WO2015093863A1

WO2015093863A1 - Dental implant

Info

Publication number: WO2015093863A1
Application number: PCT/KR2014/012518
Authority: WO
Inventors: 김형우; 김균환; 김선영
Original assignee: 김형우; 김균환; 김선영
Priority date: 2013-12-19
Filing date: 2014-12-18
Publication date: 2015-06-25
Also published as: KR20150072363A; KR101697406B1; WO2015093673A1

Abstract

The present invention relates to a dental implant related 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, the dental implant having a spiral coil-shaped spring elastic part formed in the abutment so as 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-shaped spring elastic part on one side of the abutment. The present invention relates to a dental implant that has been improved to efficiently absorb the vertical bite force or lateral pressure applied to the implant when chewing food, thereby 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 an abutment consisting of an upper mounting portion to be mounted to provide a dental implant having a spiral coil-shaped spring elastic portion formed in the abutment to buffer the occlusal force.

Preferably, the coil-shaped spring elastic portion first drills a vertical hole in the abutment, and then spirally cuts from the outer diameter to the vertical hole using a cutter, or helically cuts from the outer diameter to the inner diameter with the cutter in the reverse order. A vertical hole was formed to form a coil spring structure.

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

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

Preferably, the present invention preferably has 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 has a spiral coil-shaped spring elastic portion formed thereon. Provide dental implants.

In this case, preferably, the outer diameter of the upper coil-like spring elastic part is larger than the outer diameter of the lower elastic fastening part, and thus has 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. Ensure additional bite protection from impact.

In another aspect, the present invention preferably, forming a spiral coil-shaped spring elastic portion at the lowermost end of the abutment lower fastening shaft portion and an elastic fastening portion that is elastically complementary to the corresponding fastening portion formed on the inner surface of the stationary shaft hole on the upper portion thereof. Provide a dental implant.

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 abutment consisting of: a first coil-like spring elastic portion formed on the lowermost end of the abutment shaft portion of the abutment and is elastically complementary to the corresponding coupling portion formed on the inner surface of the fixture shaft hole thereon A dental implant having an elastic fastening portion and a second coil-shaped spring elastic portion formed thereon is provided.

Such a structure can provide the ability to overcome tolerances that inevitably occur during fixing and abutment machining. That is, even if the location of the fastening portion of the abutment and the corresponding fastening position of the fixing body can be precisely fastened by the first coil-shaped spring elastic part formed at the bottom even if a minute numerical inconsistency occurs which is irresistible during machining, . That is, for example, even if the abutment of the abutment is processed to a finer position than the corresponding abutment of the fixture, the first coil-shaped spring elastic part may be compressed and the abutment and the fixture may be fastened by applying appropriate pressure during the abutment.

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 to engage the fixing body A dental implant comprising abutment made of: a spiral coil-shaped spring elastic portion configured to a 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 a fastening portion consisting of a fastening projection formed on the distal end of the spiral coil-like spring elastic portion.

In this case, preferably, the outer diameter of the upper coil-shaped spring elastic portion is formed larger than the outer diameter of the coil-shaped spring elastic portion of the lower side where the fastening portion composed of the fastening protrusions is positioned so that the impact is lowered when the abutment is impacted by the bite force. The fastening portion can be protected from the bite force by preventing it from being delivered to the portion.

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 into the spiral coil-like 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 the dental implant comprising an implant structure having a coil-like spring elastic portion processed in a spiral coil shape to cushion the vertical occlusal force or lateral pressure applied to the prosthesis to 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 of a dental implant according to the present invention, in which a coil-shaped spring elastic part is positioned at an upper side of a lower fastening shaft portion of abutment and an elastic fastening portion of a fastening leg type is located at a lower side thereof. to be.

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 spring 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 an elastic fastening piece is formed by an incision formed on a fastening shaft portion of a hollow tubular (pipe) shape in which a coil-shaped spring elastic portion is located on an upper side from a lower fastening shaft portion of abutment; It is an exploded perspective view showing the structure in which the 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.

6B is a dental implant according to the present invention, in which a coil-shaped spring elastic part is located at the lower side from the lower fastening shaft part of the abutment, and the elastic fastening piece is fastened in a hollow tube (pipe) shape by the incision (b) of the mold. It is a joining sectional view which shows the structure where the elastic fastening part of the type formed on the axial part is located in the upper side.

