Accessory template

Abstract

The accessory template comprises a shell-shaped body and an isolation part, the shell-shaped body is provided with a plurality of tooth containing cavities for containing teeth of a patient, the isolation part is arranged on the inner surface of the shell-shaped body, the gingival end of each tooth containing cavity extends towards the gingival direction to form an extension part, and the shell-shaped body is provided with an accessory cavity which has a preset shape and can be used for forming an accessory. The accessory cavity comprises a tooth accessory cavity arranged in the tooth accommodating cavity and a gingival accessory cavity arranged in the extension part, the tooth accessory cavity is communicated with the gingival accessory cavity, and the accessory is isolated in the accessory cavity by the isolation part. After the shell-shaped body is worn on the dentition, the surface of the side, close to the gingiva, of the isolation part and the gingiva at the corresponding position are arranged at intervals, and contact is not generated.

Description

Technical Field

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

[0002] A shell-shaped appliance is a continuous tooth correction device that corrects malformed teeth by continuously moving them within a decreasing range. When in use, most shell-shaped appliances cooperate with attachments pasted on the teeth to improve the retention force of the shell-shaped appliance on the teeth. In the prior art, in order to set the attachments at the predetermined positions on the teeth, corresponding attachment templates are first prepared. Accommodation grooves matching the shapes of the attachments are formed on the attachment templates, and clinicians inject photocuring resin into the accommodation grooves. During the actual operation process, clinicians need to perform acid etching treatment on the tooth surfaces where the attachments are added, apply an adhesive at the corresponding positions, then put the attachment template filled with photocuring resin over the treated dental arch, and finally irradiate with ultraviolet light to cure the resin and paste it onto the teeth to complete the production of the attachments. However, all the above processes require manual operation by clinicians. When injecting the photocuring resin into the accommodation grooves, the injection amount of the photocuring resin in this process is uncontrollable, which will bring errors in the production of the attachments. If the resin filling amount is less, air bubbles or depressions will be generated in the preset accommodation grooves, resulting in the shape of the finally prepared attachment not conforming to the designed shape. When used in cooperation with an invisible orthodontic device, the designed movement expectation cannot be achieved. If the resin filling amount is more, the resin will overflow from the accommodation grooves. Especially for the attachments whose own length needs to extend to the gingiva, if too much resin is filled, not only will the resin stick to the gingiva during the photocuring process, but also the actual size of the attachment added after photocuring will be larger than the pre-designed size, which will squeeze and compress the gingiva at the gingiva position, not only reducing the comfort of the patient wearing it, but also affecting the correction result.

[0003] Therefore, in order to make the position and size of the bonded attachments more accurate, more matching with the invisible orthodontic device, obtain a better correction effect, make the patient more comfortable during the correction process, and improve the correction efficiency, there is an urgent need to design a standardized addition device for the attachments extending to the gingiva. Summary of the Utility Model

[0004] The purpose of the embodiments of the present application is to provide a new attachment template that can accurately install the attachments extending to the gingiva.

[0005] To achieve the above object, an embodiment of the present application provides an attachment template, which includes a shell-shaped body having a plurality of tooth receiving cavities for accommodating a patient's teeth and a separating portion provided on the inner surface of the shell-shaped body. An extension portion is formed by extending the gingival end of the tooth receiving cavity towards the gingiva. An attachment cavity with a predetermined shape for forming an attachment is provided on the shell-shaped body. The attachment cavity includes a tooth attachment cavity provided in the tooth receiving cavity and a gingiva attachment cavity provided in the extension portion. The tooth attachment cavity and the gingiva attachment cavity are connected and arranged. The separating portion isolates the attachment within the attachment cavity.

[0006] Preferably, an injection hole for injecting resin into the interior of the attachment cavity is provided on the attachment cavity.

[0007] Preferably, the separating portion includes a receiving portion and an adhesive portion. A part of the surface of the receiving portion is fixedly bonded to the adhesive portion. After the adhesive portion is bonded to the attachment, the receiving portion can be removed from the adhesive portion.

