Implant abutment for absorbing external shock and manufacturing method thereof

Abstract

The present invention relates to a technology relating to an abutment for an implant, and more particularly, to an abutment for an implant that absorbs external impact and prevents a fixture, abutment, and / or abutment screw from being broken due to repeated biting force by integrally coating the outer surface of the abutment with an elastic body through a coating solution spray and hardening process during the manufacturing process of the abutment for an implant made of titanium (Ti), and a manufacturing method thereof.

Description

[Technical field]

[0001] The present invention relates to a technology relating to an abutment for an implant, and more particularly, to an abutment for an implant that absorbs external impact and prevents a fixture, abutment, and / or abutment screw from being broken due to repeated biting force by integrally coating the outer surface of the abutment with an elastic body through a coating solution spray and hardening process during the manufacture of the abutment for an implant made of titanium (Ti), and a method for manufacturing the abutment. [Background technology]

[0002] An implant basically comprises a fixture that is implanted into the alveolar bone, an abutment that is fixed to the fixture and supports lateral or horizontal pressure in response to the biting force applied during chewing, and a crown (artificial tooth) that covers the top of the abutment to restore the aesthetic beauty of a natural tooth.

[0003] Generally, a crown is made in an optimized shape and size according to the shape and size of the abutment, and then attached to the top of the abutment using adhesives. Crowns are usually made of hard materials to knead food and drink well during chewing. For example, dental metal or dental gold is cast as a material for a crown, or a zirconium oxide block is machined through CAD / CAM to make a crown.

[0004] However, conventional implant structures do not have components that can absorb occlusal forces like the periodontal ligament of natural teeth. Therefore, when occlusal forces are repeatedly applied to the crown, the fixture, abutment, and / or abutment screw, which are the substructures of the crown, may be subjected to repeated strong occlusal forces and may break. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Korean Patent 10-2304199B1, 2021.09.14. [Patent Document 2] Korean Patent 10-2304797B1, 2021.09.15. [Patent Document 3] Korean Patent 10-2132353B1, 2020.07.03. [Patent Document 4] Korean Patent 10-1924802B1, 2018.11.28. Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, an object of the present invention is to provide an implant abutment that absorbs external impacts and prevents the fixture, abutment and / or abutment screw, which are the substructures of the crown, from being fractured due to repetitive biting forces, and a method for manufacturing the same.

[0007] Another object of the present invention is to provide an abutment for an implant, and a manufacturing method thereof, which can stably supply an abutment integrated with an elastic body by spraying a coating solution onto the outer surface of the abutment during manufacturing of the abutment and then curing the solution to form an elastic coating.

[0008] Furthermore, the present invention is not limited to the above-mentioned objects, and various other objects may be additionally provided through the techniques described in the following embodiments and claims. [Means for solving the problem]

[0009] In one embodiment to achieve the above object, the present invention provides an abutment for an implant that absorbs external shock, comprising: an abutment body that is fastened and fixed to a fixture implanted in an alveolar bone; and an elastic body that is integrally coated on an outer surface of the abutment body that comes into contact with an inner surface of the crown to absorb shock applied to the crown due to repetitive biting forces.

[0010] In addition, the abutment body may be made of a metal material, and the elastic body may be formed by spraying a coating solution onto an outer surface of the abutment body and then curing the coating solution, the coating solution being any one selected from a liquid synthetic resin material, a liquid synthetic rubber material, a liquid silicone material, or a liquid silicone rubber material, and the elastic body may be formed to a thickness of 20 μm to 300 μm.

[0011] The abutment cap may further include an abutment cap that enters through an opening formed in the crown and is screwed to the abutment body to fasten the crown to the abutment body, the abutment cap including a threaded protrusion that is screwed to a threaded groove formed in the abutment body, and a head portion formed on an upper portion of the threaded protrusion and having a driver groove formed therein, and an elastic material may be additionally coated integrally on the side and upper portions or the lower, side and upper portions of the head portion excluding the threaded protrusion and the driver groove, taking into consideration a contact portion that directly contacts the crown depending on a structure of the abutment cap.

[0012] In addition, the outer surfaces of the abutment body and the abutment cap may be surface-treated or may be formed with irregularities in order to increase the bonding strength between the abutment body and the elastic body, and then the elastic body may be coated thereon.

