Attachment, shell-shaped tooth orthodontic device and shell-shaped tooth orthodontic device system

Abstract

An attachment (103), which is configured to be bonded to the surface of a tooth (101), such that a shell-shaped tooth orthodontic device (105) worn on the tooth (101) can interact with the attachment (103) so as to apply a force and the moment of the force to the tooth (101). A bonding surface (1031), by means of which the attachment (103) is bonded to the surface of the tooth (101), is formed on a first end of the attachment (103); the attachment (103) is formed by means of extending from the bonding surface (1031); an acute angle is formed between a connecting line between the first end and a second end of the attachment (103) and the bonding surface (1031); and the second end is a tail end away from the first end.

Description

Accessories, shell-shaped dental appliances, and shell-shaped dental appliance systems Technical Field

[0001] The present application generally relates to attachments, shell dental appliances, and shell dental appliance systems. Background Art

[0002] Shell-shaped dental appliances based on polymer materials are becoming increasingly popular due to their aesthetics, convenience, and ease of cleaning.

[0003] The shell-shaped dental appliance is a one-piece shell that forms a cavity to accommodate multiple teeth, and the geometry of the cavity substantially matches the teeth in a corresponding arrangement.

[0004] Orthodontic treatment using shell appliances generally requires dozens of successive shell appliances, which are worn successively to gradually reposition the patient's teeth from an initial tooth configuration to a target tooth configuration.

[0005] Shell-shaped dental appliances utilize the resilient force generated by deformation to reposition a patient's teeth from their current configuration to a predetermined one. However, shell-shaped appliances alone have limited effectiveness in certain movements, such as axis alignment, rotation, torque, and root control. Therefore, when orthodontic treatment involves these tooth movements, attachments are typically bonded to the tooth surface, leveraging compression and friction between the shell-shaped appliance and the attachment to enhance these movements. However, existing attachments are limited in their effectiveness in enhancing these movements.

[0006] In addition, in some cases, a single shell-shaped dental appliance has limited effect in orthodontic treatment. In this case, accessories are usually bonded to the surface of the teeth, and the extrusion and friction between the shell-shaped dental appliance and the accessories are used to improve the effect of orthodontic treatment.

[0007] For teeth with insufficient height, such as impacted teeth, residual crowns or teeth with insufficient height, the effect of orthodontic treatment using a combination of traditional attachments and shell-shaped dental appliances is also very limited.

[0008] In view of the above, it is necessary to provide a new accessory. Summary of the Invention

[0009] One aspect of the present application provides an attachment for bonding to a tooth surface so that a shell-shaped dental appliance worn on the tooth can apply force and torque to the tooth through interaction with the attachment, wherein the attachment forms a bonding surface at a first end for bonding the attachment to the tooth surface, and the attachment is extended from the bonding surface, wherein a line connecting the first end and the second end of the attachment forms an acute angle with the bonding surface, and the second end is the end away from the first end.

[0010] In some embodiments, an angle α between the extension direction of the accessory at the first end and the bonding surface is an acute angle, and an angle θ between the extension direction of the accessory at the second end and the bonding surface is smaller than α.

[0011] In some embodiments, the attachment extends from the bonding surface to form a first section, and extends from an end of the first section away from the bonding surface to form a second section, which is bent toward the bonding surface.

[0012] In some embodiments, at least a section of the appendage extends along an arc.

[0013] In some embodiments, α is less than or equal to 60°.

[0014] In some embodiments, the appendage extends to a greater length and width than its thickness.

[0015] In some embodiments, the second section of the attachment is bent around an axis in the width direction of the attachment.

[0016] In some embodiments, the attachment is used to be bonded to the buccal or lingual side of the tooth and extended toward the maxillofacial direction of the tooth, and the shell-shaped dental appliance provides a positive axis torque to the tooth through interaction with the attachment.

[0017] In some embodiments, the distance between the end of the second section of the attachment and the bonding surface is greater than or equal to 0.5 mm.

[0018] In some embodiments, the second end of the attachment forms a bulge on a side close to the bonding surface and forms a recess on a side away from the bonding surface.

[0019] Another aspect of the present application provides a shell-shaped dental appliance for repositioning a patient's teeth from a first tooth layout to a second tooth layout, wherein the shell-shaped dental appliance is an integral shell, forming a first cavity for accommodating multiple teeth and a second cavity for accommodating accessories, wherein the accessories are bonded to the surface of the first tooth, and the shell-shaped dental appliance can apply force and torque to the first tooth through interaction with the accessories, wherein the accessories form a bonding surface at the first end for bonding the accessories to the surface of the first tooth, and the accessories are extended from the bonding surface, wherein a line connecting the first end and the second end of the accessory forms an acute angle with the bonding surface, and the second end is the end away from the first end.