[0008] Preferably, the adhesive portion is located on the side of the receiving portion adjacent to the attachment cavity and is arranged corresponding to the area where the tooth attachment cavity is located.

[0009] Preferably, a positioning portion is provided on the separating portion, and the positioning portion is detachably connected to a positioning groove provided on the shell-shaped body.

[0010] Preferably, the positioning groove and the positioning portion are in a snap-fit with concave-convex matching.

[0011] Preferably, after the shell-shaped body is worn on the dentition, the surface of the separating portion adjacent to the gingiva is spaced from the gingiva at the corresponding position.

[0012] Preferably, an acid-etching portion is provided on the surface of the separating portion adjacent to the tooth, and an acid-etching agent is provided at the position corresponding to the tooth crown of the tooth.

[0013] Preferably, an isolation layer is provided on the side of the acid-etching portion adjacent to the tooth, and the isolation layer can be removed from the acid-etching portion.

[0014] Preferably, the attachment is an attachment to be cured.

[0015] An accessory template provided by the present utility model realizes the standardized installation of large accessories exceeding the crown part on teeth. The accessory template includes an accessory cavity and a separation part. Among them, the accessory cavity includes a tooth accessory cavity and a gum accessory cavity for forming accessories exceeding the crown part. The function of the separation part is to isolate the accessory in the accessory cavity during the installation process of the accessory, avoiding the contact between the fluid resin and the gum, so as to prevent adhesion to the gum. Moreover, since the separation part itself has a certain thickness, the part of the gum corresponding to the accessory will not contact the gum during the process of cooperating with the shell-shaped orthodontic appliance after the accessory is cured, thus avoiding the extrusion of this type of accessory to the gum during use. Description of the Drawings

[0016] 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 are represented as similar elements. Unless otherwise stated, the drawings in the figures do not constitute a proportional limitation.

[0017] Figure 1 It is a schematic diagram of an accessory formed by an accessory template pasted on a tooth in some embodiments of the present application;

[0018] Figure 2 It is a schematic structural diagram of an accessory template in some embodiments of the present application;

[0019] Figure 3 It is a schematic structural diagram of an accessory template in some other embodiments of the present application;

[0020] Figure 4 Is Figure 3 A cross-sectional view of the accessory template along A-A in [the relevant embodiment];

[0021] Figure 5 It is a cross-sectional view of the accessory template in the labiolingual direction in some other embodiments of the present application;

[0022] Figure 6 It is a cross-sectional view of the accessory template in the labiolingual direction in some other embodiments of the present application;

[0023] Figure 7 It is a cross-sectional view of the accessory template in the labiolingual direction in some other embodiments of the present application;

[0024] Figure 8 It is a schematic structural diagram of an accessory template in some other embodiments of the present application;

[0025] Figure 9 It is a cross-sectional view of the positioning part and the positioning groove in some embodiments of the present application;

[0026] Figure 10It is a schematic cross-sectional view of the positioning part and the positioning groove in some other embodiments of the present application;

[0027] Figure 11 It is a schematic structural view of an attachment template in some other embodiments of the present application;

[0028] Figure 12 It is a schematic structural view of an attachment template in some other embodiments of the present application;

[0029] Figure 13 It is a schematic structural view of an attachment template in some other embodiments of the present application; Detailed implementation manners

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will elaborate on the various implementation manners of the present application with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that in the various implementation manners of the present application, many technical details are provided to help readers 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 embodiments is for convenience of description and should not constitute any limitation on the specific implementation manners of the present application. The various embodiments can be combined and cross-referenced with each other on the premise of not being contradictory.

