WO2014035084A1

WO2014035084A1 - Dental implant

Info

Publication number: WO2014035084A1
Application number: PCT/KR2013/007362
Authority: WO
Inventors: 김형우
Original assignee: Kim Hyeong Woo
Priority date: 2012-08-28
Filing date: 2013-08-16
Publication date: 2014-03-06

Abstract

The present invention relates to a dental implant associated with an artificial tooth. An abutment type artificial tooth comprises: a prosthesis mounted on a fixture having a shaft hole formed inside and implanted into a jawbone, and an upper mounting portion; and a lower fastening shaft portion inserted into the shaft hole of the fixture so as to be resiliently combined to the fixture, wherein an impact buffer portion for more effectively buffering impact due to lateral external pressure or an occlusal force in various directions is provided at an abutment, a resilient fastening portion to be resiliently combined to the fixture is provided at the lower portion of the impact buffer portion, and the durability of a resiliently fastened portion is semipermanently maintained irrespective of an occlusal force in various directions due to numerous repeated occlusions by separating the impact buffer portion and the resilient fastening portion. Therefore, it is possible to greatly increase the lifetime of an implant and facilitate implantation.

Description

Dental implant

The present invention relates to a dental implant related to an artificial tooth, and more particularly, to form a shaft hole therein and to be implanted in the jawbone and the prosthesis is mounted on the upper mounting portion and the lower fastening shaft portion in the shaft hole of the fixture An abutment-type artificial tooth which is inserted and elastically coupled to the fixture has an impact buffer portion in the abutment that has a shock absorbing function that can more effectively cushion an impact caused by lateral external pressure or various directions of occlusal force. It has an elastic fastening portion elastically coupled to the fixing body at the bottom thereof, and by separating the shock absorbing portion and the elastic fastening portion, the durability of the elastic fastening portion is semi-permanently maintained irrespective of the occlusal force in various directions that are repeated a number of times, the life of the implant For dental implants that greatly extend the length of the A.

In general, an implant refers to a substitute of a lost natural tooth itself, or by implanting a fixture in the jawbone to fuse with the jawbone for a predetermined period of time, and then fixing a fastening member and a prosthesis such as an artificial tooth thereon, thereby restoring the original tooth. It is a dental procedure that restores function.

In the case of an implant generally used, the fasteners that are placed in the jawbone and the fasteners of the abutments are coupled to the upper shaft hole of the fasteners by a screwing method.

However, such a conventional screw coupling method has a problem such as loosening screw, fracture, non-aesthetic of the prosthesis because the fixture of the lower structure and the abutment of the upper structure is entirely dependent on the screw coupling.

In order to solve such a problem, the "dental implant" of the Republic of Korea Patent Publication No. 10-0668368 is a fastening leg of the shape memory alloy to form a shaft hole in the interior and is placed in the jawbone, and inserted into the shaft hole in the lower part Forming, and providing a dental implant comprising abutment for connecting the fixture through the fastening leg to chew food.

Such a conventional dental implant allows the fastening groove of the fixture and the fastening protrusion of the abutment to elastically complementarily complement the male and female, thereby preventing screw loosening and screw rupture, and aesthetics of the prosthesis. The effect can be obtained.

However, such a conventional dental implant does not have a separate structure that provides a shock-absorbing function for the occlusal force in the abutment, so when the external pressure (P) in the lateral direction is applied to the implant from the outside, the impact cannot be effectively dispersed. The impact is transmitted to the fastening leg that performs the elastic coupling function, and stress is concentrated on the connection part of the structurally weak fastening leg extended from the upper mounting part of the abutment, so that it is cracked, broken or worn, or the fastening leg is released from the fixing body. This often happens.

That is, since the fastening leg of the shape memory alloy cannot increase the diameter of the fixture placed in the jawbone indefinitely, the fastening leg that enters the inner shaft hole cannot also be infinitely Z. Even though it can be raised indefinitely, the fastening leg cannot be made thick for elastic coupling with the fixture, and it extends long from the upper mounting part of the abutment. When the occlusal force in the direction is applied to the implant, the impact is immediately transmitted to the fastening leg, and the fatigue load is rapidly cracked at the joint of the abutment leg due to the repeated fatigue load. As a result, there is a problem in that durability and service life are greatly reduced.

In addition, conventional dental implants that do not have a separate shock-absorbing function often wear out of the fastening leg or deviate from the fastening part of the fixture due to continuous lateral external pressure. When the external pressure was applied, the fastening leg type which was opened downward had a limit to more effective shock mitigation.

