooth T2, and can be determined according to the actual situation.

[0174] In this specific embodiment, we continue to combine Figures 25 to 28 The ridge 10 includes a first end 14 and a second end 15 disposed opposite to each other in its extension direction. The first end 14 is close to the first occlusal surface A31, and the second end 15 is close to the second occlusal surface A32.

[0175] Here, the extension direction of the ridge 10 is parallel to the mesiodistal direction Y. Of course, the extension direction of the ridge 10 may also have a small angle with the mesiodistal direction Y.

[0176] The ridge 10 is positioned close to or centered on the buccal surface A1 and lingual surface A2 of the orthodontic body 101.

[0177] Specifically, the dental orthodontic appliance 100 includes two ridges 10 spaced apart, the two ridges 10 being positioned close to the buccal surface A1 and the lingual surface A2 respectively, and the two ridges 10 being connected by a mating area A34.

[0178] One of the ridges 10 has its first end 14 and second end 15 located near the cheek surface A1, while the other ridge has its first end 14 and second end 15 located near the tongue surface A2.

[0179] Understandably, setting two ridges 10 in the same transition zone A33 can further increase the moment of inertia of the transition zone A33, thereby further preventing deformation or breakage of the dental orthodontic appliance 100.

[0180] At this time, in the direction from the cheek surface A1 of the orthodontic body 101 to the tongue surface A2, the outline formed by the two ridges 10 of the transition area A33 and the mating area A34 is "M" shaped.

[0181] Specifically, in the direction from the cheek surface A1 to the tongue surface A2 of the orthodontic body 101, the cross-section of a single ridge 10 is rectangular, trapezoidal, arc-shaped, triangular, polygonal, or "M"-shaped.

[0182] Combination Figure 31 The transition region A33 includes two ridges 10, and the cross-section of a single ridge 10 is triangular.

[0183] Combination Figure 32 The transition zone A33 includes two ridges 10, and the cross-section of each ridge 10 is rectangular.

[0184] Combination Figure 33 The transition zone A33 includes two ridges 10, and the cross-section of each ridge 10 is arc-shaped.

[0185] Combination Figures 34 to 36 The transition zone A33 includes a ridge 10, and the cross-section of the single ridge 10 is “M” shaped.

[0186] Here, a single ridge 10 includes a recess 16 and two protrusions 17 located on both sides of the recess 16, with the recess 16 being closer to the adjacent tooth space P than the protrusions 17.

[0187] Specifically, in combination Figure 34 The recessed part 16 is quite concave, and the inner and outer walls of the ridge 10 are roughly "M" shaped.

[0188] Combination Figure 35 Compared to Figure 34 Ridge 10, Figure 35 The recessed portion 16 has a relatively small degree of concavity, and the outer walls of the ridges 10 are roughly "M" shaped, while the inner walls are roughly a single "door" shaped.

[0189] Combination Figure 36 Compared to Figure 34 Ridge 10, Figure 36 The ridge 10 further includes a notch 18 located near the buccal surface A1 and the tongue surface A2.

[0190] It is understandable that in other specific designs, the number and position of the recesses 16 and protrusions 17 may also be in other configurations.

[0191] It should be noted that in other embodiments, for a ridge 10, the first end 14 may be set near the cheek surface A1 of the orthodontic body 101, and the second end 15 may be set near the tongue surface A2 of the orthodontic body 101. That is, the ridge 10 is inclined at the transition area A33, and the angle formed between the extension direction of the ridge 10 and the mesiodistal direction Y is an acute angle.

[0192] Combination Figure 37 It can form ridges 10 at multiple adjacent tooth gaps P on the occlusal surface A3, thereby further increasing the moment of inertia of the entire dental orthodontic appliance 100.

[0193] In addition, combined Figure 38 and Figure 39 The first tooth T1 and the second tooth T2 are separated by an extraction area T3. The orthodontic appliance body 101 includes a vacuolar area A5 corresponding to the extraction area T3, and a transition area A33 covers the vacuolar area A5.

[0194] In other words, when the adjacent tooth gap P between the first tooth T1 and the second tooth T2 includes the extraction area T3, the transition area A33 extends from the first occlusal surface A31 through the cavitation area A5 to the second occlusal surface A32, and the extended area of ​​the ridge 10 covers the cavitation area A5.

[0195] Here, the moment of inertia of the cavitation region A5 can be increased by setting a ridge 10 in the cavitation region A5.

[0196] In summary, by providing a ridge 10 protruding in a direction away from the cavity S on the orthodontic appliance body 101, the present invention can increase the moment of inertia of the entire dental orthodontic appliance 100. This moment of inertia can improve the ability of the dental orthodontic appliance 100 to resist bending in a direction away from the cavity S. The direction away from the cavity S corresponds to the main force direction when removing the dental orthodontic appliance. That is, the provision of the ridge 10 can improve the local stiffness of the orthodontic appliance 100, thereby avoiding deformation or breakage of the dental orthodontic appliance 100.

