KR101038068B1 - Abutment for dental implant - Google Patents

Abstract

PURPOSE: An abutment of a dental implant is provided to enhance workability and to prevent discoloration thereof from occurring after a surgical operation. CONSTITUTION: An abutment of a dental implant comprises: a connection support(1210) in which the lower part thereof is inserted into the gum and is combined with a fixture(1100) and the top thereof is projected from the outside; and a connection cover(1220) which adhere closely to and is combined with the top of the connection support in order to cover the top of the connection support. On the top of the connection support, a protrusion is projected in the columnar direction and is formed in a cyclic shape.

Description

Abutment for Dental Implants

The present invention relates to an abutment of a dental implant and a connection support used therein. More particularly, the present invention relates to a titanium alloy to facilitate the coupling with a fixture inserted into the gum and to prevent the tooth from appearing black. Abutments of dental implants incorporating ceramics of zirconia and connection supports used therein.

1 is a structural diagram showing a schematic configuration of a conventional dental implant, Figure 2 is a perspective view showing an abutment formed integrally in a conventional dental implant.

Referring to FIG. 1, a conventional dental implant 100 includes a fixture 110, an abutment 120, and an artificial tooth 130. The fixture 110 is inserted into and fixed to the gum 200, and the abutment 120 is fixed to the fixture 110 by a fastening means 115 such as a screw. Is coupled to. The artificial tooth 130 is generally covered on the upper portion of the abutment 120.

The fixture 110 and the fastening means 115 are formed of a titanium alloy. The abutment 120 may be formed of ceramics made of titanium alloy or zirconia. When the abutment 120 is manufactured of a titanium alloy, the strength is excellent and precise cutting is possible, but since the thickness of the artificial tooth 130 that is applied to the abutment 120 is very thin, a certain amount after the implant procedure As time passes, the metal color may appear to shine outside or appear black. On the other hand, when the abutment 120 is manufactured of ceramics made of zirconia, zirconia maintains white color unlike titanium alloys, so there is no need to worry about the ignition phenomenon. However, in the case of the zirconia material, it is contracted and fired in order to improve the strength, which makes it difficult to precisely process and low temperature degradation may occur when the body is used for a long time. In particular, the abutment 120 and the When the precision is lowered at the site where the fixture 110 is coupled, it is difficult to support the teeth.

Therefore, the development of abutments of dental implants and connection supporting parts used therein is required to maintain strength to support artificial teeth and to be precisely coupled to the fixture and to not discolor or ignite even after a procedure. .

The present invention has been made in view of the above-described problems, maintaining the strength to support the artificial teeth and excellent processability to be precisely coupled to the fixture and at the same time the discoloration or ignition occurs even after the procedure It is an object of the present invention to provide an abutment of a dental implant that does not and a connection support used therefor.

Abutment of the dental implant according to the first embodiment of the present invention, the fixing body 1100 is inserted into the gum fixed; A lower support 1212 is inserted into the gum and coupled to the fixture 1100, and an upper support 1211 protrudes to the outside of the gum; A connection cover 1220 that is tightly coupled to surround the upper part 1211 of the connection support part 1210; An artificial tooth (1300) that is tightly coupled to surround an outer surface of the connection cover (1220); It includes, but the connection support portion 1210 is formed in a hollow cylindrical shape, characterized in that coupled to the fixed body 1100 by a fastening means 1150 penetrating the hollow interior.

In the abutment of the dental implant according to the second embodiment of the present invention, in order to prevent the connection cover 1220 surrounding the upper portion 1211 of the connection support portion 1210 from flowing downward, the connection support portion ( A locking jaw 1213 protruding in the circumferential direction of the 1210 is formed, and the locking jaw 1213 is formed at a position partitioning the upper portion 1211 and the lower portion 1212 of the connection support portion 1210. do.

The abutment of the dental implant according to the third embodiment of the present invention, the connection cover 1220 coupled to the upper portion 1211 of the connection support portion 1210 to the upper portion 1211 of the connection support portion 1210 At least one protrusion 1215 protruding in the circumferential direction and formed in an annular shape is provided for fixing.

In the abutment of the dental implant according to the fourth embodiment of the present invention, the protrusion 1215 has an outer diameter D2 of the lower surface of the protrusion 1215 more than the outer diameter D1 of the upper surface of the protrusion 1215. It is characterized by large.

