Accessory mounting system and accessory

Abstract

The embodiment of the utility model provides an accessory mounting system and an accessory, the accessory mounting system comprises an accessory template and a separator, the accessory template comprises a first tooth accommodating cavity for accommodating at least part of teeth of a patient, an extension part extending from the gingival end of the first tooth accommodating cavity to the gingival side and a first accessory cavity, the first accessory cavity comprises a tooth accessory cavity arranged in the first tooth accommodating cavity and a gingival accessory cavity arranged in the extension part, and the tooth accessory cavity is communicated with the gingival accessory cavity. At least part of the isolation piece is located between the gingival accessory cavity and the gingiva so that the accessory formed by the first accessory cavity can not make contact with the gingiva. According to the accessory installation system in each embodiment of the invention, the installation of a large accessory exceeding the dental crown part on the tooth is realized, and the condition that the accessory is in contact with the gingiva or extrudes the gingiva after being installed is avoided.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of orthodontics, and particularly to an attachment installation system and an attachment. Background Art

[0002] A shell-shaped orthodontic appliance is a continuous tooth orthodontic device that corrects malformed teeth by continuously moving them within a reduced range. When in use, most shell-shaped orthodontic appliances cooperate with attachments pasted on the teeth to improve the retention force of the shell-shaped orthodontic appliance on the teeth, or apply additional orthodontic force to the teeth to accelerate the tooth correction process.

[0003] Currently, the attachments in the prior art only cover the tooth surface. For such attachments, they can be manually bonded to the patient's tooth surface by professional orthodontists or pasted using a pre-designed attachment template. The existing attachment template is obtained by printing the initial digital dental model of the patient with the attachment model designed thereon through 3D printing technology, and then laminating the attachment template by thermoforming technology relying on the printed dental model. The attachment template has an attachment cavity capable of obtaining the shape of the attachment. Professional orthodontists inject a photocurable flowing or semi-flowing material, such as resin, into the attachment cavity so that the material forms the required attachment shape in the attachment cavity, and then the attachment template is worn in the patient's mouth for positioning and curing of the attachment.

[0004] However, the above-mentioned attachment template can only wrap the crown area of the tooth, that is, this type of attachment template is only applicable to the case where the attachment covers the crown. However, the movement of the tooth requires the overall movement of the alveolar bone of the crown. Since the existing attachments can only apply force to the crown, the design of mechanics in the orthodontic treatment plan is thus limited.

[0005] Therefore, it is necessary to provide a new attachment and a template for installing this attachment to achieve more designs of orthodontic forces. Summary of the Utility Model

[0006] The purpose of the embodiments of the present application is to provide a novel attachment template system and an attachment, which can achieve more types of orthodontic force designs.

[0007] To achieve the above object, an embodiment of the present application provides an accessory mounting system, including an accessory template and a spacer. The accessory template includes a first tooth receiving cavity for receiving at least part of the patient's teeth, an extension portion extending from the gingival end of the first tooth receiving cavity towards the gingiva, and a first accessory cavity. The first accessory cavity includes a tooth accessory cavity provided in the first tooth receiving cavity and a gingival accessory cavity provided in the extension portion. The tooth accessory cavity and the gingival accessory cavity are communicatively provided. When worn, at least part of the spacer is located between the gingival accessory cavity and the gingiva so that the accessory formed through the first accessory cavity does not contact the gingiva.

[0008] Preferably, the spacer includes a spacer body and a positioning portion for fixing the spacer body. The positioning portion can be fixed to the tooth or the accessory template.

[0009] Preferably, when the positioning portion is fixed to the tooth, one end of the positioning portion is connected to the spacer, and the other end forms a hooking structure; the hooking structure can be hooked on other teeth of the dental arch wrapped by the first tooth receiving cavity.

[0010] Preferably, when the positioning portion is fixed to the tooth, the positioning portion is a second tooth receiving cavity for receiving the tooth. The first tooth receiving cavity and the second tooth receiving cavity receive the teeth on the same jaw and the corresponding received teeth do not overlap.

