Accessory, shell-shaped orthodontic appliance and shell-shaped orthodontic appliance system

Abstract

On one hand, the utility model provides the accessory which is used for being adhered to the surface of the tooth, so that the shell-shaped tooth appliance worn on the tooth can apply force and torque to the tooth through the interaction with the accessory, and the accessory forms an adhering surface for adhering the accessory to the surface of the tooth at a first end. The attachment is formed by extending from the bonding surface, an acute angle is formed between the connecting line of the first end and the second end of the attachment and the bonding surface, and the second end is the tail end far away from the first end.

Description

Technical Field

[0001] The utility model generally relates to an accessory, a shell-shaped dental appliance and a shell-shaped dental appliance system. Background Art

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

[0003] The shell-shaped dental appliance is an integral shell that forms a cavity for accommodating a plurality of teeth, and the geometry of the cavity substantially matches the teeth in a corresponding arrangement.

[0004] Orthodontic treatment using shell-shaped dental appliances generally requires dozens of successive shell-shaped dental appliances, and the patient's teeth are gradually repositioned from an initial tooth configuration to a target tooth configuration by successively wearing these shell-shaped dental appliances.

[0005] Shell-shaped dental appliances use the rebound force generated by deformation to reposition the patient's teeth from the current tooth layout to the predetermined tooth layout. A single shell-shaped dental appliance has limited effects in some movements, such as axis alignment, rotation, torque, and root control. Therefore, when orthodontic treatment involves these tooth movements, accessories are usually bonded to the tooth surface to enhance the effects of these movements by squeezing and friction between the shell-shaped dental appliance and the accessories.

[0006] However, the existing attachments have limited effect in improving the above movement, and therefore, it is necessary to provide a new attachment. Utility Model Content

[0007] One aspect of the utility model provides an accessory for bonding to the surface of a tooth so that a shell-shaped dental appliance worn on the tooth can apply force and torque to the tooth through interaction with the accessory, wherein the accessory forms a bonding surface at the first end for bonding the accessory to the surface of the tooth, and the accessory is 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.

[0008] 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.

[0009] 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 a direction close to the bonding surface.

[0010] In some embodiments, at least a section of the appendage extends along an arc.

[0011] In some embodiments, α is less than or equal to 60°.

[0012] In some embodiments, the appendage extends to a greater length and width than its thickness.

[0013] In some embodiments, the second section of the attachment is bent around an axis in the width direction of the attachment.

[0014] In some embodiments, the attachment is used to bond to the buccal or lingual side of the tooth and extend it 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.

[0015] 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.

[0016] In some embodiments, the second end of the attachment forms a protrusion on a side close to the bonding surface, and forms a recess on a side away from the bonding surface.

[0017] Another aspect of the utility model 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 a plurality of teeth and a second cavity for accommodating an accessory, wherein the accessory is bonded to the surface of a first tooth, and the shell-shaped dental appliance can apply force and torque to the first tooth through interaction with the accessory, wherein the accessory forms a bonding surface at a first end for bonding the accessory to the surface of the first tooth, and the accessory is 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.

[0018] 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.

[0019] 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 a direction close to the bonding surface.

[0020] In some embodiments, at least a section of the appendage extends along an arc.

[0021] In some embodiments, it is characterized in that α is less than or equal to 60°.

[0022] In some embodiments, the appendage extends to a greater length and width than its thickness.

[0023] In some embodiments, the second section of the attachment is bent around an axis in the width direction of the attachment.

[0024] 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.

[0025] 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.

[0026] In some embodiments, the second end of the attachment forms a protrusion on a side close to the bonding surface, and forms a recess on a side away from the bonding surface.

[0027] Another aspect of the utility model provides a shell-shaped dental appliance system, which includes an attachment bonded to the surface of a first tooth of a patient 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, and is an integral shell, forming a first cavity for accommodating multiple teeth of the patient and a second cavity for accommodating the attachment, and the shell-shaped dental appliance can apply force and torque to the first tooth through interaction with the attachment, and the attachment forms a bonding surface at the 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.

[0028] 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.

[0029] 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 a direction close to the bonding surface.

[0030] In some embodiments, at least a section of the appendage extends along an arc.

[0031] In some embodiments, α is less than or equal to 60°.

[0032] In some embodiments, the appendage extends to a greater length and width than its thickness.

[0033] In some embodiments, the second section of the attachment is bent around an axis in the width direction of the attachment.

[0034] 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.

[0035] 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.