[0020] In some embodiments, an angle α between the extension direction of the accessory at the first end and the bonding surface is an acute angle, and an angle θ between the extension direction of the accessory at the second end and the bonding surface is smaller than α.

[0021] In some embodiments, the attachment extends from the bonding surface to form a first section, and extends from an end of the first section away from the bonding surface to form a second section, which is bent toward the bonding surface.

[0022] In some embodiments, at least a section of the appendage extends along an arc.

[0023] In some embodiments, it is characterized in that α is less than or equal to 60°.

[0024] In some embodiments, the appendage extends to a greater length and width than its thickness.

[0025] In some embodiments, the second section of the attachment is bent around an axis in the width direction of the attachment.

[0026] In some embodiments, the attachment is bonded to the buccal or lingual side of the first tooth and extends toward the maxillofacial direction of the first tooth, and the shell-shaped dental appliance provides a positive axis torque to the first tooth through interaction with the attachment.

[0027] In some embodiments, the distance between the end of the second section of the attachment and the bonding surface is greater than or equal to 0.5 mm.

[0028] In some embodiments, the second end of the attachment forms a bulge on a side close to the bonding surface and forms a recess on a side away from the bonding surface.

[0029] Another aspect of the present application provides a shell-shaped dental appliance system, which includes an attachment bonded to the surface of a patient's first tooth and a shell-shaped dental appliance, wherein the shell-shaped dental appliance is used to reposition the patient's teeth from a first tooth layout to a second tooth layout. The shell-shaped dental appliance is an integral shell, forming a first cavity for accommodating multiple teeth of the patient and a second cavity for accommodating the attachment. The shell-shaped dental appliance can apply force and torque to the first tooth through interaction with the attachment. The attachment forms a bonding surface at a first end for bonding the attachment to the surface of the first tooth, and the attachment is extended from the bonding surface, wherein a line connecting the first end and the second end of the attachment forms an acute angle with the bonding surface, and the second end is the end away from the first end.

[0030] In some embodiments, an angle α between the extension direction of the accessory at the first end and the bonding surface is an acute angle, and an angle θ between the extension direction of the accessory at the second end and the bonding surface is smaller than α.

[0031] In some embodiments, the attachment extends from the bonding surface to form a first section, and extends from an end of the first section away from the bonding surface to form a second section, which is bent toward the bonding surface.

[0032] In some embodiments, at least a section of the appendage extends along an arc.

[0033] In some embodiments, α is less than or equal to 60°.

[0034] In some embodiments, the appendage extends to a greater length and width than its thickness.

[0035] In some embodiments, the second section of the attachment is bent around an axis in the width direction of the attachment.

[0036] In some embodiments, the attachment is bonded to the buccal or lingual side of the first tooth and extends toward the maxillofacial direction of the first tooth, and the shell-shaped dental appliance provides a positive axis torque to the first tooth through interaction with the attachment.

[0037] In some embodiments, the distance between the end of the second section of the attachment and the bonding surface is greater than or equal to 0.5 mm.

[0038] In some embodiments, the second end of the attachment forms a bulge on a side close to the bonding surface and forms a recess on a side away from the bonding surface.

[0039] Another aspect of the present application provides an attachment, which is used to be bonded to the jaw surface of a tooth with insufficient height, so that a shell-shaped dental appliance worn on the tooth can apply a positive axis torque to the tooth through interaction with the attachment, and the attachment forms a bonding surface at the first end for bonding the attachment to the jaw surface of the tooth, and the attachment is extended from the bonding surface toward the opposite jaw.

[0040] In some embodiments, the attachment extends from the bonding surface to form a first section, and extends from an end of the first section away from the bonding surface to form a second section, wherein a transverse dimension of the second section is smaller than that of the first section.

[0041] In some embodiments, the extending direction of the first segment is a first direction, the extending direction of the second segment is a second direction, and the first direction and the second direction form an acute angle.

[0042] In some embodiments, the second direction is inclined in a direction opposite to the normal axis of the tooth.

[0043] In some embodiments, the angle between the connecting line of the two ends of the attachment and the vertical direction is an acute angle less than 45°, and the connecting line is inclined in a direction opposite to the normal axis direction of the tooth.

[0044] In some embodiments, the height of the attachment is such that in the occlusal state, there is a gap between the portion of the shell-shaped dental appliance corresponding to the top of the attachment and the opposing jaw, and the gap is greater than or equal to 0.5 mm.

[0045] Another aspect of the present application provides a shell-shaped dental appliance for repositioning a patient's teeth from a first tooth layout to a second tooth layout. The shell-shaped dental appliance is an integrated shell, forming a first cavity for accommodating multiple teeth and a second cavity for accommodating a first accessory. The first accessory is bonded to the jaw surface of a first tooth that is insufficient in height. The shell-shaped dental appliance can apply a positive axis torque to the first tooth through interaction with the first accessory. The first accessory forms a bonding surface at the first end for bonding the first accessory to the jaw surface of the first tooth. The first accessory is extended from the bonding surface toward the opposite jaw.