[0011] Preferably, the geometric shape of the first tooth receiving cavity and the geometric shape of the second tooth receiving cavity match the shape of a dental arch under the patient's current tooth layout.

[0012] Preferably, the second tooth receiving cavity includes sub-second tooth receiving cavities located on both sides of the first tooth receiving cavity. The adjacent sub-second tooth receiving cavities are connected by a connecting portion. The connecting portion is located in the labial / buccal and / or lingual gingival region. The portion of the connecting portion corresponding to the gingival accessory cavity forms the spacer body.

[0013] Preferably, when the connecting portion is located in the labial / buccal and lingual gingival regions, the adjacent sub-second tooth receiving cavities and the connecting portion enclose a hollow space. When worn, the teeth corresponding to the hollow space at least include the teeth wrapped by the first tooth receiving cavity.

[0014] Preferably, a second accessory cavity is provided on the second tooth receiving cavity.

[0015] Preferably, when the positioning portion is positioned on the accessory template, the positioning portion and the positioning groove provided on the extension portion are detachably connected.

[0016] Preferably, a snap fit with a concave-convex match is provided between the positioning groove and the positioning portion.

[0017] Preferably, the material of the separator is softer than that of the attachment template so that the separator fits the covered gingival surface after being worn.

[0018] An embodiment in the present application further provides an attachment, including a fixing portion for fixing to the surface of a dental crown and an extension portion connected to the fixing portion. When the fixing portion is attached to the surface of a tooth crown, at least a part of the extension portion corresponds to the gingival area of the tooth where the fixing portion is located, and the surface of the extension portion adjacent to the gingival area does not contact the gingival area.

[0019] Preferably, when the fixing portion is attached to the surface of a tooth crown, in the gingivo-occlusal direction, the free end of the extension portion is set corresponding to the center of resistance of the tooth root of the tooth where the fixing portion is located, or the free end of the extension portion exceeds the center of resistance of the tooth root of the tooth where the fixing portion is located.

[0020] An attachment installation system provided by the utility model realizes the installation of a large attachment exceeding the crown part on a tooth. The attachment installation system includes an attachment template and a separator. The attachment template includes a tooth attachment cavity and a gingival attachment cavity for forming an attachment exceeding the crown part. The function of the separator is to prevent the fluid resin from contacting the gingiva during the installation of the attachment, thereby avoiding adhesion to the gingiva. Also, due to the separator having a certain thickness, the part of the gingiva corresponding to the attachment will not contact the gingiva during the process of cooperating with the shell-shaped orthodontic appliance after the attachment is cured, thus avoiding the extrusion of the gingiva by this type of attachment during use.

[0021] An attachment provided by the utility model includes a fixing portion attached to a tooth and an extension portion corresponding to the gingival area. During the interaction with the shell-shaped orthodontic appliance, the design of the extension portion can increase the orthodontic force on the tooth root area corresponding to the tooth, make the acting point of the orthodontic force closer to the center of resistance, and thus make the movement effect of the tooth more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the drawings in the figures do not constitute a scale limitation.

[0023] Figure 1 is a schematic diagram of an attachment formed by an attachment installation system pasted on a tooth in some embodiments of the present application;

[0024] Figure 2It is a schematic structural diagram of an accessory installation system in some embodiments of the present application;

[0025] Figure 3 is Figure 2 a schematic cross-sectional structural diagram along the sagittal plane of the accessory installation system corresponding to the embodiment in

[0026] Figure 4 It is a schematic structural diagram of a spacer in some embodiments of the present application;

[0027] Figure 5 It is a schematic structural diagram of an accessory installation system in some embodiments of the present application;

[0028] Figure 6 It is a schematic structural diagram of a spacer in some embodiments of the present application;

[0029] Figure 7 It is a schematic structural diagram of an accessory installation system in some other embodiments of the present application;

[0030] Figure 8 It is a schematic structural diagram of a spacer in some other embodiments of the present application;

[0031] Figure 9 It is a schematic structural diagram of an accessory installation system in some other embodiments of the present application;

