Dental instrument

Abstract

The utility model discloses a dental instrument. The dental instrument comprises a shell-shaped appliance with a mounting area, a functional accessory mounted outside the mounting area and an adhesive layer for combining the mounting area with a mounting surface of the functional accessory, and the mounting area is of a structure with a concave part and a convex part. And the peripheral edge of the mounting area protrudes outwards from the tooth accommodating cavity of the shell-shaped appliance. Thus, on one hand, the contact area of the adhesive layer and the mounting area can be increased, the total amount of the adhesive layer between the mounting area and the functional accessory is increased, and then the bonding strength of the functional accessory is improved; on the other hand, the rigidity of the mounting area can be improved, the bending deformation resistance of the mounting area is improved, the mounting reliability of the functional parts on the mounting area is guaranteed, and the functional parts are not prone to failure and falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of tooth correction, in particular to a dental instrument. Background Art

[0002] Malocclusion is one of the three major oral diseases with a high prevalence. Currently, patients mainly correct malocclusion through surgery or by wearing orthodontic appliances. Compared with traditional orthodontic technology, invisible shell orthodontic appliances are transparent, beautiful, and comfortable, and are gradually favored by more and more young patients.

[0003] In order to enhance the correction effect, many functional accessories are usually combined with the shell-shaped appliance, such as traction buckles, brackets, jaw pads, bimaxillary plates, flat guides, interface tubes, etc. However, in the prior art, the installation reliability of the functional accessories on the shell-shaped appliance is reduced and they are easy to fall off. In particular, when these functional accessories are combined with the shell-shaped appliance by bonding, the reliability and strength of the bonding are very low, and it is very easy for the bonding to fail and the functional accessories to fall off. Summary of the invention

[0004] In order to solve the installation failure problem mentioned in the background technology, the purpose of the utility model is a dental instrument.

[0005] To achieve the above-mentioned purpose of the utility model, one embodiment provides a dental instrument. The dental instrument includes a shell-shaped appliance having an installation area, a functional accessory installed outside the installation area, and an adhesive layer that combines the installation area with the installation surface of the functional accessory, wherein the installation area is configured to have a structure with a concave portion and a convex portion, and the edges around the installation area protrude outward from the tooth receiving cavity of the shell-shaped appliance.

[0006] As a further improvement of one embodiment, the thickness of the adhesive layer at the concave portion is greater than the thickness of the adhesive layer at the convex portion.

[0007] As a further improvement of one embodiment, the shape of the protrusion is any one of a multi-circle ring shape, a cross shape, and a grid shape.

[0008] As a further improvement of one embodiment, the multiple rings include two or more circular rings, elliptical rings, and waist-shaped rings.

[0009] As a further improvement of an implementation manner, the width of any one of the multiple rings is constant, and the widths of any two rings are the same and the distance between them is constant.

[0010] As a further improvement of one embodiment, the recess includes a central recess surrounded by the innermost circle of the multiple rings, and the mounting surface of the functional accessory is at least engaged with the innermost circle of the multiple rings.

[0011] As a further improvement of one embodiment, the grid shape includes any one or more combinations of a cross grid shape and a cross grid shape.

[0012] As a further improvement of one embodiment, the recess includes at least one closed recess completely surrounded by the protrusion, and the mounting surface of the functional accessory is at least engaged with the protrusions around the closed recess.

[0013] As a further improvement of one embodiment, the maximum height of the protrusion is constant along the extension direction of the shape of the protrusion.

[0014] As a further improvement of one embodiment, the recess is configured as a plane.

[0015] As a further improvement of one embodiment, the maximum height of the convex portion is not less than two or three times the maximum height of the concave portion.

[0016] As a further improvement of one embodiment, the inner side of the convex portion has a cavity connected to the tooth receiving cavity of the shell-shaped orthodontic appliance.

[0017] As a further improvement of one embodiment, the edges around the installation area protrude outward from the tooth receiving cavity of the shell-shaped orthodontic appliance, and the concave portion and the convex portion are both away from the tooth receiving cavity.