In the abutment of the dental implant according to the fifth embodiment of the present invention, the outer diameter D of the protrusion 1215 is 1.2 to 1.5 than the outer diameter d of the upper portion 1211 of the connection support 1210. It is characterized by having a pear size.

In the abutment of the dental implant according to the sixth embodiment of the present invention, an adhesive solvent may flow downward when the connection part 1210 and the connection cover 1220 are bonded to the protrusion part 1215. At least one groove 1215-1 is formed so as to be recessed in the vertical direction.

In the abutment of the dental implant according to an embodiment of the present invention, the connection support part 1210 is formed of a titanium alloy material, the connection cover 1220 is characterized in that formed of ceramics of zirconia material.

First, the abutment of the dental implant according to the first embodiment of the present invention dualizes the abutment structure, and the connecting support portion coupled to the fixture inserted into the gum is formed of a titanium alloy material and the artificial teeth are covered. The connecting cover is made of ceramic material of zirconia. Therefore, even after time of implantation, the color of the metal is not projected or the coloration does not occur, it is possible to maintain a white tooth has an aesthetic effect. In addition, the connection support coupled to the fixture is formed of a titanium alloy that is biocompatible, excellent in strength, and easy to process, and the abutment inserted into the gum to support the artificial tooth is firmly fastened to the fixture. There is this.

Second, the abutment of the dental implant according to the second embodiment of the present invention is formed so that the locking jaw protrudes from the connection support of the abutment, so as to surround the outer surface of the connection support by a load applied when chewing food. The combined coupling cover flows downward to prevent the phenomenon of digging or inserting into the gum.

Third, the abutment of the dental implant according to the third embodiment of the present invention is provided with at least one protruding portion formed to protrude in a band shape on the upper portion of the connection support portion that the connection cover is covered, the upper portion of the connection support and the connection cover There is an effect that can keep the combination of firmly. In addition, an adhesive solvent is generally used when the connection support part and the connection cover are coupled. As protrusions are formed on the upper surface of the connection support part, irregularities are formed in the convex part so that the connection support part and the connection cover are tightly connected. It is coupled, the recess (凹 部) has an advantage that can be firmly coupled to the connection support and the connection cover of different materials, as the adhesive solvent penetrates into the spaced gap between the connection support and the connection cover.

Fourth, the abutment of the dental implant according to the fourth embodiment of the present invention has a larger outer diameter (D2) of the lower surface of the protrusion than the outer diameter (D1) of the upper surface of the protrusion formed on the connection support, the upper portion of the connection support The connection cover is easily inserted and fixed, but there is an effect that the connection cover can be firmly maintained so as not to shake by preventing the connection cover from flowing upward.

Fifth, the abutment of the dental implant according to the fifth embodiment of the present invention is such that the outer diameter (D) of the protrusion has a size 1.2 to 1.5 times larger than the outer diameter (d) of the upper portion of the connection support, the adhesive solvent soaks For example, there is an advantage in that the space formed by the protrusions to be cured enough to sufficiently maintain the coupling of the connection support and the connection cover made of different materials.

Sixth, the abutment of the dental implant according to the sixth embodiment of the present invention is formed with at least one groove recessed in the vertical direction along the circumferential portion of the protrusion. When two or more protrusions are formed, when the connection support and the connection cover are tightly coupled by the protrusion located at the top, even if the adhesive solvent is spilled, the adhesive solvent cannot be passed through the protrusion located at the top and the other solvent is located at the bottom. May not seep. Therefore, by forming a groove in the protrusion, the adhesive solvent flows downward to penetrate and cure the adhesive solvent in the recessed portion (위치한 部) located at the lower end, and there is an advantage that the connection support and the connection cover, which are different materials, can be firmly coupled.