[0032] Figure 10 It is a schematic structural diagram of a positioning portion and a positioning groove in some embodiments of the present application;

[0033] Figure 11 It is a schematic structural diagram of a positioning portion and a positioning groove in some other embodiments of the present application;

[0034] Figure 12 It is a schematic structural diagram of an accessory in some embodiments of the present application;

[0035] Figure 13 is Figure 12 a schematic cross-sectional diagram along the sagittal plane of the embodiment in Detailed implementation manners

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will elaborate on each implementation manner of the present application with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that in each implementation manner of the present application, many technical details are presented for the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation manners, the technical solutions claimed in the present application can still be achieved. The division of the following various embodiments is for convenience of description and should not constitute any limitation to the specific implementation manners of the present application. The various embodiments can be combined and cross-referenced with each other on the premise of no contradiction.

[0037] In each embodiment of the present application, the "posterior tooth area" is defined according to the tooth classification on pages 36 - 38 of the second edition of "Introduction to Stomatology" published by Peking University Medical Press, including premolars and molars, which are teeth numbered 4 - 8 in the FDI notation, and the anterior tooth area is teeth numbered 1 - 3 in the FDI notation. The teeth in the anterior tooth area include central incisors, lateral incisors, and canines. In addition, for teeth in the primary dentition stage, the "posterior tooth area" is defined according to the classification of primary teeth on pages 40 - 41 of the second edition of "Introduction to Stomatology" published by Peking University Medical Press, including three categories: primary incisors, primary canines, and primary molars. Among them, primary incisors include primary central incisors and primary lateral incisors, and primary molars include the first primary molar and the second primary molar.

[0038] The shell - shaped body is provided with several cavities for accommodating multiple teeth, and is divided into a lingual surface, a labial surface, a mesial surface, and a distal surface. Among them, the "lingual surface" is named according to the naming of each surface of the dental crown on pages 35 - 36 of the second edition of "Introduction to Stomatology" published by Peking University Medical Press. Among them, the labial surface and the buccal surface: for the dental crown of anterior teeth, the side close to the lips is the labial surface, and for the dental crown of posterior teeth, the side close to the cheek is the buccal surface. The lingual surface is the general name for the side of the dental crown of anterior and posterior teeth close to the tongue. The mesial surface and the distal surface are the two surfaces where the dental crown is adjacent to adjacent teeth, collectively called the adjacent surface. The surface closer to the mid - face of the face is called the mesial surface, and the surface farther from the mid - face of the face is called the distal surface.

[0039] This article describes the implementation of the installation of large attachments on teeth that exceed the crown part. Generally, in the prior art in the field of invisible orthodontics, the attachments used to apply additional forces to teeth are all pasted on the surface of the dental crown of teeth. However, for the overall movement of teeth, the closer the force application point is to the center of resistance located at the tooth root, the better the overall movement effect. Therefore, the present application provides a large attachment that exceeds the crown part of the tooth. As shown in Figure 1 Attachment 200 pasted on tooth 100 that exceeds the dental crown and extends towards the gingiva. Such an attachment can move the force application point of the shell - shaped appliance on the attachment from the crown to a position closer to the center of resistance. The installation of such attachments is the main problem to be solved by the attachment installation system in the present application.

[0040] The attachment installation system in the present application includes an attachment template and a spacer. The attachment template includes a first tooth receiving cavity for accommodating at least part of the patient's teeth, an extension portion extending gingivally from the gingival end of the first tooth receiving cavity, and a first attachment cavity. The first attachment cavity includes a tooth attachment cavity provided in the first tooth receiving cavity and a gingival attachment cavity provided in the extension portion. The tooth attachment cavity and the gingival attachment cavity are connected. When worn, at least part of the spacer is located between the gingival attachment cavity and the gingiva so that the attachment formed through the first attachment cavity does not contact the gingiva.

[0041] The following describes each embodiment in the present application with reference to the accompanying drawings.