In addition, in order to avoid such mechanical weakness, if the incision portion of the fastening leg is partially formed only at the lower end of the lower fastening shaft portion of the abutment, there is a problem that the impact absorption effect on the occlusal force is significantly lowered.

An object of the present invention is to solve the above-mentioned conventional problems, by separating the structure that functions to couple the abutment to the fixture and the structure that buffers the impact applied to the abutment, to provide a high abutment The structure of the elastic fastening leg connecting to the stagnate can be protected against external force and can be firmly supported against the external pressure applied to the implant. By maximizing the cushioning effect significantly increases the durability of the connection of the connection leg, and to provide a dental implant that can extend the service life of the implant.

In addition, another object of the present invention is to provide a fastening portion of the elastic coupling method between the fixture and the abutment to prevent loosening of the screw or rupture of the screw, to secure the aesthetics of the prosthesis, between the fixture and the abutment The present invention provides an improved dental implant to facilitate detachment.

In order to achieve the above object, the present invention forms a shaft hole in the interior and is fixed to the jawbone (fixture), the lower fastening shaft portion and the prosthesis is inserted into the shaft hole of the fixing body and elastically coupled to the fixture In the dental implant comprising an abutment consisting of an upper mounting portion, and an elastic fastening means comprising an elastic fastening portion using an elastic restoring force formed on the lower fastening shaft portion of the abutment and a corresponding fastening portion corresponding to an inner surface of the shaft hole of the fixture. By forming an elastic fastening portion having a fastening leg coupled to the corresponding fastening portion of the fixture at the lower end of the lower fastening shaft portion of the abutment, and provided with an impact buffer consisting of at least one horizontal through hole separated from the fastening leg thereon Dental implant, characterized in that provided by separating the elastic coupling structure and the shock-absorbing structure It provides.

Preferably, the elastic fastening portion is formed of a fastening leg having a cutout formed therein, a fastening groove, a fastening protrusion or a fastening step is formed on each leg outer circumferential surface, and a fastening protrusion on the inner circumferential surface of the shaft hole of the fixing body to which the fastening leg is coupled. , A corresponding fastening portion formed of a fastening groove or fastening step is formed, and when the fastening shaft portion of the abutment is fitted to the fixture, the legs of the elastic fastening portion are configured to be elastically coupled to the corresponding fastening portion of the fixture.

More preferably, the elastic fastening portion has a fastening protrusion or a fastening step formed at a lower end of the fastening leg, and a corresponding fastening part formed of a fastening groove or fastening step is formed at a lower side of the shaft hole of the fixing body to which the fastening leg is coupled. Thus, when the fastening shaft portion is fitted to the fixing body, the legs of the elastic fastening portion are elastically coupled to the corresponding fastening portion of the fixing body.

Preferably, the stepped portion may be further formed between the shock absorbing portion and the elastic fastening portion below the shock absorbing portion.

Most preferably, the upper and lower ends of the shock absorbing part form a closed end, and the legs of the elastic fastening part protrude from the closed end of the lower part, and the horizontal through hole of the impact buffer part has a cross-sectional circumferential direction of the fastening shaft part. Is formed.

Preferably, the horizontal through-hole has a vertical cross section of a rectangular, circular, elliptical, or polygonal shape. More preferably, the plurality of horizontal through holes may be formed vertically.

More preferably, the horizontal through hole is filled with an elastic body made of rubber.

According to the dental implant according to the present invention in the structure for coupling the abutment to the shaft hole of the fixture placed in the jawbone, the lower fastening shaft portion of the abutment is provided with an impact buffer consisting of at least one horizontal through-hole, the shock buffer is the lower end A rod or tubular closed end is formed, and the lower part of the shock absorbing part is coupled to a fixed body by forming an elastic fastening part having a fastening leg separated from a horizontal through hole.

Accordingly, according to the dental implant according to the present invention, unlike the conventional simple fastening leg structure in the structure for connecting the abutment to the fixture, the fastening shaft portion connecting portion of the abutment by effectively dispersing the external force through the impact buffer of the closed end Significantly reinforces the structure, has the effect of preventing external force from impacting the elastic fastening portion, and consequently can be firmly supported against external pressure in the lateral or multiple directions applied to the implant, It can be more effectively distributed on the entire surface of the fixture to prevent damage and destruction of the jawbone caused by external pressure concentrated in one place, greatly extend the durability of the abutment upper and lower fastening shaft joints, and greatly increase the service life of the implant. Can be extended.