[0036] In some embodiments, the second end of the attachment forms a protrusion on a side close to the bonding surface, and forms a recess on a side away from the bonding surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and other features of the present application will be further described below in conjunction with the accompanying drawings and detailed descriptions thereof. It should be understood that these drawings only illustrate several exemplary embodiments according to the present application and should not be considered as limiting 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.

[0038] Figures 1A-1C The attachment bonded to the buccal side of the tooth in one embodiment of the present application is schematically shown;

[0039] Figure 2 Schematically showing a shell-shaped dental appliance and Figures 1A-1C The matching relationship of the accessories shown;

[0040] Figure 3A Schematically showing a shell-shaped dental appliance in one embodiment Figures 1A-1C the forces exerted on the teeth by the indicated attachments; and

[0041] Figure 3B Schematically showing another embodiment of a shell-shaped dental appliance through Figures 1A-1C The forces exerted by the attachments on the teeth are shown. DETAILED DESCRIPTION

[0042] The following detailed description refers to the 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 the present application. Under the enlightenment of the present 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 the present 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, and these different configurations are within the scope of protection of the present application.

[0043] Please refer to Figures 1A-1C , schematically shows an attachment 103 bonded to the buccal side of a tooth 101 in one embodiment of the present application, wherein: Figure 1A This is a buccolingual view. Figure 1B This is a mesiodistal view. Figure 1C It is a vertical view.

[0044] One end of the attachment 103 forms a bonding surface 1031 for bonding the attachment 103 to the tooth surface. A first section 1033 is extended from the bonding surface 1031, and the angle α between the extension direction and the bonding surface 1031 is an acute angle. A second section 1035 is extended from one end of the first section 1033 away from the bonding surface 1031, and is bent toward the bonding surface 1031, so that the angle θ between the extension direction of the second section 1035 and the bonding surface 1031 is smaller than α.

[0045] exist Figures 1A-1C In the illustrated embodiment, 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 reduce the height of the attachment 103 protruding from the surface of the tooth 101 on the one hand, and facilitates the demolding of the shell-shaped dental appliance in the hot pressing film molding process on the other hand, and also facilitates the removal of the shell-shaped dental appliance worn on the patient's dentition.

[0046] In one embodiment, α is less than or equal to 60°.

[0047] 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.

[0048] In one embodiment, the bonding surface 1031 may be a plane. In another embodiment, the bonding surface 1031 may be a curved surface, in which 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 section 1033 is used as the angle between the bonding surface 1031 and the extension direction of the first section 1033.

[0049] The total extension length L of the attachment 103 (i.e., the sum of the extension length of the first section 1033 and the extension length of the second section 1035) is greater than the thickness T, which increases the length of the lever, thereby enabling the shell-shaped dental appliance to apply a larger 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, thereby improving the bonding strength of the attachment 103. The second section 1035 of the attachment 103 is bent around an axis in the width direction.

[0050] Please refer to Figure 2 , schematically showing a shell-shaped dental appliance 105 and Figures 1A-1C The matching relationship between the tooth 101 and the attachment 103 is shown.

[0051] The shell-shaped dental appliance 105 is an integrated shell, forming a cavity 1051 for accommodating teeth and a cavity 1053 for accommodating accessories 103. The shell-shaped dental appliance 105 worn on the patient's dentition applies force and torque to the teeth 101 through the accessories 103 by squeezing and / or friction with the accessories 103.

[0052] In one embodiment, the shell-shaped dental appliance 105 may be in contact with the attachment 103 only in the force application area, and a gap 1055 may be reserved between the other parts and the attachment 103 .

[0053] 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 end of the attachment 103 .

[0054] Please refer to Figure 3A , schematically shows the force applied by a shell-shaped dental appliance (not shown) to a tooth 101 through an attachment 103 in one embodiment. In this example, the shell-shaped dental appliance applies a buccal-lingual force F to the attachment 103 near the end thereof. 1 , which generates a lingual tilting moment t on tooth 101 1 .

[0055] Please refer to Figure 3B , schematically shows the force applied by a shell-shaped dental appliance (not shown) to a tooth 101 through an attachment 103 in another embodiment. In this example, the shell-shaped dental appliance applies a mesiodistal force F to the attachment 101 near the end thereof. 2 , which exerts a distal torque t on tooth 101 2 .

[0056] 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.

[0057] In yet another embodiment, the attachment of the present application may also be in one-section format.

[0058] 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.

[0059] 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.

[0060] In one embodiment, the end of the attachment may be convex on the side close to the bonding surface and concave on the side away from the bonding surface. This structure can enhance the fit between the shell-shaped dental appliance and the attachment and reduce the height of the attachment protruding from the tooth surface.