[0042] To achieve the above object, referring to Figure 2 and Figure 3 As shown, an embodiment of the present application provides an accessory mounting system including an accessory template 1 and a separator 2. The accessory template 1 includes a first tooth receiving cavity 11 for receiving at least a part of the patient's teeth, an extension 12 extending from the gingival end of the first tooth receiving cavity 11 towards the gingiva, and a first accessory cavity 3. The first accessory cavity 3 includes a tooth accessory cavity 31 provided in the first tooth receiving cavity 11 and a gingival accessory cavity 32 provided in the extension 12. The tooth accessory cavity 31 and the gingival accessory cavity 32 are communicatively provided. The first accessory cavity 3 can be provided on the lingual side and / or the labial / buccal side according to the actual accessory requirements. When the accessory mounting system is worn, at least a part of the separator 2 is located between the gingival accessory cavity 32 and the gingiva so that the accessory 200 formed through the first accessory cavity 3 does not contact the gingiva 300. The thickness of the separator 2 itself is between 5 mm and 20 mm. Such a thickness design can ensure that the accessory formed through the first accessory cavity 3 does not contact the gingiva and maintains a certain distance, thereby avoiding squeezing the gingiva by such an accessory during use, which may cause problems such as gingival inflammation and atrophy. Moreover, according to the physiological structure characteristics in the oral cavity, the thickness of the separator 2 itself being between 5 mm and 20 mm can also ensure the comfort of the accessory in the oral cavity.

[0043] In some embodiments, the separator 2 can be fixed to the gingiva, mainly by providing an adhesive on the surface of the separator 2 close to the gingiva for oral adhesion to the gingival surface. During the use of the accessory mounting system, first, the separator 2 is bonded to the corresponding gingival surface, then the tooth accessory cavity 31 and the gingival accessory cavity 32 in the first accessory cavity 3 are filled with resin, and then the accessory template 1 is worn on the teeth through the first tooth receiving cavity 11. At this time, the separator 2 isolates the gingiva from the resin in the gingival accessory cavity 32. Thus, the pasted accessory does not contact the gingiva.

[0044] In some embodiments, the separator 2 includes a separator body 21 and a positioning portion 22 for fixing the separator body. The positioning portion 22 can be fixed to the teeth or the accessory template 1. Referring to Figure 4As shown, when the positioning part 22 is fixed on a tooth, one end of the positioning part 22 is connected to the spacer 2, and the other end forms a hooking structure; in order to avoid the problem of inaccurate attachment when the positioning part 22 overlaps with the attachment template 1, the hooking structure can be hooked on other teeth of the dental arch where the tooth wrapped by the first tooth receiving cavity 11 is located. For example, when attaching an attachment to the central incisor in the anterior tooth area, in order to enhance the stability of the attachment template 1 on the tooth, the first tooth receiving cavity 11 covers at least four teeth including the central incisor and the lateral incisor in the anterior tooth area, and the hooking structure is hooked on the teeth other than the central incisor and the lateral incisor. During use, first fix the spacer body 21 at the corresponding gingival position through the hooking structure, then apply resin evenly in the tooth attachment cavity 31 and the gingival attachment cavity 32 in the first attachment cavity 3, and then wear the attachment template 1 on the tooth through the first tooth receiving cavity 11. At this time, the spacer 2 isolates the gingiva from the resin in the gingival attachment cavity 32.

[0045] In some other embodiments, referring to Figures 5 - 7 As shown, when the positioning part 22 is fixed on a tooth, the positioning part 22 is a second tooth receiving cavity for accommodating the tooth. In order to avoid the problem of inaccurate attachment when the second tooth receiving cavity overlaps with the first tooth receiving cavity 11, the first tooth receiving cavity 11 and the second tooth receiving cavity accommodate the teeth on the same jaw and the corresponding accommodated teeth do not coincide. Further, the geometric shape of the first tooth receiving cavity 11 and the geometric shape of the second tooth receiving cavity match the shape of a dental arch of the patient's current tooth layout, that is, the first tooth receiving cavity 11 and the second tooth receiving cavity are generated according to the dental arch layout of the patient's current upper or lower teeth. After the first tooth receiving cavity 11 and the second tooth receiving cavity are worn, the patient's teeth fit completely without moving, so as to ensure that the attachment position is consistent with the designed position, thereby improving the accuracy of the attachment formed by the attachment template 1 during the orthodontic treatment.