Further, according to the present invention, a fastening groove, a fastening protrusion or a fastening step is formed on the fastening portion of the elastic coupling method, that is, the leg outer circumferential surface between the fastener and the abutment, and the fastening protrusion, the fastening groove or the fastening step is formed on the inner circumferential surface of the fastener. Correspondingly formed, when the fastening shaft portion is fitted to the fixture, the legs of the elastic fastening portion is elastically detachable to the fixture. Therefore, according to the present invention, it is possible to prevent the loosening of the screw and the rupture of the screw, to secure the aesthetics of the prosthesis, and to facilitate the detachment between the fixture and the abutment, and to improve the implant procedure. The effect can be obtained.

1 is an exploded perspective view showing a dental implant according to the present invention.

Figure 2a is a cross-sectional view showing a structure in which a fastening protrusion is formed on the outer circumferential surface of the fastening leg in the dental implant according to the present invention, a fastening groove is correspondingly formed on the inner circumferential surface of the shaft hole is coupled to the fixture and the abutment.

Figure 2b is a cross-sectional view showing a structure in which a fastening groove is formed on the outer peripheral surface of the fastening leg in the dental implant according to the present invention, the fastening protrusion is formed correspondingly on the inner circumferential surface of the shaft hole is coupled to the fixture and the abutment.

3 is an exploded perspective view illustrating a structure in which a fastening protrusion is formed at the end of the fastening leg in the dental implant according to the present invention, and a fastening groove is formed at the end of the inner circumferential surface of the shaft hole.

Figure 4a is a cross-sectional view showing a structure in which a fastening protrusion is formed on the outer peripheral surface of the end of the fastening leg in the dental implant according to the present invention, the fastening groove is correspondingly formed on the end of the inner circumferential surface of the shaft hole is coupled to the fixture and the abutment.

Figure 4b is a cross-sectional view showing a structure in which a fastening groove is formed on the outer peripheral surface of the end of the fastening leg in the dental implant according to the present invention, the fastening protrusion correspondingly formed on the end of the inner circumferential surface of the shaft hole is coupled to the fixture and the abutment.

5A to 5D are cross-sectional views illustrating the horizontal through holes provided in the dental implant according to the present invention having various structures and numbers.

6A through 6D are side views illustrating various horizontal through holes provided in the dental implant according to the present invention in a circular, rectangular, elliptical, or polygonal shape.

7a to 7c is a side view showing that the horizontal through-hole formed in the dental implant according to the present invention is configured differently in the vertical position, shape or number.

8A is a cross-sectional view illustrating a structure in which a step is formed between the shock absorbing portion of the abutment and the lower fastening leg to prevent the settlement of the abutment, as well as more effectively cushioning the vertical occlusal force, and FIG. 8B is a fastening leg of the abutment It is a cross-sectional view showing that the upper end of the cut portion formed therein may be rounded.

FIG. 9B is a cross-sectional view showing that the cross section of the shock absorbing part formed of the horizontal through hole is formed as a closed end of the rod shape, and FIG. 9C is a cross-sectional view illustrating the cross section of the shock absorbing part made of the horizontal through hole being made of the closed end of the tubular shape.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. However, the term 'fastening legs' described in the present invention is not only made of a pair as shown in the following drawings, it may be formed only on one side, and furthermore, the number of legs can also be variously modified It is noted that the scope of the present invention should be interpreted as including even such modified embodiments.

Dental implant 100 according to the present invention, as shown in Figure 1 as an exploded assembly view, the shaft hole 112 is formed therein and a guide hole 114 is formed on the top of the fixture to be implanted in the jawbone ( The abutment comprising a lower fastening shaft 122 which is inserted into the shaft hole 112 of the fixing body 110 and coupled to the fixing body 110, and an upper mounting portion 124 on which the prosthesis is mounted. 120).

The abutment 120 is preferably made entirely of a shape memory alloy, or at least the fastening shaft portion 122 of the abutment 120 is partially made of a shape memory alloy.

That is, the shape memory alloy used in the abutment 120 is an alloy material known in the art, which has a large elastic restoring force, remembers a desired shape, and is restored to its shape when an appropriate temperature is obtained when a shape change is brought about by external force. It is an alloy that is a kind of self-recoverable constituent material having characteristics. Such shape memory alloys include Ti-Ni alloys and Cu-Zn-Al alloys. In addition, the dental implant according to the present invention may be made of a polymer material having elasticity.