[0046] In some embodiments, the first attachment extends from the bonding surface to form a first section, and extends from an end of the first section away from the bonding surface to form a second section, wherein a lateral dimension of the second section is smaller than that of the first section.

[0047] In some embodiments, the extending direction of the first segment is a first direction, the extending direction of the second segment is a second direction, and the first direction and the second direction form an acute angle.

[0048] In some embodiments, the second direction is inclined in a direction opposite to the normal axis direction of the first tooth.

[0049] In some embodiments, the angle between the connecting line of the two ends of the first attachment and the vertical direction is an acute angle less than 45°, and the connecting line is inclined in a direction opposite to the positive axis direction of the first tooth.

[0050] In some embodiments, in the occluded state, there is a gap between the portion of the shell-shaped dental appliance corresponding to the top of the first attachment and the opposing jaw, and the gap is greater than or equal to 0.5 mm.

[0051] In some embodiments, the shell-shaped dental appliance further forms a third cavity and a fourth cavity for accommodating a second accessory and a third accessory, respectively. The second accessory is bonded to the buccal side of the first tooth, and the third accessory is bonded to the lingual side of the first tooth.

[0052] In some embodiments, the bonding surface of the first attachment is located at a middle position of the maxillary surface of the first tooth.

[0053] Another aspect of the present application provides a shell-shaped dental appliance system, which includes a first accessory bonded to the first tooth and maxillary surface of a patient and a shell-shaped dental appliance. The shell-shaped dental appliance is used to reposition the patient's teeth from a first tooth layout to a second tooth layout. It is an integrated shell, forming a first cavity for accommodating multiple teeth of the patient and a second cavity for accommodating the first accessory. The shell-shaped dental appliance can apply a positive axis torque to the first tooth through interaction with the first accessory. The first accessory forms a bonding surface at the first end for bonding the first accessory to the first tooth and the first accessory is extended from the bonding surface toward the opposite jaw.

[0054] In some embodiments, the first attachment extends from the bonding surface to form a first section, and extends from an end of the first section away from the bonding surface to form a second section, wherein a lateral dimension of the second section is smaller than that of the first section.

[0055] In some embodiments, the extending direction of the first segment is a first direction, the extending direction of the second segment is a second direction, and the first direction and the second direction form an acute angle.

[0056] In some embodiments, the second direction is inclined in a direction opposite to the normal axis direction of the first tooth.

[0057] In some embodiments, the angle between the connecting line of the two ends of the first attachment and the vertical direction is an acute angle less than 45°, and the connecting line is inclined in a direction opposite to the positive axis direction of the first tooth.

[0058] In some embodiments, in the occluded state, there is a gap between the portion of the shell-shaped dental appliance corresponding to the top of the first attachment and the opposing jaw, and the gap is greater than or equal to 0.5 mm.

[0059] In some embodiments, it also includes a second accessory and a third accessory, and the shell-shaped dental appliance further forms a third cavity and a fourth cavity for accommodating the second accessory and the third accessory respectively, the second accessory is bonded to the buccal side of the first tooth, and the third accessory is bonded to the lingual side of the first tooth.

[0060] In some embodiments, the bonding surface of the first attachment is located at a middle position of the maxillary surface of the first tooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The above and other features of the present application will be further described below in conjunction with the accompanying drawings and detailed description thereof. It should be understood that these drawings only illustrate several exemplary embodiments of the present application and should not be considered to limit the scope of protection of the present application. Unless otherwise specified, the drawings are not necessarily to scale, and similar reference numerals represent similar components.

[0062] 1A-1C schematically illustrate an attachment bonded to the buccal side of a tooth in one embodiment of the present application;

[0063] FIG2 schematically illustrates the mating relationship between the shell-shaped dental appliance and the accessories shown in FIG1A-1C in one embodiment;

[0064] FIG3A schematically illustrates the force applied to the teeth by a shell-shaped dental appliance through the attachment shown in FIG1A-1C in one embodiment;

[0065] FIG3B schematically illustrates the force applied to the teeth by the shell-shaped dental appliance through the attachment shown in FIG1A-1C in another embodiment;

[0066] FIG4 schematically illustrates an attachment bonded to the tooth and maxillary surface and a shell-shaped dental appliance fitted therewith in one embodiment of the present application;

[0067] FIG5 is a partial enlarged view of the attachment and the shell-shaped dental appliance shown in FIG4; and

[0068] FIG6 schematically shows an attachment bonded to the maxillary surface of a tooth and a shell-shaped dental appliance matched therewith in yet another embodiment. DETAILED DESCRIPTION

[0069] The following detailed description refers to the accompanying drawings that form a part of this specification. The illustrative embodiments mentioned in the specification and drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. In light of this application, those skilled in the art will understand that many other embodiments can be adopted and various changes can be made to the described embodiments without departing from the subject matter and scope of protection of this application. It should be understood that the various aspects of the present application described and illustrated herein can be arranged, replaced, combined, separated and designed according to many different configurations, all of which are within the scope of protection of this application.