[0018] As a further improvement of an implementation manner, the size of the installation surface of the functional accessory is smaller than the size of the installation area, and the edges around the installation area are exposed outside the installation surface of the functional accessory.

[0019] As a further improvement of an embodiment, the shell-shaped appliance is configured such that the structure of the installation area and the rest of the shell-shaped appliance are integrally molded.

[0020] Compared with the prior art, the beneficial effects of the utility model include: by extending the edges of the installation area outward and setting the installation area to a structure with recesses and protrusions, on the one hand, the contact area between the adhesive layer and the installation area can be enhanced, and the total amount of the adhesive layer between the installation area and the functional accessories can be increased, thereby improving the bonding strength of the functional accessories; on the other hand, through the concave and convex installation area structure, the rigidity of the installation area can be improved, and the ability of the installation area to resist bending deformation can be increased, thereby ensuring the installation reliability of the functional accessories on the installation area and preventing them from failing and falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a dental apparatus and a dentition according to an embodiment of the present utility model;

[0022] Figure 2It is a schematic structural diagram of a shell-shaped appliance according to an embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the joint structure of the functional accessory and the mounting area of ​​the shell-shaped appliance in one embodiment of the utility model;

[0024] Figure 4 It is a schematic diagram of the exploded structure of the functional accessories and the installation area of ​​the shell-shaped appliance of one embodiment of the utility model;

[0025] Figure 5 is a cross-sectional view of a functional accessory of an embodiment of the utility model in a state of engagement with the mounting area of ​​a shell-shaped appliance, the cross section being taken along Figure 4 The plane where the dashed line is located;

[0026] Figure 6 is a cross-sectional view of the installation area of ​​a shell-shaped appliance according to an embodiment of the present invention, the cross section is taken along Figure 4 The plane where the dashed line is located;

[0027] Figure 7 It is a structural schematic diagram of the installation area of ​​a shell-shaped orthodontic appliance according to another embodiment of the present invention;

[0028] Figure 8 is a cross-sectional view of the installation area of ​​a shell-shaped appliance according to another embodiment of the present invention, the cross section is taken along Figure 7 The longitudinal section of the middle dashed line;

[0029] Fig. 9 It is a structural schematic diagram of the installation area of ​​a shell-shaped orthodontic appliance according to another embodiment of the utility model;

[0030] Fig.10 is a cross-sectional view of the installation area of ​​a shell-shaped orthodontic appliance according to another embodiment of the present invention, the cross section is taken along Fig. 9 Longitudinal section of the middle dashed line;

[0031] Fig.11 It is a structural schematic diagram of the installation area of ​​a shell-shaped orthodontic appliance according to another embodiment of the utility model;

[0032] Fig.12 is a cross-sectional view of the installation area of ​​a shell-shaped appliance according to another embodiment of the present invention, the cross section is taken along Fig.11 Longitudinal section of the middle dashed line. DETAILED DESCRIPTION

[0033] The following will describe the implementation of the present invention in detail in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0034] The inventors have found that during clinical use, the functional accessories of shell-like appliances often fail to be installed and fall off, that is, the installation reliability is reduced. In particular, when these functional accessories are combined with the shell-like appliance by bonding, the poor reliability and strength of the bonding will cause the functional accessories to fall off.

[0035] Based on this discovery, the utility model provides a dental instrument to overcome the problem of functional accessories failing to bond and easily falling off as mentioned above, and to improve the clinical reliability and strength of bonding.

[0036] Ginseng Figure 1 An embodiment of the present invention provides a dental device 100. The dental device 100 includes a shell-shaped appliance 10, a functional accessory 20 and an adhesive layer.

[0037] The shell-shaped appliance 10 is used to be worn on one or more teeth, and includes an inner surface facing the teeth and an outer surface away from the teeth. The inner surface is surrounded by a tooth accommodating cavity, which is used to accommodate a whole row of teeth or part of the teeth. Figure 1 The example in the figure is a whole row of teeth 200. The present invention is described by taking the tooth accommodating cavity of the shell-shaped orthodontic appliance 10 accommodating a whole row of teeth 200 as an example, and other situations in which only a part of the teeth can be accommodated are not drawn.