[0031] The "posterior tooth area" mentioned in each embodiment of the present application is defined according to the classification of teeth on pages 36-38 of the second edition of "Introduction to Stomatology" published by Peking University Medical Press, including premolars and molars, the teeth marked as 4-8 in the FDI notation, and the teeth marked as 1-3 in the FDI notation in the anterior tooth area. The teeth in the anterior tooth area include central incisors, lateral incisors, and canines. In addition, for the teeth in the deciduous tooth stage, the "posterior tooth area" is defined according to the classification of deciduous teeth on pages 40-41 of the second edition of "Introduction to Stomatology" published by Peking University Medical Press, including three categories: deciduous incisors, deciduous canines, and deciduous molars. Among them, deciduous incisors include deciduous central incisors and deciduous lateral incisors, and deciduous molars include the first deciduous molar and the second deciduous molar.

[0032] 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 are the surfaces of the dental crown of the anterior teeth close to the lips, which is called the labial surface, and the surface of the dental crown of the posterior teeth close to the cheek is called the buccal surface. The lingual surface is the general term for the surfaces of the dental crowns of the anterior and posterior teeth close to the tongue. The mesial surface and the distal surface are the two surfaces of the dental crown adjacent to adjacent teeth, collectively called the adjacent surfaces. The surface closer to the midline of the face is called the mesial surface, and the surface farther from the midline of the face is called the distal surface.

[0033] This document describes the installation of large attachments on teeth that exceed the crown portion. 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 crown surface of the 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, this application provides an installation template for large attachments that exceed the crown portion of teeth. Refer to Figure 1 As shown in, the attachment 200 pasted on the tooth 100 that exceeds the tooth crown and extends towards the gingiva 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 main problem to be solved by the attachment template in this application is to accurately paste such attachments on the tooth surface without contacting the gingiva during the installation process.

[0034] The attachment template in this application includes a shell-shaped body having a plurality of tooth receiving cavities for accommodating the patient's teeth and a separating portion provided on the inner surface of the shell-shaped body. The gingival end of the tooth receiving cavity extends towards the gingiva to form an extension portion. The shell-shaped body is provided with an attachment cavity having a predetermined shape for forming an attachment. The attachment cavity includes a tooth attachment cavity provided in the tooth receiving cavity and a gingival attachment cavity provided in the extension portion. The tooth attachment cavity and the gingival attachment cavity are connected and arranged. The separating portion isolates the attachment within the attachment cavity. After the shell-shaped body is worn on the dental arch, the surface of the separating portion adjacent to the gingiva is spaced from the gingiva at the corresponding position and does not come into contact.

[0035] The following describes each embodiment in this application with reference to the accompanying drawings.

[0036] To achieve the above object, refer to Figures 2 to 4 As shown in, an embodiment of this application provides an attachment template including a shell-shaped body 1 having a plurality of tooth receiving cavities 11 for accommodating the patient's teeth and a separating portion 14 provided on the inner surface of the shell-shaped body 1. The gingival end of the tooth receiving cavity 11 extends towards the gingiva to form an extension portion 12. Refer to Figure 3 As shown in, the shell-shaped body 1 here can wrap the entire dental arch. Refer to Figure 2 As shown in, it can also wrap a part of the dental arch. The extension portion 12 extends from a part of the tooth receiving cavity 11 towards the gingiva. The shell-shaped body 1 is provided with an attachment cavity 13 for forming an attachment according to a predetermined shape. The attachment cavity 13 includes a tooth attachment cavity 131 provided in the tooth receiving cavity 11 and a gingival attachment cavity 132 provided in the extension portion 12. The tooth attachment cavity 131 and the gingival attachment cavity 132 are connected and arranged. The extension portion 12 extends at least from the tooth receiving cavity 11 where the tooth attachment cavity 131 is located towards the gingiva. The separating portion 14 is located at the opening of the attachment cavity 13 and closes the opening of the attachment cavity 13.