[0070] Please refer to Figures 1A-1C, which schematically illustrate an attachment 103 bonded to the buccal side of a tooth 101 in one embodiment of the present application, wherein Figure 1A is a buccal-lingual view, Figure 1B is a mesio-distal view, and Figure 1C is a vertical view.

[0071] One end of the attachment 103 forms an adhesive surface 1031 for bonding the attachment 103 to a tooth surface. A first segment 1033 extends from the adhesive surface 1031, forming an acute angle α between the extension direction of the first segment 1033 and the adhesive surface 1031. A second segment 1035 extends from the end of the first segment 1033 away from the adhesive surface 1031 and bends toward the adhesive surface 1031, such that the angle θ between the extension direction of the second segment 1035 and the adhesive surface 1031 is less than α.

[0072] In the embodiment shown in Figures 1A-1C, the attachment 103 bonded to the tooth 101 extends toward the maxillofacial direction, and the second section 1035 is bent toward the bonding surface 1031. This arrangement can, on the one hand, reduce the height of the attachment 103 protruding from the surface of the tooth 101, and on the other hand, facilitates the demolding of the shell-shaped dental appliance in the hot pressing film molding process, and also facilitates the removal of the shell-shaped dental appliance worn on the patient's dentition.

[0073] In one embodiment, α is less than or equal to 60°.

[0074] In one embodiment, the distance d between the end of the second segment 1035 and the surface of the tooth 101 is greater than or equal to 0.5 mm.

[0075] In one embodiment, the bonding surface 1031 may be a flat surface. In another embodiment, the bonding surface 1031 may be a curved surface. In this case, a plane may be fitted based on the bonding surface 1031, and the angle between the plane and the extension direction of the first segment 1033 may be used as the angle between the bonding surface 1031 and the extension direction of the first segment 1033.

[0076] The total extended length L of the attachment 103 (i.e., the sum of the extended lengths of the first section 1033 and the second section 1035) is greater than the thickness T. This increases the length of the lever, thereby enabling the shell-shaped dental appliance to apply a greater torque to the tooth 101 through the attachment 103. The width W of the attachment 103 is greater than the thickness T, which increases the area of ​​the bonding surface 1031 and thereby improves the bonding strength of the attachment 103. The second section 1035 of the attachment 103 is bent about an axis in the width direction.

[0077] Please refer to FIG. 2 , which schematically illustrates the mating relationship between a shell-shaped dental appliance 105 and the teeth 101 and the attachment 103 shown in FIG. 1A-1C in one embodiment.

[0078] The shell-shaped dental appliance 105 is an integral shell, forming a cavity 1051 for accommodating teeth and a cavity 1053 for accommodating attachments 103. The shell-shaped dental appliance 105 worn on the patient's dentition applies force and torque to the teeth 101 through the attachments 103 by squeezing and / or friction with the attachments 103.

[0079] In one embodiment, the shell-shaped dental appliance 105 may be in contact with the attachment 103 only in the force-applying area, and a gap 1055 may be left between the other parts and the attachment 103 .

[0080] In one embodiment, the geometry of the portion of the cavity 1053 of the shell-shaped dental appliance 105 that receives the end of the attachment 103 may match the geometry of the end of the attachment 103 .

[0081] 3A , which schematically illustrates a shell-shaped dental appliance (not shown) applying force to a tooth 101 via an attachment 103 in one embodiment. In this example, the shell-shaped dental appliance applies a buccolingual force F1 near the distal end of the attachment 103, which generates a lingually inclined moment t1 on the tooth 101.

[0082] 3B , which schematically illustrates another embodiment of a shell-shaped dental appliance (not shown) applying force to a tooth 101 via an attachment 103. In this example, the shell-shaped dental appliance applies a mesiodistal force F2 near the distal end of the attachment 103, which generates a distal-directed moment t2 on the tooth 101.

[0083] Although, in the above embodiments, the attachment is bonded to the buccal side of the tooth, it can be understood from the enlightenment of the present application that the attachment can also be bonded to the lingual side of the tooth.

[0084] In another embodiment, the attachment of the present application may also be in one-part format.

[0085] In another embodiment, the attachment of the present application may not have obvious segments. For example, at least one segment thereof extends along an arc to form a gentle arc.

[0086] Regardless of the form of the attachment of the present application, the line connecting its two ends forms an acute angle with the bonding surface.

