WO2015093673A1

WO2015093673A1 - Dental implant

Info

Publication number: WO2015093673A1
Application number: PCT/KR2013/012139
Authority: WO
Inventors: 김형우; 김균환; 김선영
Original assignee: 김형우; 김균환; 김선영
Priority date: 2013-12-19
Filing date: 2013-12-24
Publication date: 2015-06-25
Also published as: WO2015093863A1; KR20150072363A; KR101697406B1

Abstract

The present invention relates to a dental implant relating to an artificial tooth and provides a dental implant comprising: a fixture, which has a longitudinal axial hole formed in the upper part thereof and is implanted into alveolar bone; and an abutment, which comprises a lower coupling axial part longitudinally inserted into the axial hole of the fixture and coupled to the fixture and an upper mounting part having a prosthesis mounted thereon, wherein the abutment has a spiral coil spring elastic part formed therein to buffer occlusal force. By having a structure in which the abutment itself is buffered by the elastic part, the present invention can have the excellent effect of having the same feel and function as a natural tooth by efficiently buffering vertical occlusal force or lateral pressure exerted on the implant when food is chewed.

Description

Dental implant

The present invention relates to a dental implant related to an artificial tooth, and more particularly in a structure in which the abutment is coupled to the fixture, the abutment itself is provided with a predetermined spiral coil spring elastic part on the upper or lower side of the abutment. By having a buffer structure, it relates to a dental implant improved to effectively buffer the vertical bite force or lateral pressure applied to the implant when chewing food, giving a feeling and function like natural teeth.

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

In the case of an implant generally used, a fixture is placed in the alveolar bone and the abutment is coupled to the upper shaft hole of the fixture by a screwing method.

However, this conventional screw coupling method is because the fixing of the lower structure and the abutment of the upper structure is completely dependent on the screw coupling, loosening, screw fracture, fracture of the prosthesis of the ceramic type due to the impossibility of the buffering force There was a serious problem.

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 fixed body is formed in the alveolar bone and formed in the alveolar bone and inserted into the shaft hole in the lower portion Forming, and providing a dental implant comprising abutment for connecting the fixture through the fastening leg to chew food.

Such a conventional dental implant has a coupling groove of the inner surface of the shaft hole of the fixture and the abutment of the abutment elastically complementary between the male and female, thereby preventing the loosening of the screw or rupture of the screw, The aesthetics of the prosthesis can be secured and the effect of facilitating the implant procedure can be obtained.

However, such a conventional dental implant has the effect of restoring the chewing function of the tooth by replacing the lost natural tooth, but when chewing food, it is difficult to completely reproduce the sense and shock absorbing function like the natural tooth. there was. In particular, it was almost impossible to buffer the vertical occlusal force.

That is, natural teeth have a periodontal ligament with a thickness of about 0.2 to 0.5 between the lower root and the alveolar bone to provide a cushioning function. When chewing foods, the periodontal ligament naturally buffers its impact force and does not feel discomfort. The problem does not occur.

However, conventional implants have no buffering means or are incomplete in structure, and when chewing hard or tough foods, the fixture or abutment is broken due to the impact force, or the coupling method of the fixture and abutment is internal due to the bite force. In the type, the abutment sinks into the fixture, or there is no shock absorbing function, so that excessive occlusal force is applied to the natural teeth, which conflict with the implant, resulting in severe problems for the user, such as shortening the life of the abutment teeth or detaching the abutments from the fixture.

An object of the present invention is to solve the above-mentioned conventional problems, in the structure in which the abutment itself is coupled to the fixture, the abutment itself has a structure that buffers the occlusal force, so that the vertical bite force applied to the implant when chewing food or The present invention provides an improved dental implant that efficiently buffers the lateral pressure to provide a natural tooth-like feel and function and to protect the elastic fastener from the bite force.

In order to achieve the above object, the present invention is to form a shaft hole in the axial direction on the upper and the lower fastening shaft portion and prosthesis is inserted in the longitudinal hole in the shaft hole of the fixture and coupled to the fixed body in the alveolar bone In the dental implant comprising abutment consisting of an upper mounting portion to be mounted to provide a dental implant having a spiral coil spring elastic portion formed on the abutment to cushion the occlusal force.