[0061] Although various aspects and embodiments of the present application are disclosed herein, other aspects and embodiments of the present application will be apparent to those skilled in the art in light of the present application. The various aspects and embodiments disclosed herein are for illustrative purposes only and not for limiting purposes. The scope and subject matter of the present application are determined solely by the appended claims.

[0062] Likewise, various diagrams may illustrate exemplary architectures or other configurations of the disclosed methods and systems that aid in understanding the features and functions 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 with various alternative architectures and configurations. In addition, for flow charts, functional descriptions, and method claims, the order of blocks presented herein should not be limited to various embodiments that are implemented in the same order to perform the described functions, unless otherwise clearly indicated in the context.

[0063] Unless otherwise expressly noted, the terms and phrases used herein and their variations should be interpreted as open ended, not 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 an intent or need to indicate a narrowing of the example where such broad terms may not be present.

Claims

1. An attachment for bonding to a tooth surface so that a shell-shaped dental appliance worn on the tooth can exert force and torque on the tooth through interaction with the attachment, characterized in that: The attachment forms a bonding surface at the 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.

2. The accessory according to claim 1, characterized in that 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.

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 an end of the first section away from the bonding surface to form a second section, which is bent toward a direction close to the bonding surface.

4. The accessory according to claim 2, characterized in that At least one section of the appendage 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, characterized in that The extension 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 is bent around an axis in the width direction of the attachment.

8. The accessory according to claim 1, characterized in that The attachment is used to be bonded to the buccal side or the lingual side of the tooth and extend toward the maxillofacial direction of the tooth. The shell-shaped dental appliance provides a positive axis torque to the tooth through interaction with the attachment.

9. The accessory according to claim 1, characterized in that 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.

10. The accessory according to claim 1, characterized in that 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.

11. A shell-shaped dental appliance for repositioning a patient's teeth from a first tooth configuration to a second tooth configuration, characterized in that: The shell-shaped dental appliance is an integral shell, forming a first cavity for accommodating multiple teeth and a second cavity for accommodating an accessory, the accessory is bonded to the surface of a first tooth, the shell-shaped dental appliance can apply force and torque to the first tooth through interaction with the accessory, the accessory forms a bonding surface at the first end for bonding the accessory to the surface of the first tooth, the accessory is 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.

12. The shell-shaped dental appliance according to claim 11, characterized in that: 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.

13. The shell-shaped dental appliance according to claim 12, characterized in that: 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 a direction close to the bonding surface.

14. The shell-shaped dental appliance according to claim 12, characterized in that: At least one section of the appendage extends along an arc.

15. The shell-shaped dental appliance according to claim 12, characterized in that: α is less than or equal to 60°.

16. The shell-shaped dental appliance according to claim 11, characterized in that: The extension length and width of the attachment are greater than its thickness.

17. The shell-shaped dental appliance according to claim 13, characterized in that: The second section of the attachment is bent around an axis in the width direction of the attachment.

18. The shell-shaped dental appliance according to claim 11, characterized in that: The attachment is bonded to the buccal side or the lingual side of the first tooth and extends toward the maxillofacial direction of the first tooth. The shell-shaped dental appliance provides a positive axis torque to the first tooth through interaction with the attachment.

19. The shell-shaped dental appliance according to claim 11, characterized in that: 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.

20. The shell-shaped dental appliance according to claim 11, characterized in that: 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.

21. A shell-shaped dental appliance system, comprising an attachment bonded to a surface of a first tooth of a patient and a shell-shaped dental appliance, characterized in that: 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 the patient's multiple teeth 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 the 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.

22. The shell-shaped dental appliance system according to claim 21, characterized in that 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.

23. The shell-shaped dental appliance system according to claim 22, characterized in that: 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 a direction close to the bonding surface.

24. The shell-shaped dental appliance system of claim 22, wherein: At least one section of the appendage extends along an arc.

25. The shell-shaped dental appliance system of claim 22, wherein: α is less than or equal to 60°.

26. The shell-shaped dental appliance system of claim 21, wherein: The extension length and width of the attachment are greater than its thickness.

27. The shell-shaped dental appliance system of claim 23, wherein: The second section of the attachment is bent around an axis in the width direction of the attachment.

28. The shell-shaped dental appliance system of claim 21, wherein: The attachment is bonded to the buccal side or the lingual side of the first tooth and extends toward the maxillofacial direction of the first tooth. The shell-shaped dental appliance provides a positive axis torque to the first tooth through interaction with the attachment.

29. The shell-shaped dental appliance system of claim 21, wherein: 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.

30. The shell-shaped dental appliance system of claim 21, wherein: 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.

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