[0087] In one embodiment, the end of the attachment can be formed into a convex shape on the side close to the bonding surface and a concave shape on the side away from the bonding surface. This structure can not only strengthen the fit between the shell-shaped dental appliance and the attachment, but also reduce the height of the attachment protruding from the tooth surface.

[0088] Another aspect of the present application provides an attachment, a shell-shaped dental appliance, and a shell-shaped dental appliance system that can improve the ortho-axial effect on teeth with insufficient eruption height.

[0089] Teeth with insufficient height primarily include newly erupted teeth, impacted teeth, residual crowns, and teeth that are inherently insufficient in height. Impacted teeth are teeth that are improperly positioned within the jawbone and cannot erupt into a normal occlusal position. The most common impacted teeth are mandibular third molars, followed by maxillary third molars and maxillary canines.

[0090] Please refer to FIG4 , which schematically illustrates an accessory capable of improving the orthodontic effect of teeth with insufficient eruption height and a shell-shaped dental appliance that cooperates therewith in one embodiment of the present application.

[0091] The patient's maxillary dentition 201 is fitted with a shell-shaped dental appliance 203, and the mandibular dentition 205 is fitted with a shell-shaped dental appliance 207. The mandibular teeth 2051 have insufficient eruption height, resulting in a large gap between them and the maxillary teeth when occluded. To enhance the aligning effect of the shell-shaped dental appliance 207 on the mandibular teeth 2051, an attachment 209 is bonded to the mandibular surface of the mandibular teeth 2051. The compression between the shell-shaped dental appliance 207 and the attachment 209 strengthens the aligning force and torque.

[0092] Please refer to FIG5 again, which is a partial enlarged view of the teeth with insufficient eruption height, accessories and shell-shaped dental appliance shown in FIG4.

[0093] The shell-shaped dental appliance 207 is an integral shell, forming a first cavity 2071 for accommodating the mandibular dentition and a second cavity 2073 for accommodating the accessories 209 .

[0094] The attachment 209 includes an adhesive surface 2091 for bonding the attachment 209 to the jaw surface of the tooth 2051. A first section 2093 extends from the adhesive surface 2091, and a second section 2095 extends from one end of the first section 2093 away from the adhesive surface 2091. The first section 2093 and the second section 2095 extend in the same vertical direction. The transverse dimension (perpendicular to the extension direction) of the first section 2093 is larger than that of the second section 2095. This configuration increases the bonding area of ​​the attachment 209 to ensure a secure bond. It also increases the area of ​​the attachment 209 wrapped around the shell-shaped dental appliance 207, making the force applied by the shell-shaped dental appliance 207 to the attachment 209 more stable.

[0095] The cross-sections of the first section 2093 and the second section 2095 can be any suitable shape, for example, rectangular, circular, elliptical, triangular, etc. The cross-sections of the first section 2093 and the second section 2095 can be the same shape or different shapes.

[0096] In light of the present application, it can be understood that, in addition to the vertical direction, the extension direction of the first section 2093 and the second section 2095 can also form an acute angle with the vertical direction.

[0097] In one embodiment, the extension direction of the first segment 2093 and the second segment 2095 can be determined according to the positive axis direction of the tooth 2051. For example, the positive axis direction of the tooth 2051 is the first direction, and the extension direction of the first segment 2093 and the second segment 2095 can be inclined at a certain angle toward a second direction opposite to the first direction.

[0098] In one embodiment, in the occluded state, the height of the attachment 209 is such that there is a gap between the shell-shaped dental appliance 207 and the first part corresponding to the attachment 209 and the opposing jaw, so as to avoid the opposing jaw squeezing the first part and affecting the force applied by the shell-shaped dental appliance 207 to the attachment 209.

[0099] In one embodiment, the shell-shaped dental appliance 207 applies a distal force F3 to the attachment 209 , which generates a distal-biased moment t3 on the tooth 2051 .

[0100] Please refer to FIG6 , which schematically illustrates an accessory and a shell-shaped dental appliance that cooperates therewith in yet another embodiment of the present application.

[0101] The shell-shaped dental appliance 307 is an integral shell, forming a first cavity 3071 for accommodating the mandibular dentition and a second cavity 3073 for accommodating the accessories 309 .

[0102] The attachment 309 includes an adhesive surface 3091 for bonding the attachment 309 to the jaw surface of the tooth 1051. A first section 3093 extends from the adhesive surface 3091, and a second section 3095 extends from an end of the first section 3093 distal from the adhesive surface 3091. The first section 3093 and the second section 3095 extend at an acute angle β. This configuration not only improves the reliability of the shell-shaped dental appliance 307 when worn and the application of force, but also allows the direction of force to be freely controlled according to the orthogonal requirements of the tooth 2051. The first section 3093 has a larger transverse dimension (perpendicular to the extension direction) than the second section 3095.