[0013] In addition, the crown has a space formed on the inner side thereof in which the elastic body is accommodated, so that the crown can absorb external shocks.

[0014] In another embodiment to achieve the above object, the present invention provides a method for manufacturing an abutment for an implant that absorbs external shock, including the steps of: forming an abutment body to be fastened to a fixture implanted in an alveolar bone; and forming an elastic coating integrally on an outer surface of the abutment body that comes into contact with an inner surface of the crown to absorb shock applied to the crown due to repetitive biting force.

[0015] In addition, the abutment body is made of a metal material, and in the process of forming the elastic body, a coating solution is sprayed onto an outer surface of the abutment body to coat an elastic body base, and then the elastic body base is hardened to form the elastic body. The coating solution is any one selected from a liquid synthetic resin material, a liquid synthetic rubber material, a liquid silicone material, and a liquid silicone rubber material, and the elastic body may be formed to a thickness of 20 μm to 300 μm.

[0016] In addition, the crown is fastened to the abutment body by an abutment cap which enters through an opening formed in the crown and is screwed to the abutment body, and the abutment cap includes a threaded protrusion which is screwed to a threaded groove formed in the abutment body, and a head portion which is formed on an upper portion of the threaded protrusion and has a driver groove formed on the upper portion. Depending on the structure of the abutment cap, and taking into consideration a contact portion which directly contacts the crown, an elastic material may be additionally coated integrally on the side and upper portion of the head portion or the lower, side and upper portion of the head portion excluding the threaded protrusion and the driver groove.

[0017] In addition, the outer surfaces of the abutment body and the abutment cap may be surface-treated or may have irregularities to increase the bonding strength with the elastic body.

[0018] In addition, the crown has a space formed on the inner side thereof in which the elastic body is accommodated, so that the crown can absorb external shocks. Effect of the Invention

[0019] As described above, according to the implant abutment that absorbs external impact and the manufacturing method thereof of the present invention, by forming an elastic body integrally with the abutment body that comes into contact with the crown when the abutment is manufactured, it is possible to prevent implant structures such as the fixture, abutment and / or abutment screw from fracture due to repeated biting forces.

[0020] In addition, according to the abutment for an implant that absorbs external impact and the manufacturing method thereof according to the present invention, a coating solution is sprayed onto the outer surface of the abutment body that comes into contact with the crown, and then the coating solution is hardened to form an elastic body, making it easy to manufacture an abutment with an integrated elastic body.

[0021] Furthermore, according to the implant abutment that absorbs external impact and the manufacturing method thereof according to the present invention, when the abutment is manufactured, the elastic body is integrally formed with the abutment body and then supplied. This means that there is no need to connect the elastic body separately to the abutment body during implant surgery, making the implant surgery simpler and more convenient for the surgeon. [Brief description of the drawings]

[0022] [Figure 1] 1 is a flowchart showing a method for manufacturing an implant abutment according to an embodiment of the present invention. [Diagram 2] 2 is a flowchart showing a method of forming the elastic body shown in FIG. 1. [Diagram 3] 3A to 3C are cross-sectional views each illustrating a process of the manufacturing method illustrated in FIGS. 1 and 2. [Figure 4] 3A to 3C are cross-sectional views each illustrating a process of the manufacturing method illustrated in FIGS. 1 and 2. [Diagram 5] 3A to 3C are cross-sectional views each illustrating a process of the manufacturing method illustrated in FIGS. 1 and 2. [Figure 6]3A to 3C are cross-sectional views each illustrating a process of the manufacturing method illustrated in FIGS. 1 and 2. [Figure 7] 10A to 10C are cross-sectional views illustrating a method for manufacturing an implant abutment according to another embodiment of the present invention. [Figure 8] 10A to 10C are cross-sectional views illustrating a method for manufacturing an implant abutment according to another embodiment of the present invention. [Figure 9] 11 is a schematic diagram illustrating a method for manufacturing an implant according to yet another embodiment of the present invention; [Figure 10] 11 is a schematic diagram illustrating a method for manufacturing an implant according to still another embodiment of the present invention; [Figure 11] 11 is a schematic diagram illustrating a method for manufacturing an implant according to yet another embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] The advantages and features of the present invention and the methods of achieving them will become clearer with reference to the following embodiments described in detail with the accompanying drawings. In addition, the same reference numerals refer to the same components throughout the specification. In addition, the size and shape of each component illustrated in each drawing may be exaggerated for the convenience of explanation and are not intended to be limiting. In addition, when it is described as "A and / or B", it may mean both A and B, or it may mean either A or B.