[0197] In addition, the dental orthodontic appliance 100 of this embodiment directly includes the ridge 10, and the patient can achieve the above-mentioned effect by directly wearing the dental orthodontic appliance 100, which is convenient to use and provides a better user experience.

[0198] 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.

[0199] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A dental orthodontic appliance with ridges, characterized in that, The orthodontic appliance includes an appliance body forming a cavity for accommodating teeth, and a ridge connecting the appliance body, the ridge protruding from the appliance body in a direction away from the cavity, the ridge being located on the occlusal surface of the appliance body, and the ridge including a receiving cavity communicating with the cavity.

2. The dental orthodontic appliance according to claim 1, characterized in that, The ridges are strip-shaped.

3. The dental orthodontic appliance according to claim 1, characterized in that, The ridge is integrally formed with the body of the orthodontic appliance.

4. The dental orthodontic appliance according to claim 1, characterized in that, The ridge also includes a filling portion fixed within the receiving cavity.

5. The dental orthodontic appliance according to claim 1, characterized in that, The ridge extends in a direction perpendicular to the mesiodistal direction.

6. The dental orthodontic appliance according to claim 1, characterized in that, The angle formed between the extension direction of the ridge and the mesiodistal direction is an acute angle.

7. The dental orthodontic appliance according to claim 1, characterized in that, The ridges are provided for the anterior and / or posterior regions of the teeth to be treated.

8. The dental orthodontic appliance according to claim 1, characterized in that, The ridges are provided for at least one of the tooth surface, interdental spaces, or cavitation areas of the tooth to be treated.

9. The dental orthodontic appliance according to claim 1, characterized in that, In a direction away from the cavity, the ridge has a first height, the maximum value of which ranges from 0.1 mm to 10 mm.

10. The dental orthodontic appliance according to claim 1, characterized in that, In the extending direction of the ridge, the ridge has a first length, the first length being greater than 0.5 mm.

11. The dental orthodontic appliance according to claim 1, characterized in that, The ridge has a first width in a direction that is perpendicular to both the direction away from the cavity and the extension direction of the ridge, the maximum value of the first width being 0.2 mm to 8 mm.

12. The dental orthodontic appliance according to claim 1, characterized in that, In the direction away from the cavity, the outer contour of the cross-section of the ridge is rectangular, trapezoidal, arc-shaped, triangular, polygonal, or "M"-shaped.

13. The dental orthodontic appliance according to claim 1, characterized in that, The dental orthodontic appliance includes a plurality of ridges located on the body of the appliance.

14. The dental orthodontic appliance according to claim 13, characterized in that, The plurality of ridges are distributed at intervals.

15. The dental orthodontic appliance according to claim 13, characterized in that, The multiple ridges are interconnected to form a combined ridge.

16. The dental orthodontic appliance according to claim 15, characterized in that, The combined ridge includes a free end.

17. The dental orthodontic appliance according to claim 15, characterized in that, The combined ridges enclose a closed area.

18. The dental orthodontic appliance according to claim 1, characterized in that, The occlusal surface of the orthodontic appliance body includes a transition zone corresponding to the interdental space of the tooth to be treated, and the transition zone includes the ridge.

19. The dental orthodontic appliance according to claim 18, characterized in that, The transition zone also includes a mating area connecting the ridge, wherein the first gap between the ridge and the adjacent tooth space is greater than the second gap between the mating area and the adjacent tooth space.

20. The dental orthodontic appliance according to claim 19, characterized in that, The dental orthodontic appliance includes two spaced-apart ridges connected by the mating area.

21. The dental orthodontic appliance according to claim 18, characterized in that, The ridge includes a recessed portion and two protrusions located on both sides of the recessed portion, the recessed portion being closer to the adjacent tooth space than the protrusions.

22. The dental orthodontic appliance according to claim 18, characterized in that, The thickness of the ridge is greater than 0.2 mm.

23. The dental orthodontic appliance according to claim 18, characterized in that, The ridge includes an inner wall near the interdental space, and a cavity is formed between the inner wall and the interdental space. The maximum value of the second width of the cavity is 0.5 mm to 5 mm in the direction from the buccal surface of the orthodontic body to the lingual surface.

24. The dental orthodontic appliance according to claim 18, characterized in that, The interdental space is located between the first tooth and the second tooth. The occlusal surface includes a first occlusal surface and a second occlusal surface that respectively match the first tooth and the second tooth. The ridge includes a first end and a second end that are disposed opposite to each other in its extension direction. The first end is close to the first occlusal surface, and the second end is close to the second occlusal surface.