[0103] In one embodiment, the shell-shaped dental appliance 307 applies a distal upward force F4 to the attachment 309 , which generates a distal-biased moment t4 on the tooth 2051 .

[0104] In another embodiment, the attachment bonded to the tooth and maxillary surface of the present application may also be one-piece.

[0105] In another embodiment, at least one section of the attachment bonded to the tooth and maxillary surface of the present application may extend along an arc.

[0106] In one embodiment, the line connecting the two ends of the attachment bonded to the maxillary surface of the tooth forms an acute angle of less than 45° with the vertical direction, and the line is inclined in a direction opposite to the tooth's normal axis.

[0107] In one embodiment, in the occlusal state, there is a gap between the top of the cavity of the shell-shaped dental appliance that accommodates the attachment bonded to the maxillary surface and the opposing jaw, and the gap is greater than or equal to 0.5 mm.

[0108] In one embodiment, three attachments can be bonded to a single tooth: the first attachment is bonded to the maxillary surface of the tooth, and the second and third attachments are bonded to the buccal and lingual surfaces of the tooth, respectively. Accordingly, the shell-shaped dental appliance forms cavities to accommodate the three attachments. This configuration can enhance the control of the shell-shaped dental appliance over the tooth.

[0109] Although various aspects and embodiments of the present application are disclosed herein, other aspects and embodiments of the present application will be readily apparent to those skilled in the art in light of this disclosure. The various aspects and embodiments disclosed herein are for illustrative purposes only and are not intended to be limiting. The scope and subject matter of this application are determined solely by the appended claims.

[0110] Similarly, various diagrams may illustrate exemplary architectures or other configurations of the disclosed methods and systems that aid in understanding the features and functionality that may be included in the disclosed methods and systems. The claimed content is not limited to the exemplary architectures or configurations shown, and the desired features may be implemented using a variety of alternative architectures and configurations. Furthermore, for flow charts, functional descriptions, and method claims, the order of blocks presented herein should not limit various embodiments to being implemented in the same order to perform the described functionality, unless the context clearly dictates otherwise.

[0111] Unless otherwise expressly stated, the terms and phrases used herein and their variations should be interpreted as open ended rather than restrictive. In some instances, the appearance of broad words and phrases such as "one or more," "at least," "but not limited to," or other similar terms should not be understood as intending or requiring a narrowing of the context in which such broad terms may not be used.

Claims

1. An attachment for adhering to the surface of a tooth, such that a shell-shaped tooth orthodontic appliance worn on the tooth can apply forces and moments to the tooth through interaction with the attachment. The attachment forms an adhesive surface at a first end for adhering the attachment to the tooth surface, and the attachment extends from the adhesive surface. Wherein, The line connecting the first end and the second end of the attachment forms an acute angle with the bonding surface, and the second end is the end far from the first end.

2. The accessory according to claim 1, characterized in that, The included angle α between the extending direction of the attachment at the first end and the bonding surface is an acute angle, and the included angle θ between the extending direction of the attachment at the second end and the bonding surface is less than α.

3. The accessory according to claim 2, characterized in that, The attachment extends from the bonding surface to form a first section, and extends from one end of the first section far from the bonding surface to form a second section, which bends towards the direction close to the bonding surface.

4. The accessory according to claim 2, characterized in that, At least one section of the attachment extends along an arc.

5. The accessory according to claim 2, characterized in that, α is less than or equal to 60°.

6. The accessory according to claim 1, wherein The extending length and width of the attachment are greater than its thickness.

7. The accessory according to claim 3, characterized in that, The second section of the attachment bends around the axis in the width direction of the attachment.

8. The accessory according to claim 1, wherein The attachment is used to be bonded to the buccal or lingual surface of the tooth and extend towards the occlusal surface of the tooth, and the shell-shaped tooth orthodontic appliance provides an uprighting moment to the tooth through the interaction with the attachment.

9. The accessory according to claim 1, characterized in that, The distance from the end of the second section of the attachment to the bonding surface is greater than or equal to 0.5 mm.

10. The accessory according to claim 1, wherein The second end of the attachment forms a protrusion on the side close to the bonding surface and a recess on the side far from the bonding surface.

11. A shell-shaped dental appliance, used for repositioning a patient's teeth from a first tooth arrangement to a second tooth arrangement, the shell-shaped dental appliance being an integral shell, forming a first cavity for accommodating a plurality of teeth and a second cavity for accommodating an accessory, the accessory being bonded to a surface of a first tooth, the shell-shaped dental appliance being capable of applying force and torque to the first tooth through interaction with the accessory, the accessory forming a bonding surface at a first end for bonding the accessory to the surface of the first tooth, the accessory being extended from the bonding surface, wherein: The line connecting the first end and the second end of the attachment forms an acute angle with the bonding surface, and the second end is the end far from the first end.