[0024] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0025] FIG. 1 is a flowchart showing a method for manufacturing an implant abutment in accordance with an embodiment of the present invention, FIG. 2 is a flowchart showing a method for forming the elastic body shown in FIG. 1, and FIGS. 3 to 6 are cross-sectional views that roughly show the steps of the manufacturing method shown in FIGS. 1 and 2.

[0026] 1 and 3, an abutment body 1 is manufactured (S1). At this time, the abutment body 1 may be made of, for example, titanium (Ti), and its shape and size are not limited to the structure shown in FIG. 3, but may be formed to have various shapes and sizes.

[0027] In FIG. 3, the abutment body 1 is formed in a two-piece structure in which the abutment screw (5, see FIG. 9) is independently separated, but this is only one example, and the present invention does not exclude a one-piece structure in which the abutment screw is integrally formed.

[0028] Subsequently, as shown in Figs. 1 and 4, an elastic body 2 is formed by coating on the outer surface of the abutment body 1 (S2).

[0029] The outer surface of the abutment body 1 may be surface-treated before coating with the elastic body 2. The surface treatment may be performed by sandblasting or the like to increase the surface roughness of the abutment body 1 or to form irregularities on the outer surface, thereby increasing the bonding strength of the elastic body 2.

[0030] The elastic body 2 is formed by coating in the following manner.

[0031] As shown in Figs. 2, 5 and 6, a coating solution is sprayed onto the outer surface of the abutment body 1 to coat the elastic body base 2a, and then the elastic body base 2a is hardened to form the elastic body 2 as a coating.

[0032] The elastic base 2a is coated on the outer surface of the abutment body 1 that comes into contact with the crown.

[0033] The coating solution may be made of a material that has excellent bonding strength with the abutment body 1 made of a metal material such as titanium. Also, a material that has elasticity and can be coated on the outer surface of the abutment body 1 by a sprayer or a spray nozzle may be used. For example, any one selected from a liquid synthetic resin material, a liquid synthetic rubber material, a liquid silicone material, or a liquid silicone rubber material may be used.

[0034] The elastic body 2 is formed by spraying a coating solution onto the outer surface of the abutment body 1 using a spray nozzle, coating it, and then curing it. At this time, the elastic body 2 can be formed to a thickness of 20μm to 300μm, taking into consideration that the movement of natural teeth due to biting force is an average of 30μm.

[0035] FIG. 7 is a cross-sectional view showing an outline of a method for manufacturing an abutment for an implant according to another embodiment of the present invention, illustrating a process of forming an elastic body integrally with an abutment cap having a tapered shape and a process of connecting and fixing the elastic body to an abutment body.

[0036] Referring to Figure 7, in an abutment structure in which a crown is fixed to an abutment body 1 by an abutment cap 3, the crown needs to come into contact not only with the abutment body 1 but also with the abutment cap 3 to provide a buffer between the abutment cap 3 and the crown.

[0037] In other words, as shown in Figures 5 and 6, when the crown is directly bonded to the abutment body 1 using adhesive without using the abutment cap 3, the coating solution can be sprayed only on the outer surface of the abutment body 1 that contacts the crown to coat the elastic base 2a.

[0038] However, in a structure in which the crown is fixed to the abutment body 1 by the abutment cap 3 as shown in FIG. 7, when the abutment cap 3 is manufactured separately from the abutment body 1, an elastic body 2' can be formed on its outer surface through a coating solution spraying and hardening process.

[0039] 7, the abutment cap 3 includes a thread groove portion 3a that is screwed into the thread groove portion 1a of the abutment body 1, and a head portion 3b that is formed on the upper portion of the thread groove portion 3a and has a driver groove 3c formed at the upper portion with a predetermined depth to which a driver tool is connected. The head portion 3b is formed to be wider than the thread groove portion 3a, and protrudes from the upper portion of the abutment body 1 with the thread groove portion 3a being connected to the thread groove portion 1a of the abutment body 1.