[0038] Specifically, the shell-shaped appliance 10 is a transparent and colorless invisible appliance made of plastic material, which is usually designed to correspond to a treatment step of the entire treatment plan, so as to change the target dentition from the initial layout of the corresponding treatment step to the target layout of the corresponding treatment step. The shell-shaped appliance 10 can be made of any material and any method known in the art, including but not limited to being made of polymer material by a hot pressing film molding process.

[0039] Ginseng Figure 2 The functional accessory 20 is installed outside the installation area 11 of the shell-shaped appliance 10 to enhance the correction effect of the shell-shaped appliance 10 or to add correction functions to the shell-shaped appliance 10 .

[0040] Specifically, the functional accessory 20 can be configured as any one of a traction buckle, a bracket, a jaw pad, a double jaw plate, a flat guide plate, an interface tube, etc., but is not limited thereto. The utility model mainly uses the traction buckle shown in the figure as an example for explanation, and other types of functional accessories are not expanded one by one.

[0041] The adhesive layer is located between the mounting area 11 and the mounting surface 21 of the functional accessory 20 (see reference numerals). Figure 5 ) and is used to combine the installation area 11 with the installation surface 21 of the functional accessory 20. That is, the inner side of the adhesive layer is bonded to the installation area 11, and the outer side is bonded to the installation surface 21 of the functional accessory 20, so that the functional accessory 20 is installed outside the installation area 11.

[0042] Generally, the installation area 11 of the shell-shaped appliance 10 is basically a relatively flat plane, or a concave or convex surface with a small curvature, for the functional accessory 20 to be installed thereon. However, as mentioned above, the inventors have found that this structure has the defects of low installation strength of the functional accessory and easy installation failure.

[0043] To overcome this defect, in the present invention, Figures 3 to 6 ,or Figures 7-8 ,or Figures 9-10 ,or Figures 11-12 In various embodiments, the edges 11c of the mounting area 11 of the shell-shaped orthodontic appliance 10 protrude outward from the tooth receiving cavity, and the mounting area 11 is configured to have a structure with a concave portion 11a and a convex portion 11b. In this way, on the one hand, the contact area between the adhesive layer and the mounting area 11 can be increased, and the total amount of the adhesive layer between the mounting area 11 and the functional accessory 20 can be increased, thereby improving the bonding strength of the functional accessory 20; on the other hand, the rigidity of the mounting area 11 can be improved, and the ability of the mounting area 11 to resist bending deformation can be increased, thereby ensuring the reliability of the installation of the functional accessory 20 on the mounting area 11 and preventing it from failing and falling off.

[0044] Specifically, in one embodiment, the adhesive layer can be formed by curing an adhesive, preferably a food-grade, medical-grade or biocompatible adhesive, which is environmentally friendly and suitable for devices placed in the oral cavity. Thus, by setting the mounting area 11 as a concave-convex structure, the adhesive can be stored in the concave portion 11b before curing, thereby improving the bonding strength and reliability.

[0045] The relative directions of the functional accessory 20 and the mounting area 11 (eg Figure 5 The thickness of the adhesive layer is defined by the vertical direction of the concave portion 11b, and the thickness of the adhesive layer at the concave portion 11b is greater than the thickness of the adhesive layer at the convex portion 11a. For example, the adhesive layer substantially fills the space 112 between the concave portion 11b and the mounting surface 21 of the functional accessory 20, and the thickness of the adhesive layer at the concave portion 11b is approximately the depth of the concave portion 11b relative to the apex 111 of the convex portion 11a.

[0046] Furthermore, the shell-shaped appliance 10 is configured as follows: the structure of the installation area 11 (i.e., the concave-convex structure formed by the concave portion 11b and the convex portion 11a) and the rest of the shell-shaped appliance 10 are integrally molded, that is, the installation area 11 and the rest of the shell-shaped appliance 10 are integrally configured, for example, a single-layer or multi-layer diaphragm is integrally molded by hot pressing technology.