1 is a structural diagram showing a schematic configuration of a conventional dental implant.
Figure 2 is a perspective view of the abutment formed integrally in a conventional dental implant.
Figure 3 is a structural diagram showing a schematic configuration of a dental implant according to the present invention.
Figure 4 is an exploded perspective view showing a coupling structure of the dental implant according to the present invention.
5 is a perspective view showing an abutment of Embodiment 1 according to the present invention;
6 is a perspective view showing an abutment of Embodiment 2 according to the present invention;
7 is a perspective view showing an abutment of Embodiment 3 according to the present invention;
8 is a front view showing the abutment of the fourth embodiment according to the present invention;
9 is a front view showing an abutment of example 5 according to the present invention;
10 is a perspective view showing an abutment of Example 6 according to the present invention;

Implant is an artificial tooth that is implanted into the alveolar bone when the tooth is damaged or lost. Implants are widely used because they can be performed only on the parts that are lost without damaging adjacent teeth. They are excellent in the functionality and appearance of the teeth and have the advantages of accurate pronunciation and speed of recovery.

Dental implants are produced by a processing machine and can be customized. Conventionally, the abutment of the implant was custom-made in consideration of the oral environment according to the individual and the position of the teeth. In this case, the chief engineer at the laboratory makes the abutment custom by hand, and is usually manufactured by casting using an alloy. However, there is a disadvantage in that the precision is poor because of the manual work of the chisel construction, there is a problem of high cost due to the consumption of labor costs due to the material cost and a lot of time by using gold (Au) in the abutment.

To overcome this, customized abutments made using CAD and CAM have recently been utilized, and are made of titanium, which is biocompatible and has high strength. Artificial teeth are fixed by attaching the upper part of the abutment formed of titanium, and artificial teeth are manufactured in a color similar to natural teeth. However, since the thickness of the artificial tooth is made of 2 ~ 3 mm, the metal color of the abutment formed of titanium or titanium alloy can be seen. In particular, when a certain time elapses after the implant procedure, the metal color of the abutment is colored or projected, and the teeth appear black, which is a big problem in appearance aesthetics.

To overcome this problem, an abutment formed of ceramics of zirconia was developed. This is because zirconia is biocompatible and maintains a white color. However, it is used to shrink to improve the strength of zirconia to a level similar to that of titanium, and it is more difficult to process than titanium depending on the degree of shrinkage, and it must be precisely combined with the fixture to support the load of artificial teeth. It is difficult to process. Therefore, in the present invention, to invent the abutment of the dental implant having a dual abutment and the connection support used therein to complement the disadvantages of the abutment made of zirconia ceramics and titanium alloy.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a structural diagram showing a schematic configuration of a dental implant according to the present invention, Figure 4 is an exploded perspective view showing a coupling structure of the dental implant according to the present invention, Figure 5 is a first embodiment according to the present invention 6 is a perspective view showing an abutment of Example 2 according to the present invention, FIG. 7 is a perspective view showing an abutment of Example 3 according to the present invention, and FIG. 8 is a present invention. 9 is a front view showing the abutment of the fourth embodiment according to the present invention, FIG. 9 is a front view showing the abutment of the fifth embodiment according to the present invention, and FIG. 10 is a perspective view showing the abutment of the sixth embodiment according to the present invention. to be.

Example 1

3 and 4, the dental implant 1000 according to the first embodiment of the present invention includes a fixture 1100, an abutment 1200, and an artificial tooth 1300. The fixture 1100 is inserted into and fixed to the gum 2000, and the material is generally a titanium alloy. The fixture 1100 is inserted into the alveolar bone of the gum 2000 so as not to flow and serves as a bottom surface of the dental implant 1000. The artificial tooth 1300 is closely coupled to surround the upper outer surface of the abutment 1200, and the material is generally ceramic. The artificial tooth 1300 is formed to be similar to natural teeth, and is generally manufactured to be similar in color to natural teeth. Since the fixture 1100 and the artificial tooth 1300 are the same as the fixture and artificial tooth utilized in a conventional implant, a more detailed description thereof will be omitted.

3 to 5, the abutment 1200 is coupled to the fixture 1100 to serve as a support for supporting a load acting on the artificial tooth 1300 when chewing food. The abutment 1200 may include a connection support part 1210 and a connection cover 1220. The connection support part 1210 is made of a titanium alloy material, the connection cover 1220 is preferably formed of ceramics of zirconia, of course, may be formed of a variety of materials. The connection support part 1210 is formed in a cylindrical shape with a hollow inside, and is coupled to the fixture 1100 by a fastening means 1150 penetrating the hollow inside. The fastening means 1150 is generally a screw, but various fasteners may be utilized. The connection support part 1210 may be divided into an upper part 1211 and a lower part 1212, and the lower part 1212 is inserted into the gum and firmly attached to the fixture 1100 by coupling the fastening means 1150. Is fixed. The upper portion 1211 is a portion protruding to the outside of the gum. The connection cover 1220 is tightly coupled to surround the upper portion of the connection support 1211. The connection cover 1220 and the connection support part 1210 are preferably bonded and bonded by an adhesive solvent, but may be coupled by various fastening methods.