And the present invention, preferably, the spiral coil spring elastic portion provides a dental implant consisting of a coil spring integrally formed on the abutment by processing the abutment itself.

In addition, the lower fastening shaft portion of the abutment including the coil spring elastic portion is preferably made of an elastic material such as a shape memory alloy or a high elastic polymer system.

Preferably, the dental implant having an elastic fastening portion that is elastically complementary to the corresponding fastening portion formed on the inner surface of the fixture shaft hole at the lowermost end of the abutment lower fastening shaft portion and is male and female complementary elastically coupled to form a spiral coil spring elastic portion thereon. Provide implants for

In this case, preferably, the outer diameter of the upper elastic spring elastic part is larger than the outer diameter of the lower elastic fastening part to have a stepped portion so that the impact is not transmitted to the lower elastic fastening part when the abutment is impacted by the occlusal force so that the elastic fastening part Ensure protection against bite impacts.

In addition, the present invention is preferably formed in the lower end of the abutment lower fastening shaft portion of the spiral coil spring elastic portion formed on the upper side of the corresponding fastening portion formed on the inner surface of the fixed shaft shaft hole and the elastic fastening portion that is elastically complementary to the male and female complementary Provide dental implants.

In addition, the present invention preferably, the upper mounting portion is formed in the axial axial hole in the upper portion and the fixed body is placed in the alveolar bone and the lower fastening shaft portion and the prosthesis are inserted in the longitudinal direction in the axial hole of the fixed body to engage the fixed body In the dental implant comprising an abutment consisting of: a first coil spring elastic portion formed at the lowermost end of the lower fastening shaft portion of the abutment elasticity is elastically complementary elastically complementary to the corresponding fastening portion formed on the inner surface of the fixed shaft shaft hole thereon Provided is a dental implant having a fastening portion and a second coil spring elastic portion formed thereon.

Such a structure can provide the ability to overcome tolerances that inevitably occur during fixing and abutment machining. In other words, even if the position of the fastening portion of the abutment and the corresponding fastening position of the fixing body can be accurately fastened by the first coil spring elastic portion formed at the bottom even if minute force inconsistency occurs during machining. That is, for example, even if the abutment of the abutment is processed to a higher position than the corresponding abutment of the fixture, if the appropriate pressure is applied at the time of fastening, the first coil spring elastic part may be compressed to fasten the abutment and the fixture.

The abutment elastic fastener provides an elastic fastener type dental implant made of a variety of incisions formed in a fastening leg type or hollow tubular (pipe) shaped fastening shaft.

The corresponding fastening portion of the fixture provides a dental implant formed in an annular shape over the entire circumferential direction on the inner surface of the fixture shaft hole or formed only at a predetermined portion in the circumferential direction.

In addition, the present invention is preferably, the upper mounting portion is formed in the shaft hole in the axial direction in the upper portion and the fixing body is placed in the alveolar bone and the lower fastening shaft portion and the prosthesis are inserted in the longitudinal direction in the shaft hole of the fixing body and coupled to the fixing body. A dental implant comprising abutment made of: a coil spring elastic portion of a spiral shape configured to the lower end of the lower fastening shaft to buffer the occlusal force to the lower fastening shaft portion of the abutment; And it provides a dental implant, characterized in that the fastening portion consisting of a fastening projection formed on the distal end of the coil spring elastic portion.

At this time, preferably the outer diameter of the coil spring elastic portion of the upper side is formed larger than the outer diameter of the coil spring elastic portion of the lower side where the fastening portion consisting of the fastening protrusion is located so that when the abutment is impacted by the occlusal force, the impact reaches the lower fastening portion This prevents the fastenings from being protected from bite forces.

This structure is a structure that does not have to be provided with a separate elastic fastening portion is a useful structure in the situation that can only be placed in a fixed length of a short length.

In addition, the present invention preferably may be given in various forms for easily performing abutment detachment to the abutment upper mounting portion. For example, a polygonal groove may be formed in the upper part of the upper mounting part, or a axial wall (side) of the upper mounting part of the abutment may be formed into a polygon, or a horizontal through hole may be formed in a portion of the upper mounting part so that the abutment detachment mechanism may be applied. It provides a dental implant, characterized in that the provision.