In addition, the dental implant 100 according to the present invention, is provided with a shock absorbing unit 130 consisting of at least one horizontal through hole 132, the lower end of which is located in the lower fastening shaft portion 122 of the abutment 120, An elastic fastening part 140 having a fastening leg 142 separated from the horizontal through hole 132 is formed at a lower portion of the shock buffer 130 to be coupled to the fixture 110.

And the elastic fastening portion 140 formed in the lower portion of the shock buffer 130 is that the fastening legs 142 protruding from the rod or tubular closed end 132a of the shock buffer 130, A fastening groove 152, a fastening protrusion 154, or a fastening step is formed on an outer circumferential surface of each leg 142, and a fastening protrusion 154 on an inner circumferential surface of the shaft hole 112 of the fixing body 110 to which the leg 142 is coupled. ), A fastening groove 152 or a fastening step is formed so that when the lower fastening shaft portion 122 of the abutment is fitted to the fixing body 110, the legs 142 of the elastic fastening part 140 are elastically fixed body ( 110).

That is, as shown in FIG. 2A, when the fastening protrusion 154 formed on the outer surface of the fastening leg 142 is formed, the fastening groove 152 corresponding to the fastening protrusion 154 is fixed body 110. Is formed on the inner circumferential surface of the shaft hole 112 of the fastener 110 and the fastening leg 142 to form a fastening means.

Alternatively, as shown in FIG. 2B, when the fastening groove 152 is formed on the outer surface of the fastening leg 142, the fastening protrusion 154 is formed on the inner circumferential surface of the shaft hole 112, and the fastening protrusion ( 154 and fastening groove 152 interact to form the fastening means. Here, the fastening grooves 152 may each have an arcuate concave structure, and the fastening protrusions 154 may each have an arcuate convex structure.

3, the fastening protrusion 154 is formed at the lower end of the fastening leg 142, and the fixing body 110 to which the leg 142 is coupled as shown in FIG. 3. A fastening groove 152 is formed in the lower side of the shaft hole 112 so that when the fastening shaft part 122 is fitted to the fixing body 110, the legs 142 of the elastic fastening part 140 are elastically fixed body ( It may be a structure coupled to the shaft hole 112 of 110.

In this structure, as shown in FIG. 4A, the fastening protrusion 154 formed at the lower end of the fastening leg 142 is formed in the fastening groove 152 formed at the lower side end of the shaft hole 112 of the fixing body 110. When fitted, the legs 142 of the fastening part 140 are elastically coupled to the fixture 110.

Alternatively, as shown in Figure 4b, the fastening groove 152 is formed at the lower end of the fastening leg 142, the lower side of the shaft hole 112 of the fixing body 110 to which the leg 142 is coupled When the fastening protrusion 154 is formed correspondingly, and the fastening shaft portion 122 is fitted to the fixing body 110, the fastening groove 152 formed at the lower end of the fastening leg 142 is the shaft hole 112 of the fixing body 110. The fastening protrusion 154 formed at the lower side end may be fitted, and the legs 142 of the fastening part 140 may be elastically coupled to the fixing body 110.

In the structure of the present invention as described above, the lower end of the shock absorbing unit 130 forms a closed end 132a, and the horizontal through hole 132 of the shock absorbing unit 130 is shown in FIG. 5A, Although one may be formed in the fastening shaft portion 122, as shown in Figure 5b, two are formed side by side, or as shown in Figures 5c and 5d, circumferential equal intervals in the cross section of the fastening shaft portion 122 As three to four, a plurality can be formed.

That is, at least one shock buffer 130 including the horizontal through hole 132 is formed in the fastening shaft 122, and the shape of the horizontal through hole 132 is illustrated in FIGS. 6A to 6D in its vertical cross section. As will be appreciated, it can be variously configured in a circular, square, oval, or polygonal shape. In addition, the horizontal through hole may be variously modified in the position, shape and number of the vertical direction as shown in Figure 7a to 7c. That is, FIG. 7 (a) shows that two horizontal through holes having a rectangular vertical cross section are formed, and FIG. 7 (b) shows that three horizontal through holes having a rectangular vertical cross section are formed, and FIG. ) Shows that three horizontal through-holes having a vertical cross section of a circle, a rectangle, and a triangle are sequentially formed.

The horizontal through hole 132 of the shock absorbing unit 130 is formed over a portion of the fastening shaft 122 of the abutment 120, or extended to the inside of the upper mounting portion 124 of the fastening shaft 122. Of course it can be.