[0040] The outer surface of the abutment cap 3 on which the elastic body 2' is coated may be surface-treated in the same manner as the abutment body 1. The elastic body 2' is formed tightly on the outer surface of the abutment cap 3 through a coating solution spraying and hardening process. At this time, the location where the elastic body 2' is formed may be changed depending on the structure of the head of the abutment cap 3. This is because when the structure of the head of the abutment cap 3 is changed, the location that comes into contact with the crown 6 also changes. Therefore, it may be formed in various locations depending on the structure of the head.

[0041] As shown in Figure 7, when the side of the abutment cap 3 has a tapered (inclined) structure, the tapered side directly contacts the crown 6, so that the elastic body 2' is formed on the side of the head portion 3b and on the upper portion that contacts the resin filled in the opening 6b of the crown 6.

[0042] FIG. 8 is a cross-sectional view showing an outline of a method for manufacturing an abutment for an implant according to another embodiment of the present invention, illustrating the process of connecting and fixing a “T”-shaped abutment cap having an elastic body integrally formed therewith to an abutment body.

[0043] As shown in Figure 8, when the abutment cap 3' has an approximately "T" shaped structure, when the abutment cap 3' is bonded and fixed to the abutment body 1 and then the crown 6 is placed over it, the lower, side and upper parts (crown resin part) of the head portion 3b' come into direct contact with the crown 6.

[0044] Therefore, in the abutment cap 3' structure having a "T" shape, the elastic body 2'' is formed on the lower part, sides and upper part of the head part 3b' excluding the screw groove part 3a' and the driver groove 3c'.

[0045] When connected to the abutment body 1, the sides or the lower and sides of the head portions 3b, 3b' come into contact with the inner surface of the crown (6, see FIG. 10), and the upper portions of the head portions 3b, 3b' come into contact with the resin (not shown) filled in the opening 6b formed in the crown 6. Therefore, by forming elastic bodies 2', 2" in all parts of the head portion 3b that come into contact with the crown 6, it is possible to stably absorb impacts applied to the crown 6 due to repeated biting forces.

[0046] In this way, in the method for manufacturing an abutment for an implant according to an embodiment of the present invention, when the abutment body 1 and the abutment caps 3, 3' are manufactured in a manufacturing factory, the elastic bodies 2, 2', 2" are coated on the outer surfaces together, and the elastic bodies 2, 2', 2" are supplied as a single integrated product.

[0047] 9 to 11 are diagrams that briefly show a method for producing an implant according to still another embodiment of the present invention.

[0048] 9 and 10, the abutment body 1 is fastened to the fixture 4 implanted in the alveolar bone (S2). At this time, the abutment body 1 may be fastened through an abutment screw 5.

[0049] In FIG. 9, as an example, the abutment body 1 is fastened to the fixture 4 by an abutment screw 5, but in the case of a one-piece structure in which the abutment screw is integrally formed with the abutment, the abutment may be fastened directly to the fixture.

[0050] Next, a crown 6, which is an artificial tooth, is fabricated to cover the abutment, as shown in Fig. 10. At this time, a space 6a in which the elastic body 2 is to be formed is formed in advance on the inner side of the crown 6, taking into consideration the shape and size of the elastic body 2 formed integrally with the abutment body 1 when the crown 6 is fabricated.

[0051] Of course, when the abutment cap 3 is applied, a space is provided in which the elastic body 2 formed on the abutment body 1 and the elastic body 2' formed on the abutment cap 3 are formed.

[0052] In a conventional implant structure in which the elastic bodies 2, 2' are not installed, the inner region of the crown may be expanded to the space 6a and the shaded area 'A' as shown in Fig. 10(a). However, in the embodiment, taking into consideration the elastic bodies 2, 2' installed between the crown 6 and the abutment body 1, the inner region may have an area reduced by the space 6a and the shaded area 'A'.

[0053] The space 6a and the shaded area 'A', which are areas that are reduced compared to conventional implants with the same abutment structure, can be changed depending on the shape and size of the elastic bodies 2, 2'. The space 6a has a shape that corresponds to the shape of the elastic bodies 2, 2', and in this case, the depth d of the space 6a can be formed to be the same as or slightly smaller than the thickness t of the elastic bodies 2, 2'.