Accordingly, the abutment 1200 of the first embodiment is dualized by the connection support 1210 formed of a titanium alloy and the connection cover 1220 formed of zirconia ceramics, and the upper portion of the connection support exposed to the gum 2000. The connection cover 1220 of ceramic material is blocked so that the metallic color of the 1211 is not projected or colored to the outside. Accordingly, there is an advantage that the conventional aesthetics superior to the abutment consisting of only titanium alloy. In addition, since the lower portion of the connection support 1212 is formed of a titanium alloy, it is firmly fixed when combined with the fixture 1100, thereby supporting the load.

Example 2

3, 4, and 6, the dental implant 1000 according to the second embodiment of the present invention is further provided with a locking jaw 1213 in the abutment 1200 in the first embodiment. to be. Therefore, the following description will focus on the locking step 1213 which is different from the first embodiment. The locking step 1213 may protrude in the circumferential direction of the connection support part 1210, and is to prevent the connection cover 1220 surrounding the connection support part 1211 from flowing downward. Since the abutment 1200 supports a load when chewing food, the connection cover 1220 in close contact with the artificial tooth 1300 flows downward by a load and digs or inserts the gum 2000. It may be, the locking jaw 1213 serves to prevent this. The lower part 1212 of the connection support part 1210 is inserted into the gum 2000 and the upper part of the connection support part 1211 is provided to protrude to the outside of the gum, so that the locking jaw 1213 is the connection support part. It is preferably formed to span the upper surface of the gum 2000, which is a position for partitioning the upper portion 1211 and the lower portion 1212 of the 1210.

Example 3

3, 4, and 7, the dental implant 1000 according to the third embodiment of the present invention is further provided with the protrusion 1215 in the abutment 1200. Therefore, hereinafter, the protrusion 1215 will be described. The protrusion 1215 may be formed in an annular shape so as to protrude along the circumferential circumferential surface of the upper portion of the connection support 1211. The protrusion 1215 is for firmly fixing the connection cover 1220 to the upper portion of the connection support 1211. The protrusion 1215 may be provided with at least one. When the protrusion part 1215 is formed, irregularities are formed on the circumferential surface of the upper portion of the connection support part 1211. Therefore, in the convex part, the upper part of the connection support part 1211 and the connection cover 1220 are tightly coupled to each other, and a recess is formed between the upper part of the connection support part 1211 and the connection cover 1220. As the adhesive solvent penetrates into the spaced spaces, the bonding support 1210 and the connection cover 1220 of different materials are firmly maintained.

Example 4

3, 4, and 8, the dental implant 1000 according to the fourth embodiment of the present invention is provided with a modified form of the protrusion 1215 in the abutment 1200 of the third embodiment. Form. Therefore, hereinafter, the protrusion 1215 which is different from the third embodiment will be described. The protrusion 1215 may be provided along a circumferential surface of the upper portion of the connection support 1211, and may be formed to have a diameter different from an upper surface and a lower surface of the protrusion 1215. Referring to FIG. 8, it can be seen that the diameter of the protrusion 1215 is smaller than the outer diameter D1 of the upper surface than the outer diameter D2 of the lower surface. As such, when the outer diameter of the lower surface is larger than the upper surface of the protrusion 1215 as in the fourth embodiment, the connection cover 1220 is easily inserted when the connection cover 1220 is coupled to the connection cover 1210. 1220) has the effect of maintaining firmly so as not to flow upward or decomposition.

Example 5

3, 4, and 9, the dental implant 1000 according to the fifth embodiment of the present invention is provided such that the protrusion 1215 protrudes at a predetermined ratio from the abutment 1200. Therefore, hereinafter, the difference between the diameters of the protrusions 1215 will be described. The outer diameter D of the protrusion 1215 may be 1.2 to 1.5 times larger than the outer diameter d of the upper portion 1211 of the connection support part 1210. As such, when the diameter size ratio between the outer diameter D of the protrusion 1215 and the outer diameter d of the upper portion 1211 of the connection support part 1210 is maintained, the connection support part 1210 is provided to cover the diameter. The connection cover 1220 may be firmly fixed. In addition, the adhesive performance is improved by forming a space enough to penetrate the adhesive solvent in the spaced space between the connecting support 1210 and the connecting cover 1220.