Also preferably, the horizontal through hole 132 may be additionally filled with a rubber material (not shown) to function as an auxiliary elastic means, and the shape of the fastening shaft 122 may be cylindrical as well. It may be manufactured in a polygon for preventing rotation, and may also be manufactured in a mixture of a cylinder and a polygon.

On the other hand, the fastening shaft portion 122, that is, the shock buffer 130 and the elastic fastening portion 140 may be formed in a cylindrical, polygonal column, cylindrical structure with a constant cross-sectional area from the upper end to the lower end, from the upper end to the lower end It may be formed in a tapered cylinder, a polygonal column or a columnar structure in which the cylinder and the polygon whose cross-sectional area is reduced.

The dental implant 100 according to the present invention configured as described above, the fixture 110 is placed in the jaw bone of the patient as in the prior art (植立), the abutment (112) in the shaft hole 112 of the fixture 110 ( The fastening shaft part 122 of 120 is inserted and fixed.

At this time, when the fastening shaft portion 122 of the abutment 120 is inserted into the shaft hole 112 of the fixture 110, the abutment 120 is formed by a fastening protrusion 154 formed on the outer peripheral surface of the fastening leg 142 of the abutment 120. The fastening leg 142 of the) is bent inward, the space between the fastening legs 142 formed due to the incision inside provides a free space bent inward.

In this state, when the fastening protrusion 154 of the fastening leg 142 coincides with the fastening groove 152 of the shaft hole 112, the fastening groove 152 and the fastening protrusion are caused by the elastic restoring force of the fastening leg 142. 154 is coupled to each other, a stable coupling between the abutment 120 and the fixture 110 (see Fig. 2a).

Alternatively, in the process of inserting the fastening shaft portion 122 of the abutment 120 into the shaft hole 112 of the fixture 110, the fastening leg of the abutment 120 by a fastening protrusion 154 formed inside the shaft hole 112. As the 142 is bent inwardly, the fastening shaft portion 122 of the abutment 120 is inserted into the shaft hole 112 of the fixture 110. In this case, the space between the fastening legs 142 provides a free space that is bent inside, and in this state, when the fastening grooves 152 of the fastening legs 142 coincide with the fastening protrusions 154 of the shaft holes 112. The fastening groove 152 and the fastening protrusion 154 are coupled to each other by the elastic restoring force of the fastening leg 142, and a stable coupling is made between the abutment 120 and the fixed body 110 (see FIG. 2B).

As described above, the dental implant 100 according to the present invention has a structure in which the abutment 120 is coupled to the shaft hole 112 of the fixture 110 that is placed in the jawbone, in the lower fastening shaft portion 122 of the abutment 120. And a shock absorbing part 130 formed of at least one horizontal through hole 132 having a shock absorbing function and having a closed end 132a. The lower part of the shock absorbing part 130 has a horizontal through hole 132. The fastening leg 142 is separated from the structure is coupled to the fixture 110,

Therefore, in the present invention, unlike the existing leg 142 structure, the external force or external impact force applied to the abutment due to the impact buffer 130 does not affect the fastening projection or the fastening groove of the fastening portion, the impact force of the fastening shaft portion It is dispersed throughout the 122, and unlike the conventional leg 142 structure, the external force load is not concentrated at any one of the fastening shaft portions 122.

As such, the present invention effectively disperses the external force to significantly structurally protect the elastic fastening portion formed in the lower fastening shaft portion of the abutment 120, and consequently more effectively the external pressure or impact force applied to the implant 100. It can be dispersed on the entire surface to prevent damage and destruction of the jawbone, greatly extend the durability of the fastening portion 140, can greatly extend the service life of the implant (100).

In addition, the present invention is a fastening groove 152, a fastening protrusion 154 or a fastening step between the fixing body 110 and the abutment 120 of the fastening portion 140 of the elastic coupling method, that is, the outer peripheral surface of the leg 142 The fastening protrusion 154, the fastening groove 152, or the fastening step are formed on the inner circumferential surface of the shaft hole 112 of the fixing body 110, and the lower fastening shaft portion 122 of the abutment is fixed to the fixing body 110. When fitted, the legs 142 of the fastening part 140 are elastically detachable and coupled to the fixing body 110.

Therefore, the conventional screw loosening or screw rupture can be prevented, the aesthetics of the prosthesis can be secured, and the attachment and detachment between the fixing body 110 and the abutment 120 can be easily performed to easily perform the implant 100 procedure. can do.