[0047] Ginseng Figure 6 The convex portion 11a of the mounting area 11 protrudes away from the tooth receiving cavity of the shell-shaped orthodontic appliance 10, and has a cavity 1101 on its inner side that is connected to the tooth receiving cavity.

[0048] In other words, when the shell-shaped appliance 10 is worn on the entire row of teeth 200, the inner sides of the concave portion 11b and the convex portion 11a are both away from the surface P1 of the tooth 201 corresponding to the installation area 11, and the installation area 11 as a whole does not contact the surface P1.

[0049] Further, in one embodiment, the recess 11 b is configured as a plane.

[0050] In the installation area 11, the portion protruding out of the plane where the recess 11b is located in the direction away from the tooth receiving cavity is the convex portion 11a.

[0051] The relative directions of the functional accessory 20 and the mounting area 11 (eg Figure 5 The height of the installation area 11 is defined by the distance away from the tooth accommodating cavity in the up and down directions, wherein the relative direction of the functional accessory 20 and the installation area 11 can be considered as the normal direction of the surface P1 in the wearing state.

[0052] The maximum height of the protrusion 11a remains constant along the extension direction of the shape of the protrusion 11a, that is, at any two positions along the extension direction of the shape of the protrusion 11a, the maximum height of the protrusion 11a is the same, so that the full engagement between the protrusion 11a and the mounting surface 21 of the functional accessory 20 can be fully guaranteed.

[0053] Preferably, the maximum height of the convex portion 11 a is not less than twice the maximum height of the concave portion 11 b , and even not less than three times the maximum height of the concave portion 11 b .

[0054] Furthermore, the size of the mounting surface 21 of the functional accessory 20 (i.e., the span along the tooth surface) is actually relatively small, which is smaller than or even much smaller than the size of the mounting area 11 (i.e., the span along the tooth surface), so that the edges 11c around the mounting area 11 are exposed outside the mounting surface 21 of the functional accessory 20 and are not covered by the functional accessory 20. In this way, the same mounting area 11 can be used as a standard platform for the functional accessory 20 to be installed, so as to realize the functional accessories 20 of different sizes according to actual needs, or to slightly adjust the mounting point of the same functional accessory 20 according to needs, which greatly ensures the stability of the process and improves the compatibility.

[0055] Furthermore, there are many different ways to realize the cross-sectional configuration and shape extension of the protrusion 11a, for example: Figures 3 to 6 , Figures 7-8 , Figures 9-10 , Figures 11-12 Each embodiment of the present invention provides different cross-sectional configurations and / or different extension directions of the protrusion 11a. This will be described below.

[0056] First, regarding the cross-sectional configuration of the convex portion 11 a .

[0057] Ginseng Figures 3 to 6 Embodiments of Figures 7-8 In the embodiment, the cross-sectional configuration of the protrusion 11a is an outwardly convex curved shape, and the vertex 111 thereof defines the maximum height of the protrusion 11a.

[0058] exist Figures 9-10 Embodiments and Figures 11-12 In the embodiment of FIG. 1 , the cross-sectional configuration of the protrusion 11 a is a plane, and the plane defines the maximum height of the protrusion 11 a.

[0059] Of course, the cross-sectional configuration of the convex portion 11 a of the present invention is not limited thereto.

[0060] Next, the shape of the projection 11 a will be described.

[0061] Ginseng Figures 3 to 6 Embodiments of Figures 7-8 In the embodiment, the shape of the protrusion 11a is set to be a multi-circle ring in the extension direction. In this way, the anti-deformation ability of the installation area 11 in all directions can be further increased, and the installation reliability and strength of the functional accessory 20 can be ensured.