Example 6

3, 4, and 10, the dental implant 1000 according to the sixth embodiment of the present invention is provided with a groove 1215-1 in the protrusion 1215 of the abutment 1200. to be. Hereinafter, the groove 1215-1, which is different from the above-described embodiment, will be described. The groove 1215-1 may be recessed in an up and down direction along the circumferential surface of the protrusion 1215 and be formed at least one or more. When the protrusion 1215 is formed in two or more, the connection support part 1210 and the connection cover 1220 are in close contact with each other at the bottom of the protrusion 1215. There exists a problem that an adhesive solvent cannot penetrate into the recessed part formed by the protrusion part 1215. The groove 1215-1 formed in the protrusion 1215 may be a flow path through which the adhesive solvent flows down by its own weight so that the adhesive solvent penetrates and hardens evenly on the upper and lower ends. Accordingly, there is an effect that can firmly maintain the coupling of the connection support 1210 and the connection cover 1220.

The technical idea should not be interpreted as being limited to the above-described embodiment of the present invention. Various modifications may be made at the level of those skilled in the art without departing from the spirit of the invention as claimed in the claims. Therefore, such improvements and modifications fall within the protection scope of the present invention, as will be apparent to those skilled in the art.

100: Dental Implant
110: fixed body 115: fastening means
120: abutment 130: artificial tooth
200: gum
1000: Dental Implants
1100: fixed body 1150: fastening means
1200: abutment 1210: connection support
1211: upper part 1212: lower part
1213: engaging jaw 1215: protrusion
1215-1: Groove 1220: Connection Cover
1300: artificial tooth 2000: gum
D: outer diameter of protrusion D1: outer diameter of upper surface of protrusion
D2: outer diameter of the lower surface of the protruding portion d: outer diameter of the upper portion of the connecting support portion

Claims (8)

In the abutment 1200 of the dental implant 1000 is coupled to the fixed body 1100 is inserted into the gum and fixed, the artificial tooth 1300 is tightly coupled to surround the outer surface,
The abutment 1200 has a lower support 1212 is inserted into the gum and coupled to the fixing body 1100 and the upper support 1211 protruding outward,
It is provided with a connection cover 1220 is tightly coupled to surround the upper portion 1211 of the connection support portion 1210,
A protrusion 1215 protruding in a circumferential direction is formed in the upper portion 1211 of the connection support part 1210 to protrude in the circumferential direction to fix the coupled cover 1220 to the upper part 1211 of the connection support part 1210. At least one abutment for dental implants, characterized in that it is provided.
The method of claim 1,
In order to prevent the connection cover 1220 surrounding the upper portion 1211 of the connection support portion 1210 from flowing downward, a locking projection 1213 protruding in the circumferential direction of the connection support portion 1210 is formed,
The locking jaw (1213) is abutment of the dental implant, characterized in that formed in the position to partition the upper portion 1211 and the lower portion 1212 of the connection support (1210).
delete The method of claim 1,
The protrusion 1215 is abutment of the dental implant, characterized in that the outer diameter (D2) of the lower surface of the protrusion 1215 is larger than the outer diameter (D1) of the upper surface of the protrusion (1215).
The method of claim 1,
Abutment of the dental implant, characterized in that the outer diameter (D) of the protrusion 1215 has a size 1.2 to 1.5 times the outer diameter (d) of the upper portion 1211 of the connection support 1210.
The method of claim 1,
At least one groove 1215-1 is formed in the protrusion part 1215 to be recessed in the vertical direction so that the adhesive solvent flows downward when the connection support part 1210 and the connection cover 1220 are bonded to each other. Abutment for dental implants, characterized in that provided with one or more.
The method according to any one of claims 1, 2 and 4 to 6,
The connection support 1210 is formed of a titanium alloy material, the connection cover 1220 abutment of the dental implant, characterized in that formed of ceramics of zirconia material.
delete

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