[0037] The accessory within the accessory cavity 13 can be a prefabricated accessory or an accessory to be cured. Refer to Figure 5 As shown, when the accessory 2 is a prefabricated accessory, that is, a solid resin accessory 2 pre-manufactured by the manufacturer, it is placed in the accessory cavity 13 in advance, and then the isolation part 14 seals the opening of the accessory cavity 13. This prefabricated accessory can be directly pasted on the patient's teeth without additional ultraviolet light irradiation for curing and forming; when the accessory is an accessory to be cured, it can be an uncured semi-fluid resin material. In this case, refer to Figure 6 As shown, the semi-fluid resin material is filled into the accessory cavity 13 through the injection hole 133 on the accessory cavity 13. At this time, the shape of the accessory cavity 13 is the same as the predetermined accessory shape on the tooth during tooth correction, so that the accessory to be cured can fill the entire accessory cavity 13. When the clinician performs on-site light curing, it can be consistent with the digital accessory added in the tooth correction plan design, so that the accessory added to the tooth has a higher matching degree when used in conjunction with the subsequent worn invisible orthodontic device. Thus, it reduces the doctor's manual operation of filling the accessory to be cured, that is, the uncured resin material, so that the cured accessory is consistent with the accessory designed for orthodontics.

[0038] Further explanation, continue to refer to Figure 5 and Figure 7As shown, when the accessory is a prefabricated accessory, the accessory can be used as a part of the accessory template, and the accessory template can be manufactured in batches as a whole, saving the doctor's time for on-site production and use during the process of injecting semi-fluid resin into the shell-like body 1, thereby improving efficiency. In this case, the isolation portion 14 includes a receiving portion 141 and a bonding portion 142, and the receiving portion 141 isolates the bonding portion 142 and the accessory in the accessory cavity 13. The bearing portion 141 is sealed at the opening edge of the accessory cavity 13, and the bonding portion 142 is located on the side of the receiving portion 141 adjacent to the accessory cavity 13. The bonding portion 142 is enclosed inside the accessory cavity 13, thereby isolating it from contact with external contaminants. Part of the surface of the receiving portion 141 is bonded and fixed to the bonding portion 142. After the bonding portion 142 is bonded to the accessory, the receiving portion 141 can be removed from the bonding portion 142. In one case, the edge of the receiving portion 141 is fixed to the inner side of the shell-like body 1 by an easily removable adhesive, the receiving portion 141 is a film that meets the oral hygiene standards, and the adhesive portion 142 is an adhesive located between the film and the accessory. When the accessory is bonded, the adhesive portion 142 and the accessory are in a bonded state, and the receiving portion 141 is first removed from the shell-like body 1, and the adhesive portion 142 is separated from the receiving portion 141. When the shell-like body 1 is worn on the dentition, the accessory is bonded to the tooth surface through the adhesive portion 142. Since the accessory formed by the accessory template in the present application partially corresponds to the tooth area and partially corresponds to the gum area during use, and the part corresponding to the tooth area needs to be bonded to the tooth surface, and the part corresponding to the gum area needs to maintain a gap with the gum, therefore, the adhesive portion 142 is arranged corresponding to the area where the tooth accessory cavity 131 is located, so that the accessory part inside the tooth accessory cavity 131 can be bonded to the tooth surface as completely as possible during the bonding process, so that the bonding area is sufficient.

[0039] In other embodiments, when the edge of the isolation part is fixed to the inner side of the shell-like body by an easily removable adhesive, when the isolation part is removed from the shell-like body, adhesive will remain on the shell-like body, and when the shell-like body is worn on the teeth, the adhesive is easy to stick to the surface of the teeth. In view of the above problem, the isolation part and the shell-like body can be set to be detachably connected, specifically, the isolation part is provided with a positioning part and the positioning groove on the shell-like body is detachably connected. The positioning groove and the positioning part are in a concave-convex matching snap fit.