In another aspect, the present invention can provide a dental implant, characterized in that the non-metal elastic material is filled in the spiral coil spring elastic portion.

In addition, the present invention can form the lower fastening shaft portion of a shape memory alloy or a good elastic polymer material.

According to the present invention, the abutment formed of a fixed shaft formed in the axial hole in the upper portion and placed in the alveolar bone, the lower fastening shaft portion is inserted in the longitudinal direction in the shaft hole of the fixed body and the upper mounting portion is mounted to the prosthesis. In a dental implant comprising an implant structure having a coil spring elastic portion processed into a spiral coil shape to cushion the vertical occlusal force or lateral pressure applied to the prosthesis on the abutment.

Therefore, according to the present invention, the abutment itself has a structure that buffers the occlusal force, and effectively buffers the vertical occlusal force or lateral pressure applied to the implant when chewing food, thereby perfectly reproducing the feeling and shock absorption function like natural teeth. The effect of ameliorating various serious problems is obtained.

1 is an exploded perspective view illustrating a dental implant according to the present invention, in which a coil spring elastic part is located on an upper side of a lower fastening shaft part of abutment and an elastic fastening part of a fastening leg type is located on a lower side. .

FIG. 2 is a cross sectional view of the dental implant shown in FIG. 1 in accordance with the present invention. FIG.

3 is an exploded perspective view illustrating a dental implant according to the present invention, in which a spiral coil elastic part is located at a lower side of a lower fastening shaft part of abutment and an elastic fastening part of a fastening leg type is located at an upper side thereof. .

FIG. 4 is a cross sectional view of the dental implant shown in FIG. 3 in accordance with the present invention. FIG.

Fig. 5 is a dental implant according to the present invention, in which a coil spring elastic part is located on the upper side from the lower fastening shaft part of the abutment and is elastically fastened by an incision formed on a fastening shaft part of a hollow tube (pipe) shape. An exploded perspective view showing a structure in which a piece type elastic fastening portion is located on the lower side.

FIG. 6A is a combined cross-sectional view of the dental implant shown in FIG. 5 in accordance with the present invention. FIG.

Figure 6b is a dental implant according to the present invention, the coil spring elastic portion is located on the lower side from the lower fastening shaft portion of the abutment, the elastic fastening piece is a hollow tube (pipe) -shaped fastening shaft by the incision (b) of the mold It is a sectional view showing the structure in which the elastic fastening part of the type formed in the floating part is located on the upper side.

Figure 7 is a dental implant according to the present invention, the coil spring elastic portion is located on the upper side, the elastic coupling piece of the type formed on the fastening shaft portion of the hollow tube (pipe) shape by the "⊂" type incision It is an exploded perspective view which shows the structure in which the fastening part is located in the lower side.

FIG. 8A is a cross sectional view of the dental implant shown in FIG. 7 in accordance with the present invention. FIG.

8B is a dental implant according to the present invention, in which a coil spring elastic part is located on the lower side, and an elastic fastening piece is formed on a fastening shaft part of a hollow tubular (pipe) shape by a “⊂” shaped incision; It is sectional drawing which shows the structure which a fastening part is located in the upper side.

Figure 8c is a dental implant according to the invention, the coil spring elastic part is located on the upper side, the elastic fastening piece is formed on the fastening shaft portion of the hollow tube (pipe) shape by the "a" shaped incision It is sectional drawing which shows the structure in which the fastening part is located in the lower side.

9A and 9B are dental implants according to the present invention, in which an elastic fastening piece is formed on a hollow tube (pipe) -shaped fastening shaft by a fastening leg type elastic fastening part 9a or one continuous incision. It is an exploded perspective view showing a structure in which the elastic fastening portion 9b of the type formed in the coil spring elastic portion of the upper portion is larger than the outer diameter size of the elastic fastening portion of the lower portion when the elastic spring portion 9b of the type is positioned.