[0046] Further explanation, when the tooth for attaching the attachment is not the terminal tooth, that is, the tooth corresponding to the first attachment cavity 3 is not the terminal tooth, in order to further improve the stability of the spacer 2 during wearing, that is, not to move relative to the gingiva, the second tooth receiving cavity includes sub-second tooth receiving cavities located on both sides of the first tooth receiving cavity 11, and the adjacent sub-second tooth receiving cavities are connected by a connecting part 23. The connecting part 23 is located in the labial-buccal side and / or lingual gingival area, and the part of the connecting part 23 corresponding to the first attachment cavity 3 forms the spacer body 21. For example, referring to Figure 5 and Figure 6As shown, the connecting portion 23 is located in the gingival area on the labial / buccal or lingual side. The connecting portion 23 is respectively connected to the sub-second tooth receiving cavity 22a and the sub-second tooth receiving cavity 22b. When worn, the connecting portion 23 corresponds to the gingival area. The part of the connecting portion 23 corresponding to the gingival attachment cavity 32 on the attachment template 1 is the isolation member body 21. For another example, refer to Figure 7 As shown, the connecting portion 23 is located in the gingival areas on the labial / buccal and lingual sides. The part of the connecting portion 23 on one side corresponding to the gingival attachment cavity 32 on the first attachment cavity 3 is the isolation member body. The connecting portion 23 on the other side mainly functions to connect the sub-second tooth receiving cavity 22a and the sub-second tooth receiving cavity 22b. The advantage of such a design is to enhance the stability of the positioning portion 22. And, further preferably, when the connecting portion 23 is located in the gingival areas on the labial / buccal and lingual sides, an adjacent sub-second tooth receiving cavity and the connecting portion 23 enclose a hollow space. When worn, the teeth corresponding to the hollow space at least include the teeth wrapped by the first tooth receiving cavity 11. Further, the teeth corresponding to the hollow space include all the teeth wrapped by the first tooth receiving cavity 11. Such a design can make the second tooth receiving cavity adjacent to the first tooth receiving cavity 11, and the first tooth receiving cavity 11 and the second tooth receiving cavity can wrap all the teeth on the dental arch. For all the teeth on the dental arch, the attachment installation system in the present application can be used to install attachments.

[0047] In some embodiments, refer to Figure 8 As shown, a second attachment cavity is provided on the second tooth receiving cavity. The second attachment cavity 221 is a protrusion formed in the direction away from the tooth, and can be used for the formation of other attachments on the tooth crown, such as the formation of an elliptical attachment, a rectangular attachment, or a triangular attachment commonly used in invisible orthodontics.

[0048] In some embodiments, when the positioning portion 22 is positioned on the attachment template 1, the positioning portion 22 and the positioning groove 13 provided on the extension portion 12 are detachably connected. Specifically, refer to Figure 9 and Figure 10As shown, a snap fit with a concave-convex match is formed between the positioning groove 13 and the positioning portion 22. The positioning portion 22 is formed by protruding from the separator body 21 toward the attachment template 1, and the positioning groove 13 is a groove structure that matches the shape and size of the positioning portion 22. Such a structural design is simple and the clinical operation is convenient and flexible. During the use of the attachment installation system, first apply resin evenly in the tooth attachment cavity 31 and the gingival attachment cavity 32 in the first attachment cavity 3, then fix the separator 2 on the attachment template 1 through the positioning portion 22 and the positioning groove 13, and then wear the attachment template 1 and the separator 2 together on the tooth, and bond the attachment to the tooth surface through light curing. When the attachment installation system is detached from the tooth after the attachment is light-cured, since the formed attachment is stuck between the separator 2 and the extension portion 12, it is very difficult to remove the separator 2 and the attachment template 1 from the tooth without being damaged. The detachable structure between the positioning portion 22 and the positioning groove 13 solves this problem well. After the attachment is formed, the positioning portion 22 and the positioning groove 13 can be separated first, and then the attachment template 1 and the separator 2 can be removed separately.