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

Figure 8c is a dental implant according to the present invention, the coil-shaped spring elastic portion is located on the upper side, the type of elastic fastening piece is formed on the fastening shaft portion of the hollow tube (pipe) shape by the "a" shaped incision ( type) is a sectional view showing the structure in which the elastic fastening portion is located on 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. When the type of elastic fastening portion 9b formed in the position is positioned, and the coil-shaped spring elastic portion is located on the upper portion, the outer diameter size of the upper coil-shaped spring elastic portion is larger than the outer diameter size of the lower elastic fastening portion Exploded perspective view.

10 is a dental implant according to the present invention, wherein the first coil-shaped spring elastic part and the second coil-shaped spring elastic part are positioned above and below an elastic fastening part in which the coil-shaped spring elastic part is engaged with the corresponding fastening portion of the inner surface of the shaft hole. Is an exploded perspective view showing the structure shown.

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

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 showing a structure in which a coil-like spring elastic portion is formed in the 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-like 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 as Coil-shaped spring elastic portion 140 is formed of a coil-shaped spring 142 formed integrally by processing the upper side of the lower fastening shaft 130, the lower portion forms a plurality of legs 152, each of The legs 152 have a structure in which a fastening protrusion 152a is formed at an outer circumferential surface of the lower legs.

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.

In addition, the coil-shaped 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, a wire cutter using an electric discharge, and the like. By using a spiral cutting process as shown in the cross section in Figure 2, it may be formed in the structure of the coil spring (142). As another method, the cutter may be first cut in a spiral shape, and then a vertical hole may be drilled to form a coil spring structure.

That is, the coil-shaped spring elastic portion 140 according to the present invention first drills a vertical hole in the abutment, then spirally cuts from the outer diameter to the vertical hole using a cutter, or spirally from the outer diameter to the portion of the inner diameter with the cutter in the reverse order. After cutting, the vertical hole can be formed to form a coil spring structure. On the other hand, it is obvious that the coil-shaped spring elastic portion can be formed by a 3D printer or the like.

Therefore, in such a coil-shaped spring elastic portion 140 structure in the state in which the abutment 120 is coupled to the fixture 110, the upper mounting portion 100 on which the prosthesis 122 is mounted is the coil-shaped spring elastic portion By 140, the structure can be moved up and down by a predetermined gap (d), and when chewing food using the present invention, it effectively buffers the vertical occlusal force or lateral pressure applied to the implant to feel like a natural tooth Can be obtained.

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

That is, as shown in Figure 3, the coil-shaped spring elastic portion 140 is made of a coil-shaped spring 142 formed integrally by processing the lower side of the fastening shaft 130, a number of the outer side of the upper Legs 152 of the legs, each of the legs 152 has a fastening protrusion 152a is formed on the outer peripheral surface of the bottom, the fastening grooves formed corresponding to the inner surface of the shaft hole 112 of the fixture 110 ( It is elastically coupled to 152b) may be a structure in which the detachment between the fixture 110 and the abutment 120 is made.

That is, such a structure is made of an ultrasonic processor or a super drill using an electric discharge to form a hollow tube by drilling a vertical hole in the lower fastening shaft and using a wire cutter using the electric discharge on the lower side of the lower fastening shaft 130. By cutting in a spiral shape as shown in the cross section in Figure 4, to form a structure of the coil spring (142). Of course, as described above, after cutting spirally with a cutter in the reverse order, a vertical hole may be drilled to form a coil spring structure.

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-shaped spring elastic portion 140 allows a space to achieve the vertical movement of the vertical gap (d).

Therefore, when chewing food in the structure of the coil-shaped spring elastic portion 140, the abutment 120 can be buffered over a predetermined gap (d) up and down through the coil-shaped spring elastic portion 140, the implant By effectively buffering the vertical occlusal force or lateral pressure applied to it, a natural tooth-like feeling can be obtained.

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.

The coil-shaped spring elastic part 140 and the fixed body 110 are configured to cushion the vertical engagement force or the lateral pressure applied to the abutment 120 to the lower fastening shaft 130 of the abutment 120. On the fastening shaft portion of the hollow tube (pipe) shape of the fastening groove portion 160 and the lower fastening shaft 130 of the abutment 120 formed in the circumferential direction the recessed groove 162 is formed on the inner surface of the shaft hole 112. It includes an elastic fastening piece 170 provided by various types of incisions formed in the peripheral portion of the fastening protrusion 172 coupled to the engaging groove 162 of the fastening groove 160 by the various types of incisions Structure.