[0054] Next, as shown in (a) of Figure 11, the crown 6 is positioned on the abutment body 1 formed integrally with the elastic body 2, and then, as shown in (b) and (c) of Figure 11, the crown 6 can be fastened and fixed using the abutment cap 3.

[0055] Subsequently, the opening 6b of the crown 6 is filled with resin or the like later to complete the artificial tooth.

[0056] As described above, the technical ideas of the present invention have been specifically described in the embodiments, but they are not limited to the embodiments and may be embodied in various different forms. These are provided to fully inform those skilled in the art of the invention of the scope of the invention, and the present invention is defined by the scope of the claims. [Explanation of symbols]

[0057] 1 Abutment body 1a Thread groove 2 Elastic body twenty two' 2a Elastic base 3 Abutment cap 3a Thread groove 3b Head section 3c Driver groove 4 Fixtures 5 Abutment screw 6 crowns 6a Space 6b opening

Claims

1. An abutment body that is fastened to a fixture that is implanted in the alveolar bone; and an elastic body formed as an integral coating on an outer surface of the abutment body that contacts an inner surface of the crown in order to absorb shock applied to the crown by repetitive biting force; The crown has a space formed on its inner surface for accommodating the elastic body.

2. The abutment body is made of a metal material, The elastic body is formed by spraying a coating solution on the outer surface of the abutment body and then curing the solution. The coating solution is any one selected from the group consisting of a liquid synthetic resin material, a liquid synthetic rubber material, a liquid silicone material, and a liquid silicone rubber material, 2. The abutment for an implant capable of absorbing external shock according to claim 1, wherein the elastic body is formed to a thickness of 20 μm to 300 μm.

3. an abutment cap that is inserted through an opening formed in the crown and screwed to the abutment body to fasten the crown to the abutment body, the abutment cap includes a screw protrusion that is screwed into a screw groove formed in the abutment body, and a head portion that is formed on an upper portion of the screw protrusion and has a driver groove formed therein; 2. The abutment for an implant that absorbs external shocks as described in claim 1, wherein an elastic material is integrally coated on the sides and top of the head portion or the bottom, sides and top of the head portion excluding the screw protrusion and the driver groove, taking into consideration the contact area that directly contacts the crown depending on the structure of the abutment cap.

4. 4. The abutment for an implant that absorbs external impacts as claimed in claim 3, wherein outer surfaces of the abutment body and the abutment cap are surface-treated or have irregularities formed thereon in order to increase a bonding strength with the elastic body, and then the elastic body is coated thereon.

5. forming an abutment body that is fastened to a fixture that is implanted in the alveolar bone; and forming an elastic coating integrally on the outer surface of the abutment body that contacts the inner surface of the crown in order to absorb shocks applied to the crown by repetitive biting forces; The method for manufacturing an abutment for an implant that absorbs external shock, wherein the crown has a space formed on an inner surface thereof for accommodating the elastic body.

6. The abutment body is made of a metal material, In the process of forming the elastic body, a coating solution is sprayed onto the outer surface of the abutment body to coat an elastic body base, and the elastic body base is hardened to form the elastic body. The coating solution is any one selected from the group consisting of a liquid synthetic resin material, a liquid synthetic rubber material, a liquid silicone material, and a liquid silicone rubber material, The method for manufacturing an abutment for an implant capable of absorbing external shock according to claim 5, wherein the elastic body is formed to a thickness of 20 μm to 300 μm.

7. The crown is fastened to the abutment body by an abutment cap that is inserted through an opening formed in the crown and screwed to the abutment body, the abutment cap includes a screw protrusion that is screwed into a screw groove formed in the abutment body, and a head portion that is formed on an upper portion of the screw protrusion and has a driver groove formed thereon, 6. A method for manufacturing an abutment for an implant that absorbs external impact as described in claim 5, wherein an elastic body is additionally coated integrally on the sides and top of the head portion or the bottom, sides and top of the head portion excluding the screw protrusion and the driver groove, taking into consideration the contact area that directly contacts the crown depending on the structure of the abutment cap.

8. The method for manufacturing an abutment for an implant capable of absorbing external shock according to claim 7, wherein outer surfaces of the abutment body and the abutment cap are surface-treated or have irregularities formed thereon to increase a bonding strength between the abutment body and the elastic body.

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