[0049] In some embodiments, referring to Figure 11As shown, there is a snap fit between the positioning groove 13 and the positioning portion 22. The positioning portion 22 is formed by a protrusion from the separator body 21 towards the attachment template 1. The positioning groove 13 is a positioning through-hole that matches the shape and size of the positioning portion 22. The protruding structure of the positioning portion 22 can partially pass through the positioning through-hole and be snapped together during installation. Such a structural design is simple and the clinical operation is convenient and flexible. During the use of the attachment installation system, first apply resin evenly in the tooth attachment cavity 31 and the gingival attachment cavity 32 in the first attachment cavity 3. Then, fix the separator 2 on the attachment template 1 through the positioning portion 22 and the positioning groove 13. Subsequently, wear the attachment template 1 and the separator 2 together on the tooth, and bond the attachment to the tooth surface through light curing. When the attachment installation system is detached from the tooth after the attachment is light-cured, since the formed attachment is stuck between the separator 2 and the extension portion 12, it is difficult to remove the separator 2 and the attachment template 1 from the tooth without being damaged. The detachable structure between the positioning portion 22 and the positioning groove 13 solves this problem well. After the attachment is formed, the positioning portion 22 and the positioning groove 13 can be separated first, and then the attachment template 1 and the separator 2 can be removed respectively. In some embodiments, the material of the separator is softer than the material of the attachment template so that the separator fits the covered gingival surface after being worn. Specifically, the separator and the attachment template can be made of any one or a combination of materials such as PETG, PC, or TPU. Moreover, the material of the separator is softer than the material of the attachment template. However, under the same material properties, the separator can be thinner than the attachment template, or the hardness of the material of the separator is less than the hardness of the material of the attachment template. The advantage of this design is that when using the thermoforming process to manufacture the separator and the attachment template, a model with only the crown structure can be used, and there is no need to use a model with a real gingival model. Through the use of materials, the separator can fit the gingiva after being worn, and the fit between the separator and the gingival surface can also improve the consistency between the designed attachment position and the actual pasting position, thereby improving the accuracy of attachment pasting.

[0050] Reference Figure 12 As shown and Figure 13 As shown, an embodiment of the present application also provides an attachment, including a fixing portion 210 for fixing to the surface of the tooth crown and an extension portion 220 connected to the fixing portion 210. When the fixing portion 210 is attached to the surface of the tooth crown, at least part of the extension portion 220 corresponds to the gingival area of the tooth where the fixing portion 210 is located, and the surface of the extension portion 220 adjacent to the gingival area does not contact the gingival area, thereby avoiding the situation of compressing the gingiva when using such an attachment.

[0051] In some embodiments, in order to further improve the tooth movement effect, when the fixing portion 210 is attached to the surface of the tooth crown, in the gingivomolar direction, the free end 221 of the extension portion 220 is set corresponding to the center of resistance P of the tooth root of the tooth where the fixing portion 210 is located, or the free end 221 of the extension portion 220 is set to exceed the center of resistance P of the tooth root of the tooth where the fixing portion 210 is located. Specifically, refer to Figure 13 as shown in Figure 13 which is a schematic cross-sectional view along the sagittal plane when the attachment is pasted on the surface of the central incisor. The free end 221 of the extension portion 220 is set to exceed the center of resistance P of the tooth root of the tooth where the fixing portion 210 is located, that is, the straight line B corresponding to the free end of the extension portion 220 exceeds the straight line P corresponding to the center of resistance in the gingivomolar direction. The advantage of such a design is that it can not only increase the area of the acting surface that interacts with the shell-shaped orthodontic appliance on the extension portion, but also extend the acting surface of the shell-shaped tooth orthodontic appliance and the attachment from the tooth crown area to the gingival area, and the acting point of the acting force is closer to the center of resistance of the tooth, so that the force applied to the tooth is more accurate and the orthodontic effect is improved.