Meanwhile, a modified embodiment of the present invention is shown in FIGS. 8 and 9. 8A is a stepped portion formed between the abutment shock buffer 130 and the lower fastening leg 142 to prevent the abutment from sinking downwards, as well as an impact buffer made of a horizontal through hole to more effectively buffer the vertical occlusal force. It shows a structure that can be, as described above, the fastening shaft portion of the abutment can be modified in various structures and forms. In addition, FIG. 8B illustrates a modified embodiment showing that the upper end of the cutout formed inside the fastening leg 142 of the abutment may be rounded.

FIG. 9B is a cross-sectional view showing that the cross section of the shock absorber including the horizontal through hole is formed as a closed end of the rod shape, and FIG. 9C is a cross-sectional view illustrating the cross section of the shock absorber formed as the horizontal through hole having a tubular closed end portion. to be. As such, it is apparent that the cross section of the shock absorbing portion may be formed of a closed end of various shapes as well as a rod or tubular shape.

Although the present invention has been described in detail with reference to the accompanying drawings, the present invention is not limited to such a specific structure. Those skilled in the art may variously modify or change the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. For example, a modified embodiment formed between the fastening leg and the fastening leg instead of the fastening protrusion, the fastening groove or the fastening step in the elastic coupling means or the lower fastening shaft portion and the upper mounting portion of the abutment in two structures As well as the modified embodiment formed separately, including the modified embodiment formed by varying the height or position of the fastening protrusion, the fastening groove or the fastening step formed in the elastic fastening portion of the abutment, furthermore, It is intended that it be apparent in advance that all simple modifications or variations in the scope will fall within the scope of the present invention.

On the other hand, by forming a step in the outward direction along the upper outer peripheral surface of the fastening shaft portion extending to the upper mounting portion when the fastening shaft is coupled to the shaft hole of the fixture, the step is seated to be interviewed on the upper side of the fixture, as a result, the occlusal force, etc. It is also revealed that landlords can be prevented from sinking.

Claims

An abutment formed of a fixture formed in the shaft hole in the jawbone and inserted into the shaft hole of the fixture, the lower fastening shaft portion elastically coupled to the fixture and the upper mounting portion on which the prosthesis is mounted. In the dental implant comprising an elastic fastening means consisting of an elastic fastening portion using the elastic restoring force formed on the lower fastening shaft portion of the abutment and a corresponding fastening portion formed corresponding to the inner surface of the shaft hole of the fixture.

By forming an elastic fastening portion having a fastening leg for engaging with the corresponding fastening portion of the fixture at the lower end of the lower fastening shaft portion of the abutment, and provided with an impact buffer consisting of at least one horizontal through hole separated from the fastening leg, Dental implant, characterized in that provided by separating the elastic coupling structure and the impact buffer structure.
According to claim 1, The elastic fastening portion is made of a fastening leg formed with a cut-out inside, a fastening groove, a fastening protrusion or a fastening step is formed on the outer peripheral surface of each leg, the inner circumferential surface of the shaft hole of the fixture to which the fastening leg is coupled A corresponding fastening portion consisting of a fastening protrusion, a fastening groove, or a fastening step is formed, and when the fastening shaft portion of the abutment is fitted to the fixture, the legs of the elastic fastening portion are elastically coupled to the corresponding fastening portion of the fixture. .
The fastening protrusion or the fastening step is formed at the lower end of the fastening leg, and the corresponding fastening part formed of the fastening groove or the fastening step is formed on the lower side of the shaft hole of the fixture to which the fastening leg is coupled. It is formed, the dental implant, characterized in that the legs of the elastic fastening portion is elastically coupled to the corresponding fastening portion of the fixture when the fastening shaft portion is fitted to the fixture.
2. The shock absorbing part of claim 1, wherein the upper and lower ends of the shock absorbing part form a closed end, the legs of the elastic fastening part protrude from the closed end of the lower part, and the horizontal through hole of the shock absorbing part is a cross-section circumference of the fastening shaft part. Dental implant, characterized in that formed in the direction.
The dental implant according to claim 1 or 2, further comprising a stepped portion between the impact buffer and an elastic fastening portion at a lower portion thereof.
The dental implant of claim 1, wherein the horizontal through-hole has a vertical cross section having a rectangular, circular, elliptical, or polygonal shape.
The dental implant of claim 1, wherein the horizontal through hole is filled with an elastic material made of rubber.