10 is a dental implant according to the present invention, the coil spring elastic portion is a structure in which the first coil spring elastic portion, the second coil spring elastic portion is positioned above and below the elastic fastening portion that engages with the corresponding fastening portion of the inner surface of the shaft hole. It is an exploded perspective view shown.

11 is an exploded perspective view of a dental implant according to the present invention, in which a coil spring elastic part is configured to a lower end of a lower fastening shaft and a fastening protrusion is formed at a distal end of a coil spring elastic part. Although not shown, it is obvious that the outer diameter of the upper coil spring elastic part may be formed in a structure larger than the outer diameter of the lower coil spring elastic part with the fastening part.

12 is an exploded perspective view showing various modified structures as a dental implant according to the present invention.

12A is an exploded perspective view illustrating a structure in which a coil spring elastic part is formed at an upper mounting portion of the abutment, and is a structure suitable for a temporary abutment to cushion the occlusal force as much as possible.

FIG. 12B is an exploded perspective view illustrating a structure in which a vertical cutout is formed in the upper mounting portion so that over denture may be detached from the upper mounting portion of the abutment; FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

Dental implant 200 according to the present invention, as shown in Figure 1 as a whole, to form a shaft hole 112 in the axial direction on the top and the fixing body 110 is implanted in the jawbone, the fixing body 110 It is a structure including the abutment 120 made of a lower fastening shaft 130 is coupled to the shaft hole 112 in the longitudinal direction and the upper mounting portion 100 is fixed to the prosthesis 122 on the top.

In addition, the present invention is provided with a coil spring elastic portion 140 configured to buffer the vertical engagement force or the lateral pressure applied to the abutment 120 to the lower fastening shaft 130 of the abutment 120, such a coil Spring elastic portion 140 is formed of a coil spring 142 formed integrally by processing the upper side of the lower fastening shaft 130, a plurality of legs 152 are formed at the bottom of each of the legs 152 ) Is a structure in which a fastening protrusion 152a is formed at an outer circumferential surface of the bottom thereof.

The fastening groove 152b formed in the inner surface of the shaft hole 112 of the fixing body 110 into which the lower fastening shaft 130 of the abutment 120 is inserted corresponds to the fastening protrusion 152a of the respective legs 152. Is formed, and the fastening protrusion 152a of the abutment 120 is elastically coupled to the fastening groove 152b of the fixture 110 so that detachment between the fixture 110 and the abutment 120 is elastic. Is done.

In such a structure, a fastening groove (not shown) is formed in the abutment 120 instead of the fastening protrusion 152a, and the fastening protrusion (not shown) is instead of the fastening groove 152b in the fixing body 110. Of course, they may be formed and combined with each other.

And the coil spring elastic portion 140 is made of a hollow tube by drilling a vertical hole in the lower fastening shaft portion using a super drill or an ultrasonic processing machine using an electric discharge, and then spirally cut using a wire cutter using an electric discharge. As shown in cross section in FIG. 2, the coil spring 142 may be formed in a structure.

Therefore, in the structure of the coil spring elastic portion 140, in the state where the abutment 120 is coupled to the fixture 110, the upper mounting portion 100 on which the prosthesis 122 is mounted is the coil spring elastic portion 140. By using the present invention can achieve a structure that can be moved up and down by a predetermined gap (d), and when chewing food using the present invention, by efficiently buffering the vertical occlusal force or lateral pressure applied to the implant to obtain a feeling like natural teeth Can be.

In the present invention having such a structure, unlike the above, the position of the coil spring elastic part 140 may be located under the fastening shaft 130.

That is, as shown in Figure 3, the coil spring elastic portion 140 is made of a coil spring 142 formed integrally by processing the lower side of the fastening shaft 130, a plurality of legs on the upper outside 152 are formed, and each of the legs 152 has a fastening protrusion 152a formed at an outer circumferential surface thereof, and a fastening groove 152b formed corresponding to an inner surface of the shaft hole 112 of the fixture 110. It may be elastically coupled to the structure in which the fixing body 110 and the abutment 120 is detached.