[0052] It should be noted that, without contradiction, the above embodiments can be freely combined as needed to form different new implementation schemes. The implementation schemes formed after such combination are all within the protection scope of the present invention. For the sake of saving the space of the application text, they will not be elaborated here.

[0053] The above are only the preferred implementation modes of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as within the protection scope of the present invention.

[0054] Similarly, the above are only the specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art in this technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An accessory mounting system, characterized in that, It includes an attachment template and a separator. The attachment template includes a first tooth receiving cavity for receiving at least a part of the patient's teeth, an extension formed by extending from the gingival end of the first tooth receiving cavity towards the gingiva, and a first attachment cavity. The first attachment cavity includes a tooth attachment cavity provided in the first tooth receiving cavity and a gingival attachment cavity provided in the extension. The tooth attachment cavity and the gingival attachment cavity are connected. When worn, at least a part of the separator is located between the gingival attachment cavity and the gingiva so that the attachment formed through the first attachment cavity does not contact the gingiva.

2. The accessory mounting system according to claim 1, wherein The separator includes a separator body and a positioning part for fixing the separator body. The positioning part can be fixed on the tooth or the attachment template.

3. The accessory mounting system according to claim 2, wherein When the positioning part is fixed on the tooth, one end of the positioning part is connected to the separator, and the other end forms a hooking structure; the hooking structure can be hooked on other teeth of the dental arch wrapped by the first tooth receiving cavity except the tooth wrapped by the first tooth receiving cavity.

4. The accessory mounting system according to claim 2, wherein When the positioning part is fixed on the tooth, the positioning part is a second tooth receiving cavity for receiving the tooth. The first tooth receiving cavity and the second tooth receiving cavity receive the teeth on the same jaw and the corresponding received teeth do not overlap.

5. The accessory mounting system according to claim 4, characterized in that, The geometric shape of the first tooth receiving cavity and the geometric shape of the second tooth receiving cavity match the shape of a dental arch under the patient's current tooth layout.

6. The accessory mounting system according to claim 4, characterized in that, The second tooth receiving cavity includes sub-second tooth receiving cavities located on both sides of the first tooth receiving cavity. The adjacent sub-second tooth receiving cavities are connected by a connecting part. The connecting part is located in the labial / buccal and / or lingual gingival area. The part of the connecting part corresponding to the gingival attachment cavity forms the separator body.

7. The accessory mounting system according to claim 6, characterized in that, When the connecting part is located in the labial / buccal and lingual gingival areas, the adjacent sub-second tooth receiving cavities and the connecting part enclose a hollow space. When worn, the teeth corresponding to the hollow space at least include the teeth wrapped by the first tooth receiving cavity.

8. The accessory mounting system according to claim 4, wherein, A second attachment cavity is provided on the second tooth receiving cavity.

9. The accessory mounting system according to claim 2, wherein When the positioning part is positioned on the attachment template, the positioning part and a positioning groove provided on the extension are detachably connected.

10. The accessory mounting system according to claim 9, wherein The positioning groove and the positioning part are in a snap fit with concave-convex matching.

11. The accessory mounting system according to any one of claims 1-10, characterized in that, The material of the separator is softer than the material of the attachment template so that the separator fits the covered gingival surface after being worn.

12. An accessory, characterized in that, It includes a fixing part for fixing to the surface of the tooth crown and an extension part connected to the fixing part. When the fixing part is attached to the surface of the tooth crown, at least a part of the extension part corresponds to the gingival area of the tooth where the fixing part is located, and the surface of the extension part adjacent to the gingival area does not contact the gingival area.

13. The accessory according to claim 12, characterized in that, When the fixing part is attached to the surface of the tooth crown, in the gingivo-occlusal direction, the free end of the extension part is set corresponding to the resistance center of the tooth root of the tooth where the fixing part is located, or the free end of the extension part exceeds the resistance center of the tooth root of the tooth where the fixing part is located.

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