Here, the coil-shaped spring elastic portion 140 is formed of a coil-shaped spring 142 formed integrally by processing the upper side of the lower fastening shaft 130, the lower portion of the hollow tube (pipe) of the fastening shaft An elastic fastening piece 170 provided at the lift 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-shaped spring elastic portion 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-shaped spring elastic portion 140 is made of a coil-shaped spring 142 formed integrally by processing the lower side of the lower fastening shaft 130 of the abutment and 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 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-shaped 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-shaped spring elastic portion 140 to achieve the vertical movement of the vertical gap (d), it is possible to obtain a buffer effect.

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 a coil-shaped spring elastic portion 140 and the fixed body 110 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. The hollow groove is formed 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. An elastic fastening piece protruding in a longitudinal direction of the abutment 120 from the fastening protrusion 172 corresponding to the locking groove 162 of the fastening groove 160 due to a cutout on a fastening shaft portion of a pipe (pipe) shape ( 170).

Here, the coil-shaped spring elastic portion 140 is made of a coil-shaped 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 piece ( 170 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 in which an elastic force is obtained by forming a cutout 176b of a "⊂" type.

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 as described above, as shown in Figure 8a, when chewing food, the abutment 120 is coiled spring elastic portion 140 of the upper side The space allows the vertical movement of the vertical gap through the vertical movement (d).

And, as shown in Figure 8b, the coil-shaped spring elastic portion 140 is made of a coil-shaped spring 142 formed integrally by processing the lower side of the lower fastening shaft 130 of the abutment and 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 thereof.

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, and the coil shape The spring 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-shaped spring elastic portion 140 is formed by processing the upper side of the abutment lower fastening shaft 130 integrally formed coil-shaped spring 142 It is made of, the lower portion of the elastic fastening piece 170 is formed, 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. An elastic force is obtained by forming an incision 176c of a type.

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 food, the abutment 120 allows a space to achieve the vertical movement of the vertical gap (d) up and down in the coil-shaped spring elastic portion 140 do.

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

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 the first coil-shaped spring elastic portion 141a, the second coil-shaped spring elastic portion 141b on the lower fastening shaft 130 of the abutment 120 and the first and second coil-shaped spring elasticity It is a structure provided with an elastic fastening part between parts.

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-shaped 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. In addition, it is also apparent that the upper abutment portion and the lower fastening shaft portion formed with the coil-shaped spring elastic portion may be separated and used in combination with a fitting or other various fastening methods. 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

And the spiral column is provided with a spiral coil-shaped spring elastic part configured to cushion the bite force applied to the prosthesis.
The method of claim 1, wherein the coil-like spring elastic portion first drills a vertical hole in the abutment, and then spirally cuts from the outer diameter to the vertical hole using a cutter or spirally cuts from the outer diameter to the inner diameter with the cutter in reverse order. After that, a dental implant, characterized in that to form a coil spring structure through the vertical hole.
The dental implant according to claim 1, wherein the coil spring elastic portion is formed of a coil spring formed integrally by processing the lower fastening shaft portion of the abutment.
According to claim 1, wherein the lower portion of the lower fastening shaft portion is formed with an elastic fastening portion that is elastically complementary to the corresponding fastening portion formed on the inner surface of the stationary shaft hole, and a spiral coil-shaped spring elastic portion formed on the upper portion Dental implant, characterized in that.
5. The method of claim 4, wherein the outer diameter of the upper coil-like spring elastic portion is larger than the outer diameter of the lower elastic fastening portion so as to have a stepped portion. Dental implants, characterized in that the elastic fastening portion is to be protected from the bite force shock.
According to claim 1, wherein the abutment is formed on the lower end of the abutment shaft of the abutment to form a spiral coil-like spring elastic portion and the upper portion formed an elastic fastening portion that is elastically complementary to the corresponding coupling portion formed on the inner surface of the fixed shaft shaft hole. A dental implant characterized by the above.
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-shaped 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 on the inner surface of the fixed shaft hole on the upper part thereof, and has a second coil shape thereon. Dental implant, characterized in that the spring elastic portion formed.
8. The dental implant according to claim 4 or 7, wherein the abutment elastic fastening portion is a fastening leg type or an elastic fastening type made of various incisions formed in the hollow tubular fastening shaft portion.
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-shaped spring elastic portion provided at 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-shaped spring elastic portion, and having a structure corresponding to the inner surface of the shaft hole of the fixture.
10. The dental implant of claim 9 wherein the upper and lower outer diameters of the coil spring resilient portion 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-shaped spring elastic portion formed on the upper mounting portion of the abutment.