That is, such a structure is formed of a hollow tube by drilling a vertical hole in the lower fastening shaft with a super drill using an ultrasonic processor or electric discharge, and spirally using the wire cutter using the electric discharge on the lower side of the lower fastening shaft 130. The cutting process forms a structure of the coil spring 142, as shown in cross section in FIG.

In addition, the fastening grooves 152b are formed on the inner surface of the shaft hole 112 of the fixing body 110 to which the legs 152 are fastened to form extension portions 146 having a predetermined length up and down, respectively, to chew food. The fastening protrusion 152a provided on the leg 152 of 120 is moved up and down in the extension part 146 of the fastening groove 152b formed corresponding to the inner surface of the shaft hole 112 of the fixing body 110. It is possible, through the coil spring elastic portion 140 allows the space to achieve the vertical movement of the vertical gap (d) up and down.

Therefore, when chewing food in the structure of the coil spring elastic portion 140, the abutment 120 can be buffered over a predetermined gap (d) up and down through the coil spring elastic portion 140, and applied to the implant Losing can effectively absorb the vertical bite force or lateral pressure to achieve a natural tooth feel.

The present invention, unlike the above, may have a structure as shown in FIG. 5. That is, the present invention forms an axial hole 112 in the upper portion and is fixed to the jawbone 110 and the jawbone, The abutment 120 includes a lower fastening shaft 130 inserted into the shaft hole 112 of the fixture 110 in the longitudinal direction and an upper mounting portion 100 to which the prosthesis 122 is fixed.

In addition, the coil spring elastic portion 140 and the fixed body 110 of the coil shape configured to buffer the vertical engagement force or the lateral pressure applied to the abutment 120 to the lower fastening shaft 130 of the abutment 120. Fastening groove 160 having a concave engaging groove 162 formed in the circumferential direction of the inner side of the shaft hole 112 and a lower fastening shaft 130 of the abutment 120, and a hollow pipe (pipe) -shaped fastening shaft. The elastic fastening piece 170 provided by various types of cutouts formed around the fastening protrusions 172 corresponding to the locking grooves 162 of the fastening grooves 160 by various types of cutouts on the floating part. It is a structure to include.

Here, the coil spring elastic portion 140 is formed of a coil spring 142 formed integrally by processing the upper side of the lower fastening shaft 130, the lower portion on the fastening shaft portion of the hollow tube (pipe) shape The provided elastic fastening piece 170 is formed.

The elastic fastening piece 170 is preferably a "∩" around the fastening protrusion 172 formed on the fastening shaft portion of the hollow tube (pipe) shape of the lower fastening shaft 130 of the abutment 120 When the abutment 120 is pushed into the shaft hole 112 of the fixing body 110 by forming an incision portion 176a of the elastic member, the fastening protrusion 172 of the elastic fastening piece 170 becomes “상기”. When the abutment reaches the final position, it flexes elastically through the incision 176a of the " -shaped cutout 176a, and returns to its original position, and the locking groove 162 of the concave ring-shaped structure of the fastening groove 160 is formed. It is elastically coupled to the elastic fastening.

Such an elastic fastening piece 170 may be made of various cutouts (not shown) structure, such as "∪" type, "⊂" type, "⊃" type, instead of the "∩" type cutout 176a. When the abutment 120 is pushed into the shaft hole 112 of the fixing body 110 by obtaining an elastic force in the incision structure of various shapes, the fastening protrusion 172 of the elastic fastening piece 170 is various. Due to the shape of the incision (not shown), it is elastically bent into the hollow tube (pipe) and when the abutment reaches its final position, it returns to its position and concave of the fastening groove 160 formed on the inner surface of the shaft hole of the fixture. It will be understood that the elastic coupling is elastically coupled to the locking groove 162 of the ring structure.

Therefore, in such a structure, when the abutment 120 is pushed into the shaft hole 112 of the fixing body 110, the fastening protrusion 172 is connected to the fastening groove portion 160 by the elastic force of the elastic fastening piece 170. It is elastically fastened by engaging the engaging groove 162, and in the state in which the abutment 120 and the fixed body 110 is coupled, as shown in Figure 6a, when chewing food, the abutment 120 is Due to the coil spring elastic part 140 allows a space for the vertical movement of the vertical gap (d) up and down.