[0040] Specifically, refer to Figure 8 and Figure 9As shown, the positioning groove 15 is formed by the inner surface of the shell-shaped body 1 protruding away from the teeth. The positioning groove 15 and the positioning portion 16 on the isolation portion 14 are in a snap-fit with concave-convex matching. The positioning portion 16 is formed by the body of the isolation portion 14 protruding towards the shell-shaped body 1, and the positioning groove 15 is a groove structure matching the shape and size of the positioning portion 16. Such a structural design is simple and the clinical operation is convenient and flexible. During the use of the attachment template, after the attachment is formed in the attachment cavity 13, the isolation portion 14 can be separated from the shell-shaped body 1 by first separating the positioning portion 16 and the positioning groove 15, and then when the shell-shaped body 1 is worn on the dentition, the attachment is adhered to the tooth surface through the adhesion portion.

[0041] In some other embodiments, with reference to Figure 10 As shown, the positioning groove 15 and the positioning portion are in a snap-fit. The positioning portion 16 is formed by the body of the isolation portion 14 protruding towards the attachment template direction, and the positioning groove is a positioning through-hole matching the shape and size of the positioning portion. Specifically, the positioning through-hole is provided on the two tooth receiving cavities on both sides of the tooth receiving cavity where the attachment cavity is located. The protruding structure of the positioning portion can be partially inserted through the positioning through-hole and snapped together during installation. Such a structural design is simple and the clinical operation is convenient and flexible.

[0042] When the isolation portion 14 and the shell-shaped body 1 are in a detachable connection structure, the isolation portion 14 needs to have a certain hardness so that the formed positioning portion 16 and the positioning groove 15 on the shell-shaped body 1 are detachable. However, in order to satisfy that the isolation portion 14 can be easily removed from the shell-shaped body 1 and facilitate the clinical operation, the material of the isolation portion 14 needs to be softer than the material of the attachment template. Specifically, the isolation portion 14 and the attachment template can adopt any one or a combination of materials such as PETG, PC or TPU. And, the material of the isolation portion 14 is softer than the material of the attachment template, but under the same material properties, the isolation portion 14 is thinner than the attachment template, or the hardness of the material of the isolation portion 14 is less than the hardness of the material of the attachment template.

[0043] In some embodiments, the thickness of the receiving portion 141 itself is between 5 mm and 20 mm. Such a thickness design can make the attachment formed through the attachment cavity 13 not contact the gingiva and maintain a certain distance, thereby avoiding squeezing the gingiva during the use of such attachments and causing problems such as gingival inflammation and atrophy. And, according to the physiological structure characteristics in the oral cavity, the thickness of the receiving portion 141 itself being between 5 mm and 20 mm can also ensure the comfort of the attachment template in the oral cavity.

[0044] In other embodiments, after the shell-shaped body 1 is worn on the dentition, the surface of the receiving portion 141 adjacent to the gum side is spaced from the gum at the corresponding position. In this case, the thickness of the receiving portion 141 itself can be smaller, and the sum of the distance between the surface of the receiving portion 141 adjacent to the gum side and the gum at the corresponding position and the thickness of the receiving portion 141 being between 5 mm and 20 mm can also ensure that the attachments formed through the attachment cavity 13 do not contact the gum and maintain a certain distance, thereby avoiding squeezing the gum by such attachments during use and causing problems such as gum inflammation and atrophy.

[0045] In some embodiments, as shown in Figure 11 Before bonding the attachment to the tooth, the tooth surface needs to be etched. Etching can clean the surface of the tooth enamel, expose the fresh layer of the local enamel, and thus make the attachment bond more firmly during the subsequent process of pasting the attachment. Therefore, an etching portion 17 is provided at a position corresponding to the bonding portion 142 on the surface of the isolation portion 14 adjacent to the tooth. The etching portion 17 is an etchant at a position corresponding to the tooth crown. Or the etching portion 17 is an etching film permeable to the etchant, which can adsorb the corresponding etchant. The etching film can be a porous film or a sustained-release film, and the etching film is directly attached to the surface of the isolation portion 14 adjacent to the tooth. The etchant can be 30%-37% phosphoric acid or other etchants that can be used in the mouth, and is applied to the surface of the isolation portion 14.