[0062] Specifically, refer to Figures 3 to 6 In the embodiment, the mounting area 11 is circular, and the shape of the protrusion 11a is set to be a plurality of rings extending in the direction, and the example in the figure is 2 rings; Figures 7-8 In the embodiment, the mounting area 11 is waist-shaped, and the shape of the protrusion 11a is set to be a multi-circle waist-shaped ring extending in the direction, and the example in the figure is 2 circles; of course, the specific form of the multi-circle ring is not limited to Figures 3 to 6 Examples and Figures 7-8 In other embodiments, the mounting area 11 is elliptical, and the protrusion 11a can also be set to be a multi-circle elliptical ring in the extension direction. That is, the multi-circle ring can be any of a multi-circle circular ring, a multi-circle waist ring, a multi-circle elliptical ring or other rings.

[0063] Furthermore, the width W of any one of the multiple rings is constant, and the widths W of any two rings are the same. Furthermore, the distance between any two rings is constant, for example Figure 6 The distance W1 between the innermost circle and the second inner circle is indicated in FIG. , and the W1 is constant; Figure 8 The distance W1 between the innermost circle and the second inner circle is also indicated in FIG. 1 , and the distance W1 is constant. In this way, the installation reliability and strength of the functional accessory 20 can be enhanced.

[0064] The recess 11b includes a central recess surrounded by the innermost circle of the multi-circle ring, and the mounting surface 21 of the functional accessory 20 is at least engaged with the innermost circle of the multi-circle ring. That is, the mounting surface 21 of the functional accessory 20 at least covers the innermost circle of the multi-circle ring. Figures 4 to 6 For example, the mounting surface 21 is circular, which is coaxially engaged with the mounting area 11 and covers the portion of the mounting area 11 on the inner side of the vertex 111 of the second inner circle of the multi-circle ring (including the central recess, the innermost circle of the multi-circle ring, the recess between the innermost circle and the second inner circle, and a portion of the second inner circle of the multi-circle ring).

[0065] Furthermore, Figures 9-10 In the embodiment provided in the embodiment, the installation area 11 is circular, the shape of the protrusion 11a is set to be cross-shaped, and the concave portion 11b is formed at the four corners separated by the cross-shaped protrusion 11a and is roughly in the shape of a right angle sector. In this way, by setting the cross-shaped protrusion 11a, as in the previous multi-ring ring, the anti-deformation ability of the installation area 11 in all directions can be further increased, ensuring the installation reliability and strength of the functional accessory 20.

[0066] exist Figures 9-10 In the embodiment, the mounting area 11 is circular, and correspondingly, the mounting surface 21 of the functional accessory 20 may also be circular, which is coaxially engaged with the mounting area 11 and covers at least part of the convex portion 11a and at least part of the concave portion 11b.

[0067] Re-attend Figures 11-12 In the embodiment provided in the embodiment, the installation area 11 is circular, and the shape of the protrusion 11a is set to be grid-shaped in the extension direction. In this way, like the previous multi-ring shape and cross shape, the anti-deformation ability of the installation area 11 in all directions can be further increased to ensure the installation reliability and strength of the functional accessory 20, and its anti-deformation ability and installation reliability are better than Figures 9-10 The cross-shaped convex portion 11a provided in.

[0068] More specifically, the grid shape includes any one or more combinations of a cross grid shape and a cross grid shape. Fig.11 As shown, it is arranged in a cross grid shape; for example, in other embodiments, the grid shape is arranged in a cross grid shape; for example, the grid shape is arranged in a combination of a cross grid shape and a cross grid shape.

[0069] Preferably, Figures 11-12 , the recess 11b includes at least one closed recess completely surrounded by the protrusion 11a, for example Fig.11The concave portion indicated by 11b-1 is a closed concave portion; the circular mounting surface 21 of the functional accessory 20 is coaxially engaged with the mounting area 11 and at least engaged with the convex portions 11a around the closed concave portion, thereby further enhancing the mounting reliability.

[0070] The above is based on Figures 3 to 6 , Figures 7-8 , Figures 9-10 , Figures 11-12 In the various embodiments, some examples are given to introduce the shape and extension direction of the convex portion 11a of the utility model, but it can be understood that the shape and extension direction of the convex portion 11a of the utility model is not limited to this.