On the other hand, as shown in Figure 6b, the coil spring elastic portion 140 is made of a coil spring 142 integrally formed by processing the lower side of the lower fastening shaft 130 of the abutment, It may have a structure in which an elastic fastening piece 170 is formed due to a cutout on a hollow tube (pipe) -shaped fastening shaft portion at an upper portion thereof.

The elastic fastening piece 170 has a circumference of the fastening protrusion 172 formed on a fastening shaft portion of a hollow pipe (pipe) shape on one side of the lower fastening shaft 130 of the abutment 120, similar to the structure of FIG. 5. When the abutment 120 is pushed into the shaft hole 112 of the fixing body 110 by obtaining an elastic force by forming a cutout 176a having a “∩” shape, the fastening protrusion 172 of the elastic fastening piece 170 is provided. ) Is flexibly elastically bent into the hollow tube (pipe) due to the "∩" shaped cutout 176a, and returns to its original position when the abutment reaches its final position, the fastening groove formed on the inner surface of the fixture shaft hole ( The coupling is elastically coupled to the locking groove 162 of the concave ring-shaped structure of 160.

In addition, the engaging groove 162 of the ring-shaped structure is formed to extend the upper and lower predetermined lengths 164, respectively, when chewing food, the fastening protrusion 172 of the abutment 120 is an extension of the engaging groove 162. It moves up and down within 164, and allows the abutment 120 to make a vertical movement of the vertical gap d through the coil spring elastic part 140.

Therefore, in such a structure, when the abutment 120 is pushed into the shaft hole 112 of the fixing body 110, the fastening protrusion 172 is fastened by the elastic force of the elastic fastening piece 170 itself. It is elastically fastened by being engaged to the engaging groove 162 of the, and in the state in which the abutment 120 and the fixed body 110 is coupled, as shown in Figure 6b, when chewing food, the abutment 120 Due to the coil spring elastic portion 140 to achieve the vertical movement of the vertical gap (d) up and down, a buffer effect can be obtained.

On the other hand, the present invention may be made of another modified structure, as shown in FIG.

That is, the present invention forms a shaft hole 112 in the axial direction at the top and the fixing body 110 is placed in the alveolar bone, and the lower fastening shaft 130 is inserted in the longitudinal direction in the shaft hole 112 of the fixing body 110 ) And abutment 120 made of an upper mounting portion 100 to which the prosthesis 122 is fixed.

In addition, the present invention is the coil spring elastic portion 140 of the coil shape configured to buffer the vertical engagement force or the lateral pressure applied to the abutment 120 to the lower fastening shaft 130 of the abutment 120 and the fixture On one side of the fastening groove 160 formed in the longitudinal direction of the engaging groove 162 in the circumferential direction portion on the inner surface of the shaft hole 112, and the lower fastening shaft 130 of the abutment 120 Elastic fastening projecting in the longitudinal direction of the abutment 120 of the fastening projection 172 corresponding to the engaging groove 162 of the fastening groove 160 due to the incision on the hollow shaft (pipe) -shaped fastening shaft portion It is a structure including a piece 170.

Here, the coil spring elastic portion 140 is made of a coil spring 142 formed integrally by processing the upper side of the fastening shaft 130 of the hollow tube (pipe) shape, the lower portion of the elastic fastening 170 It is formed, the elastic fastening piece 170 is "⊂ around the fastening protrusion 172 formed on the fastening shaft portion of the hollow tube (pipe) shape on one side of the lower fastening shaft 130 of the abutment 120 It is a structure which obtains elastic force by forming "-shaped cutout 176b."

Therefore, in such a deformed structure, when the abutment 120 is pushed into the shaft hole 112 of the fixing body 110 to the end and rotated in the circumferential direction, the fastening protrusion 172 of the elastic fastening piece 170 is It is elastically bent into the hollow tube by the cut-out portion 176b, and when the abutment reaches its final position, it returns to its original position in the concave longitudinal locking groove 162 of the fastening groove 160. The coupling is made and the abutment 120 is prevented from rotating in the circumferential direction in the fixture 110.