12. The shell-shaped tooth aligner according to claim 11, wherein, The included angle α between the extending direction of the attachment at the first end and the bonding surface is an acute angle, and the included angle θ between the extending direction of the attachment at the second end and the bonding surface is less than α.

13. The shell-like tooth aligner according to claim 12, characterized in that, The attachment extends from the bonding surface to form a first section, and extends from one end of the first section far from the bonding surface to form a second section, which bends towards the direction close to the bonding surface.

14. The shell-like tooth aligner according to claim 12, wherein At least one section of the attachment extends along an arc.

15. The shell-like tooth aligner according to claim 12, wherein, α is less than or equal to 60°.

16. The shell-like tooth aligner according to claim 11, wherein, The extending length and width of the attachment are greater than its thickness.

17. The shell-like tooth aligner according to claim 13, wherein The second section of the attachment bends around the axis in the width direction of the attachment.

18. The shell-shaped tooth aligner according to claim 11, wherein, The attachment is bonded to the buccal or lingual surface of the first tooth and extends towards the occlusal surface of the first tooth, and the shell-shaped tooth orthodontic appliance provides an uprighting moment to the first tooth through the interaction with the attachment.

19. The shell-shaped tooth aligner according to claim 11, wherein, The distance from the end of the second section of the attachment to the bonding surface is greater than or equal to 0.5 mm.

20. The shell-shaped tooth aligner according to claim 11, wherein, The second end of the attachment forms a protrusion on the side close to the bonding surface and a recess on the side far from the bonding surface.

21. A shell-shaped tooth aligner system, which includes an attachment bonded to the surface of a patient's first tooth and a shell-shaped tooth aligner. The shell-shaped tooth aligner is used to reposition the patient's teeth from a first tooth arrangement to a second tooth arrangement. It is an integral shell that forms a first cavity for accommodating multiple teeth of the patient and a second cavity for accommodating the attachment. The shell-shaped tooth aligner can apply forces and torques to the first tooth through interaction with the attachment. The attachment forms a bonding surface at a first end for bonding the attachment to the surface of the first tooth. The attachment extends from the bonding surface, wherein, The line connecting the first end and the second end of the attachment forms an acute angle with the bonding surface, and the second end is the end far from the first end.

22. The shell-shaped tooth aligner system according to claim 21, wherein, The included angle α between the extending direction of the attachment at the first end and the bonding surface is an acute angle, and the included angle θ between the extending direction of the attachment at the second end and the bonding surface is less than α.

23. The shell-like tooth aligner system according to claim 22, wherein, The attachment extends from the bonding surface to form a first section, and extends from one end of the first section far from the bonding surface to form a second section, which bends towards the direction close to the bonding surface.

24. The shell-like tooth aligner system according to claim 22, wherein, At least one section of the attachment extends along an arc.

25. The shell-shaped tooth aligner system according to claim 22, wherein, α is less than or equal to 60°.

26. The shell-like tooth aligner system according to claim 21, wherein, The extending length and width of the attachment are greater than its thickness.

27. The shell-shaped tooth aligner system according to claim 23, wherein, The second section of the attachment bends around the axis in the width direction of the attachment.

28. The shell-shaped tooth aligner system according to claim 21, wherein The attachment is bonded to the buccal or lingual surface of the first tooth and extends towards the occlusal surface of the first tooth. The shell-shaped tooth orthodontic appliance provides an uprighting moment to the first tooth through interaction with the attachment.

29. The shell-like tooth aligner system according to claim 21, wherein, The distance from the end of the second segment of the attachment to the bonding surface is greater than or equal to 0.5 mm.

30. The shell-like tooth aligner system according to claim 21, wherein, The second end of the attachment forms a protrusion on the side close to the bonding surface and a recess on the side away from the bonding surface.

31. An attachment for bonding to the occlusal surface of a tooth with insufficient height, such that a shell-shaped tooth orthodontic appliance worn on the tooth can apply an uprighting moment to the tooth through interaction with the attachment. The attachment forms a bonding surface at the first end for bonding the attachment to the occlusal surface of the tooth, and the attachment extends from the bonding surface towards the opposing jaw.

32. The accessory according to claim 31, characterized in that, The attachment extends from the bonding surface to form a first segment, and extends from the end of the first segment away from the bonding surface to form a second segment. The transverse dimension of the second segment is smaller than that of the first segment.

33. The accessory according to claim 32, wherein, The extending direction of the first segment is the first direction, and the extending direction of the second segment is the second direction. An acute angle is formed between the first direction and the second direction.

34. The accessory according to claim 33, wherein, The second direction is inclined towards the direction opposite to the long axis direction of the tooth.