25. The dental orthodontic appliance according to claim 24, characterized in that, The first tooth and the second tooth include an extraction area, the orthodontic appliance body includes a vacuolar area corresponding to the extraction area, and the transition area covers the vacuolar area.

26. The dental orthodontic appliance according to claim 24, characterized in that, The first end is positioned close to the cheek surface of the orthodontic appliance body, and the second end is positioned close to the tongue surface of the orthodontic appliance body.

27. The dental orthodontic appliance according to claim 24, characterized in that, The ridge extends in a direction parallel to the mesiodistal direction.

28. The dental orthodontic appliance according to claim 24, characterized in that, A first cross section is defined on the dental orthodontic appliance. The first cross section passes through the ridge and is perpendicular to the mesiodistal direction. The intersection area of ​​the ridge and the first cross section includes the lowest point near the buccal or lingual surface. In the direction from the buccal surface of the dental orthodontic appliance to the lingual surface, the distance between the lowest point and the gingival end located within the first cross section ranges from 0.5 mm to 8 mm.

29. The dental orthodontic appliance according to claim 28, characterized in that, The lowest point includes a first lowest point near the buccal surface and a second lowest point near the lingual surface. In the direction from the buccal surface to the lingual surface of the dental orthodontic appliance, the first lowest point has a first distance between itself and the gingival end located within the first cross section and on the buccal surface, and the second lowest point has a second distance between itself and the gingival end located within the first cross section and on the lingual surface. The range of the first distance and the second distance is 0.5 mm to 4 mm.

30. The dental orthodontic appliance according to claim 29, characterized in that, The range of both the first spacing and the second spacing is 1mm-3.5mm.

31. The dental orthodontic appliance according to claim 24, characterized in that, A second cross section is defined on the dental orthodontic appliance, the second cross section passing through the ridge and perpendicular to the buccal surface toward the lingual surface, the intersection area of ​​the first occlusal surface and the second cross section includes a first highest point near the transition area, the intersection area of ​​the second occlusal surface and the second cross section includes a second highest point near the transition area, the junction point of the first end of the ridge and the second cross section is a first junction point, the junction point of the second end and the second cross section is a second junction point, the first highest point is farther from the gingival end than the first junction point, and the second highest point is farther from the gingival end than the second junction point.

32. The dental orthodontic appliance according to claim 31, characterized in that, In the direction of the occlusal surface of the dental orthodontic appliance toward the gingival end, there is a first distance between the first highest point and the gingival end, a second distance between the first junction point and the gingival end, a third distance between the second highest point and the gingival end, and a fourth distance between the second junction point and the gingival end. The ratio of the second distance to the first distance is not less than 20%, and the ratio of the fourth distance to the third distance is not less than 20%.

33. The dental orthodontic appliance according to claim 32, characterized in that, The ratio of the second distance to the first distance is not greater than 95%, and the ratio of the fourth distance to the third distance is not greater than 95%.

34. The dental orthodontic appliance according to claim 32, characterized in that, The second distance is 40%-80% of the first distance, and the fourth distance is 40%-80% of the third distance.

35. The dental orthodontic appliance according to claim 31, characterized in that, In the direction of the occlusal surface of the orthodontic appliance toward the gingival end, any point of the orthodontic appliance has a vertical distance from the gingival end, the vertical distance gradually decreases between the first highest point and the first junction point, and the vertical distance gradually decreases between the second highest point and the second junction point.

36. The dental orthodontic appliance according to claim 35, characterized in that, The vertical distance remains constant or gradually changes between the first and second boundary points.

37. A dental orthodontic appliance with ridges, characterized in that, The orthodontic appliance body includes a cavity that forms to accommodate teeth. The occlusal surface of the orthodontic appliance body includes a transition zone corresponding to the interdental space of the tooth to be treated. The transition zone includes a ridge. The ridge forms a cavity between the inner wall of the interdental space and the interdental space. The ridge is integrally formed with the orthodontic appliance body.

38. The dental orthodontic appliance according to claim 37, characterized in that, The transition zone also includes a mating area connecting the ridge, wherein the first gap between the ridge and the adjacent tooth space is greater than the second gap between the mating area and the adjacent tooth space.

39. The dental orthodontic appliance according to claim 38, characterized in that, The dental orthodontic appliance includes two spaced-apart ridges connected by the mating area.

40. The dental orthodontic appliance according to claim 37, characterized in that, The ridge also includes an outer wall away from the adjacent tooth space, and the thickness between the outer wall and the inner wall is greater than 0.2 mm.

41. The dental orthodontic appliance according to claim 37, characterized in that, In the direction from the cheek surface of the orthodontic body to the tongue surface, the cross-section of the ridge is rectangular, trapezoidal, arc-shaped, triangular, polygonal, or "M"-shaped.

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