In addition, in the state in which the abutment 120 and the fixture 110 is coupled in this way, as shown in Figure 8a, when chewing food, the abutment 120 through the coil spring elastic portion 140 of the upper side The space allowing the vertical movement of the vertical constant gap d is allowed.

And, as shown in Figure 8b, the coil spring elastic portion 140 is made of a coil spring 142 integrally formed by processing the lower side of the lower fastening shaft 130 of the abutment, It may have a structure in which an elastic fastening piece 170 is formed on a fastening shaft portion of a hollow tube (pipe) shape on the top.

The elastic fastening piece 170 is similar to the structure of FIG. 7, around the fastening protrusion 172 formed on the fastening shaft portion of the hollow tube (pipe) shape of the lower fastening shaft 130 of the abutment 120. When the abutment 120 is pushed all the way into the shaft hole 112 of the fixed body 110 to the end by forming an indented portion 176b of the “⊂” type and rotating in the circumferential direction, the elastic fastening piece ( The fastening protrusion 172 of 170 is flexibly elastically bent into the hollow tube by the indentation 176b, and when the abutment reaches the final position, the fastening protrusion 172 returns to its original position and the fastening groove 160 The coupling is elastically coupled to the concave longitudinal locking groove 162.

In addition, even in such a structure, the abutment 120 is prevented from rotating in the circumferential direction in the fixed body 110, the longitudinal locking groove 162 is formed up and down larger than the vertical length of the fastening protrusion 172. Since the extension portion 164 of a predetermined length is formed, when chewing food, the fastening protrusion 172 of the abutment 120 moves up and down within the extension portion 164 of the locking groove 162, the coil spring The elastic portion 140 allows the abutment 120 to allow space for vertical movement of the vertical gap d.

And, the present invention, unlike the above, as shown in Figure 8c, the coil spring elastic portion 140 is made of a coil spring 142 formed integrally by processing the upper side of the abutment lower fastening shaft 130 At the bottom thereof, an elastic fastening piece 170 is formed, and the elastic fastening piece 170 is formed around the fastening protrusion 172 at one side of the lower edge of the lower fastening shaft 130 of the abutment 120. A mold cutout 176c is formed to obtain elastic force.

Therefore, when the abutment 120 is pushed into the shaft hole 112 of the fixing body 110 and rotates in the circumferential direction, the fastening protrusion 172 of the elastic fastening piece 170 is the "a" shaped cutout. When the abutment is elastically bent by 176c and reaches the final position, the abutment may return to its original position and may be coupled to the concave longitudinal locking groove 162 of the fastening groove 160 to perform the fastening.

Accordingly, in such a structure, when the abutment 120 is pushed into the shaft hole 112 of the fixing body 110 and rotated in the circumferential direction, the fastening protrusion 172 of the fastening piece 170 is “a”. While being elastically curved by the incision 176c of the mold, the coupling is coupled to the recessed groove 162 in the concave longitudinal direction of the fastening groove 160, and thus the abutment 120 and the fixture 110 are thus fastened. In the coupled state, as shown in Figure 8c, when chewing the food, the abutment 120 allows a space to achieve the vertical movement of the vertical gap (d) up and down in the coil spring elastic portion 140 .

Unlike the above, the present invention may have a structure as shown in FIGS. 9A and 9B. That is, in the present invention, in the abutment where the elastic fastening part is provided at the lower end of the lower fastening shaft part 130 and the coil spring elastic part 140 is formed thereon, the outer diameter of the upper coil spring elastic part is larger than the outer diameter of the lower elastic fastening part. By obtaining the step portion 180 is a structure that does not affect the lower elastic fastening portion when the abutment is impacted by the occlusal force.

In addition, the present invention may be made of another modified structure as shown in FIG. That is, the present invention forms a shaft hole 112 in the axial direction on the upper and the lower fastening shaft 130 is inserted in the longitudinal direction in the shaft hole 112 of the fixed body 110 and the fixed body 110 is placed in the alveolar bone. The abutment 120 includes the upper mounting portion 100 to which the portion and the prosthesis 122 are fixed.