[0071] in addition, Figures 3 to 6 , Figures 7-8 , Figures 9-10 , Figures 11-12 The cross-sectional configuration and shape extension direction of the convex portion 11a of each embodiment can be freely combined, for example Figures 3 to 6 The cross-sectional configuration (i.e., convex curve) and Figures 9-10 The shape extension direction (i.e., cross shape) is combined to form a new embodiment, and these free combinations do not deviate from the technical purpose of the utility model.

[0072] Furthermore, preferably, the shapes of the mounting surface 21 of the functional accessory 20 and the mounting area 11 are preferably set to be consistent, for example, if the mounting area 11 is circular, the mounting surface 21 is also circular; of course, the shapes of the two can also be set to be different. Such changes also do not deviate from the technical purpose of the utility model.

[0073] In summary, compared with the prior art, the utility model has the following beneficial effects: the mounting area 11 of the shell-shaped orthodontic appliance 10 is configured as a structure having a recessed portion 11a and a convex portion 11b, and the edges of the mounting area 11 are convexly extended outward. Thus, on the one hand, the contact area between the adhesive layer and the mounting area 11 can be enhanced, and the total amount of the adhesive layer between the mounting area 11 and the functional accessory 20 can be increased, thereby improving the bonding strength of the functional accessory 20; on the other hand, the rigidity of the mounting area 11 can be improved, and the ability of the mounting area 11 to resist bending deformation can be increased, thereby ensuring the installation reliability of the functional accessory 20 on the mounting area 11 and preventing it from failing and falling off.

[0074] It should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0075] The detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A dental device, comprising a shell-shaped appliance having a mounting area, a functional accessory mounted outside the mounting area, and an adhesive layer combining the mounting area with the mounting surface of the functional accessory, characterized in that: The installation area is configured to have a structure with a concave portion and a convex portion, and the edges around the installation area protrude outward from the tooth receiving cavity of the shell-shaped orthodontic appliance.

2. The dental apparatus according to claim 1, characterized in that The thickness of the adhesive layer at the concave portion is greater than the thickness of the adhesive layer at the convex portion.

3. The dental apparatus according to claim 1, wherein: The shape of the protrusion is any one of a multi-ring shape, a cross shape, and a grid shape.

4. The dental apparatus according to claim 3, characterized in that The multi-ring shape includes any one of two or more circular rings, elliptical rings, and waist-shaped rings.

5. The dental apparatus according to claim 4, characterized in that: The width of any one of the multiple rings is constant, and the widths of any two rings are the same and the distance between them is constant.

6. The dental apparatus according to claim 4, characterized in that: The recess includes a central recess surrounded by the innermost circle of the multiple rings, and the mounting surface of the functional accessory is at least engaged with the innermost circle of the multiple rings.

7. The dental apparatus according to claim 3, characterized in that: The grid shape includes any one or more combinations of a cross grid shape and a cross grid shape.

8. The dental apparatus according to claim 7, characterized in that The recessed portion includes at least one closed recessed portion completely surrounded by the raised portion, and the mounting surface of the functional accessory is at least engaged with the raised portions around the closed recessed portion.

9. The dental apparatus according to claim 1, wherein: The maximum height of the projection is constant over the extension of the shape of the projection.

10. The dental apparatus according to claim 9, characterized in that The recessed portion is configured as a plane.

11. The dental apparatus according to claim 9, characterized in that The maximum height of the convex portion is not less than two or three times the maximum height of the concave portion.

12. The dental apparatus according to claim 1, wherein: The inner side of the convex portion has a cavity communicated with the tooth receiving cavity of the shell-shaped orthodontic appliance.

13. The dental apparatus according to claim 12, characterized in that The concave portion and the convex portion are both away from the tooth receiving cavity.

14. The dental apparatus according to claim 1, wherein: The size of the installation surface of the functional accessory is smaller than the size of the installation area, and the edges around the installation area are exposed outside the installation surface of the functional accessory.

15. The dental apparatus according to claim 1, wherein: The shell-shaped appliance is configured such that the structure of the installation area and the rest of the shell-shaped appliance are integrally molded.

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