35. The accessory according to claim 31, characterized in that, The angle between the line connecting the two ends of the attachment and the vertical direction is an acute angle less than 45°, and the line is inclined towards the direction opposite to the long axis direction of the tooth.

36. The accessory according to claim 31, wherein, The height of the attachment is such that there is a gap greater than or equal to 0.5 mm between the corresponding part of the shell-shaped tooth orthodontic appliance and the opposing jaw at the top of the attachment in the occlusal state.

37. A shell-like tooth aligner for repositioning a patient's teeth from a first tooth arrangement to a second tooth arrangement, characterized in that, The shell-shaped tooth orthodontic appliance is an integral shell, forming a first cavity for accommodating multiple teeth and a second cavity for accommodating a first attachment. The first attachment is bonded to the occlusal surface of a first tooth with insufficient height. The shell-shaped tooth orthodontic appliance can apply an uprighting moment to the first tooth through interaction with the first attachment. The first attachment forms a bonding surface at the first end for bonding the first attachment to the occlusal surface of the first tooth, and the first attachment extends from the bonding surface towards the opposing jaw.

38. The shell-like tooth aligner according to claim 37, wherein, The first attachment extends from the bonding surface to form a first segment, and extends from the end of the first segment away from the bonding surface to form a second segment. The transverse dimension of the second segment is smaller than that of the first segment.

39. The shell-shaped tooth orthodontic appliance according to claim 38, wherein the extending direction of the first segment is the first direction, and the extending direction of the second segment is the second direction. An acute angle is formed between the first direction and the second direction.

40. The shell-shaped tooth aligner according to claim 39, characterized in that, The second direction is inclined towards the direction opposite to the long axis direction of the first tooth.

41. The shell-shaped tooth aligner according to claim 37, wherein, The angle between the line connecting the two ends of the first attachment and the vertical direction is an acute angle less than 45°, and the line is inclined towards the direction opposite to the long axis direction of the first tooth.

42. The shell-shaped tooth aligner according to claim 37, wherein, There is a gap between the corresponding part of the shell-shaped tooth orthodontic appliance and the opposing jaw at the top of the first attachment in the occlusal state, and the gap is greater than or equal to 0.5 mm.

43. The shell-shaped tooth aligner according to claim 37, wherein, The shell-shaped tooth aligner further forms a third cavity and a fourth cavity for respectively accommodating a second attachment and a third attachment. The second attachment is bonded to the buccal surface of the first tooth, and the third attachment is bonded to the lingual surface of the first tooth.

44. The shell-like tooth aligner according to claim 37, wherein, The bonding surface of the first attachment is based on the middle position of the occlusal surface of the first tooth.

45. A shell-like tooth aligner system, comprising a first attachment bonded to the occlusal surface of a patient's first tooth and a shell-like tooth aligner, characterized in that, The shell-shaped tooth aligner is used to reposition the patient's teeth from a first tooth layout to a second tooth layout. It is an integral shell that forms a first cavity for accommodating multiple teeth of the patient and a second cavity for accommodating the first attachment. The shell-shaped tooth aligner can apply an uprighting moment to the first tooth through interaction with the first attachment. The first attachment forms a bonding surface at the first end for bonding the first attachment to the occlusal surface of the first tooth, and the first attachment extends from the bonding surface in the direction of the opposing tooth.

46. The shell-like tooth aligner system according to claim 45, wherein, The first attachment extends from the bonding surface to form a first segment, and extends from the end of the first segment away from the bonding surface to form a second segment. The lateral dimension of the second segment is smaller than that of the first segment.

47. The shell-like tooth aligner system according to claim 46, wherein, The extending direction of the first segment is a first direction, and the extending direction of the second segment is a second direction. An acute angle is formed between the first direction and the second direction.

48. The shell-like tooth aligner system according to claim 47, wherein, The second direction is inclined towards the direction opposite to the upright axis direction of the first tooth.

49. The shell-like tooth aligner system according to claim 45, wherein, The included angle between the line connecting the two ends of the first attachment and the vertical direction is an acute angle less than 45°, and the line is inclined towards the direction opposite to the upright axis direction of the first tooth.

50. The shell-like tooth aligner system according to claim 45, wherein, In the occlusal state, there is a gap between the part of the shell-shaped tooth aligner corresponding to the top of the first attachment and the opposing tooth, and the gap is greater than or equal to 0.5 mm.

51. The shell-like tooth aligner system according to claim 45, wherein, It further includes a second attachment and a third attachment. The shell-shaped tooth aligner further forms a third cavity and a fourth cavity for respectively accommodating the second attachment and the third attachment. The second attachment is bonded to the buccal surface of the first tooth, and the third attachment is bonded to the lingual surface of the first tooth.

52. The shell-like tooth aligner system according to claim 45, wherein, The bonding surface of the first attachment is based on the middle position of the occlusal surface of the first tooth.

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