[0046] In some other embodiments, as shown in Figure 12 An isolation layer 18 is provided on the side of the etching portion 17 adjacent to the tooth, and the isolation layer 18 can be removed from the etching portion 17. There is an adhesive between the isolation layer 18 and the etching portion 17 and the isolation layer 18 can be easily torn off from the etching portion 17, wherein the etchant and the adhesive do not blend with each other. The advantage of such a design is that the isolation layer 18 is located outside the etching portion 17 to seal the etchant and prevent the etchant from being contaminated. During use, first remove the isolation layer 18, then sleeve the shell-shaped body 1 on the tooth to complete the etching of the tooth surface. After the etching is completed, remove the shell-shaped body 1 from the dentition and then further remove the isolation layer 18, and then sleeve the shell-shaped body 1 on the dentition again to complete the pasting of the attachment. Or, in other embodiments, the isolation layer 18 is a sealed isolation package sleeved on the entire attachment template to prevent the etching layer from being contaminated.

[0047] In some embodiments, as shown in Figure 13 The other tooth receiving cavities 11 of the shell-shaped body 1 can also be used for pasting other attachments on the teeth, such as oval attachments, rectangular attachments or triangular formations commonly used in invisible orthodontics. The practicability of the attachment template is increased, and the pasting of the attachments required on the dentition can be completed in one step.

[0048] It should be noted that, without contradiction, the above embodiments can be freely combined as needed to form different new implementation schemes, and the implementation schemes formed after such combination are all within the protection scope of the present utility model. To save the space of the application text, they will not be elaborated here.

[0049] The above are only the preferred implementation modes of the present utility model. 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 utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as within the protection scope of the present utility model.

[0050] Similarly, the above are only the specific implementation modes of the present utility model, but the protection scope of the present utility model 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 utility model, and all should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. An attachment template, characterized in that: The invention comprises a shell-like body having a plurality of tooth receiving cavities for accommodating the patient's teeth and an isolating portion arranged on the inner surface of the shell-like body, the gingival end of the tooth receiving cavity extends toward the gingival side to form an extension portion, the shell-like body is provided with an accessory cavity having a predetermined shape and can be used to form an accessory, the accessory cavity comprises a tooth accessory cavity arranged in the tooth receiving cavity and a gingival accessory cavity arranged in the extension portion, the tooth accessory cavity and the gingival accessory cavity are connected, and the isolating portion isolates the accessory in the accessory cavity.

2. The attachment template according to claim 1, characterized in that: The accessory cavity is provided with an injection hole for injecting resin into the accessory cavity.

3. The attachment template according to claim 2, characterized in that: The isolation part includes a receiving part and an adhesive part. A part of the surface of the receiving part is adhesively fixed to the adhesive part. After the adhesive part is adhesively bonded to the attachment, the receiving part can be removed from the adhesive part.

4. The attachment template according to claim 3, characterized in that: The bonding portion is located at a side of the receiving portion adjacent to the attachment cavity and is arranged corresponding to the area where the tooth attachment cavity is located.

5. The attachment template according to claim 1, characterized in that: The isolating portion is provided with a positioning portion, and the positioning portion is detachably connected to a positioning groove provided on the shell-shaped body.

6. The attachment template according to claim 5, characterized in that: The positioning groove and the positioning portion are in a concave-convex matching snap-fit ​​fit.

7. The attachment template according to claim 3, characterized in that: After the shell-like body is worn on the teeth, the surface of the isolating portion adjacent to the gums is arranged at a distance from the gums at the corresponding position.

8. The attachment template according to claim 1, characterized in that: An acid etching portion is arranged on a surface of one side of the isolation portion adjacent to the tooth, and an acid etching agent is arranged at a position of the acid etching portion corresponding to the crown of the tooth.

9. The attachment template according to claim 8, characterized in that: An isolation layer is provided on a side of the acid-etched portion adjacent to the tooth, and the isolation layer can be removed from the acid-etched portion.

10. The attachment template according to any one of claims 1 to 8, characterized in that: The attachment is an attachment to be cured.

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