In addition, the present invention forms a first coil spring elastic portion 141a, a second coil spring elastic portion 141b on the lower fastening shaft 130 of the abutment 120 and between the first and second coil spring elastic portions It is a structure provided with an elastic fastening part.

The present invention may be made of another modified structure as shown in FIG. 11. The present invention may be made of another modified structure as shown in FIG. The present invention can be filled with a non-metallic elastic material in the spiral coil spring elastic portion.

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, the shape of the cutout portion of the elastic fastening piece that performs the function of the fastening portion is not limited to the above-described structure, but may be formed of another polygonal shape. In addition, the shape and size of the fastening protrusion and the fastening groove may be made in another form. And also it can form a polygon for preventing the abutment rotation on a predetermined portion of the lower fastening shaft portion and the inner surface of the shaft hole of the fixture. Nevertheless, such simple design modifications or variations will be made clear in advance that all obviously fall within the scope of the present invention.

Claims

In the dental implant comprising an abutment formed in the axial direction in the upper portion, the abutment is inserted into the alveolar bone and the abutment portion is inserted into the shaft hole of the fixture and the abutment and the upper mounting portion is mounted to the prosthesis. In

The dental implant, characterized in that the abutment is provided with a spiral coil spring elastic portion configured to buffer the occlusal force applied to the prosthesis.
The dental implant according to claim 1, wherein the coil spring elastic part is made of a coil spring formed integrally by processing the lower fastening shaft part of the abutment.
According to claim 1, wherein the abutment is formed on the lower end of the lower fastening shaft portion of the abutment and the corresponding fastening portion formed on the inner surface of the fixed shaft hole complementary elastically coupled to the male and female complementary to form a spiral coil spring elastic portion thereon. A dental implant characterized by the above.
4. The method of claim 3, wherein the size of the upper coil spring elastic part is larger than the outer diameter of the lower elastic fastening part so as to have a stepped portion so that the impact is not transmitted to the lower elastic fastening part when the abutment is impacted by the bite force. Dental implants, characterized in that the elastic fastening portion to be protected from the impact of the occlusal force.
According to claim 1, wherein the abutment is formed on the lower end of the abutment shaft fastening portion of the spiral coil spring elastic portion and formed on the upper portion of the elastic fastening portion that is elastically complementary to the corresponding coupling portion formed on the inner surface of the fixed shaft shaft hole. Dental implants.
Dental for forming a axial hole in the upper portion and the abutment consisting of a fastener to be implanted in the alveolar bone and a lower fastening shaft portion inserted into the shaft hole of the fixture in the longitudinal direction and the upper mounting portion to which the prosthesis is mounted. In the implant,

A first coil spring elastic part is formed at a lower end of the lower fastening shaft part of the abutment, and an elastic fastening part which is elastically complementarily elastically coupled with a corresponding fastening part formed at an inner surface of the fixing shaft hole is formed thereon, and a second coil spring elastic part is formed thereon. Dental implants, characterized in that the forming part.
7. The dental implant according to claim 3 or 6, wherein the abutment elastic fastening portion is a fastening leg type or an elastic fastening type made of various incisions formed on a fastening shaft of a hollow tube (pipe) shape.
Dental for forming a axial hole in the upper portion and the abutment consisting of a fastener to be implanted in the alveolar bone and a lower fastening shaft portion inserted into the shaft hole of the fixture in the longitudinal direction and the upper mounting portion to which the prosthesis is mounted. In the implant,

A spiral coil spring elastic part configured up to the lower end of the lower fastening shaft to buffer the occlusal force to the lower fastening shaft portion of the abutment; And a fastening portion formed of a fastening protrusion at the distal end of the spiral coil spring elastic portion, and having a structure corresponding to the inner surface of the shaft hole of the fixture.
9. The dental implant of claim 8 wherein the upper and lower outer diameters of the coil spring elastic part are configured differently.
Dental for forming a axial hole in the upper portion and the abutment consisting of a fastener to be implanted in the alveolar bone and a lower fastening shaft portion inserted into the shaft hole of the fixture in the longitudinal direction and the upper mounting portion to which the prosthesis is mounted. In the implant,

And a spiral coil spring elastic portion formed on the upper mounting portion of the abutment.