KR20080049378A - Implant unit using dentistry - Google Patents

Abstract

A shock-absorbing implant unit is provided to lessen load and shock created when an implant wearer chews food through a shock absorbing layer, and to reduce damage on the alveolar bone and to increase lifespan of the implant. An implant unit comprises: an outer fixture(110) coupled to the alveolar bone; a shock absorbing layer(120) made of synthetic resin and disposed between the outer fixture and an inner fixture(130); and a separation preventing ring(140) attached to the upper inner diameter of the outer fixture to prevent separation of the inner fixture from the outer fixture. The outer fixture further includes an outer layer(111) to be coupled to the alveolar bone, a hollow(113) into which the inner fixture is inserted, and a ring connecting portion(115) to which the separation preventing ring is fastened.

Description

Shock Absorbing Implant Unit {IMPLANT UNIT USING DENTISTRY}

1 is an exploded perspective view showing a conventional implant unit.

Figure 2 is a cross-sectional view showing the internal structure of a conventional implant unit.

Figure 3 is a perspective view showing a shock absorbing implant structure according to the present invention.

Figure 4 is an exploded perspective view for explaining the overall structure of the shock absorbing implant according to the present invention.

Figure 5 is a cross-sectional view for explaining the overall structure of the shock absorbing implant according to the present invention.

Figures 6a to 6b is a cross-sectional view showing a double bond structure of the fixture according to the present invention.

Figure 7a is a cross-sectional view for explaining another embodiment of the double bond structure of the fixture according to the present invention.

Fig. 7B is a plan view showing the bottom shape of the internal fixture in Fig. 7A.

<Description of the symbols for the main parts of the drawings>

100: fixture 110: external fixture

111: outer layer 113: hollow part

115: ring coupling portion 120: shock absorbing layer

130: internal fixture 131: screw hole

133: matching groove 137: anti-rotation protrusion

140: departure prevention ring 200: abutment

210: registration protrusion 220: hollow hole

300: fastening member

The present invention relates to a dental implant, in particular, the fixture is formed in a dual structure of the external fixture and the internal fixture, and the impact absorbing layer is formed therebetween the load and impact when chewing food is the joint site of the implant and alveolar bone It relates to a shock absorbing implant which is intended to be buffered to be delivered to.

In general, artificial teeth are artificially created teeth that are almost identical to human natural teeth in appearance and function, and these artificial teeth are used to replace natural teeth when they are defective by various factors.

In order to replace the natural tooth as the artificial tooth described above, three methods of prosthetic or denture or alveolar bone are required. In the prosthetic, the other natural teeth of the prosthesis must be scraped off. Not only does it cause damage, but its lifespan is not so long as about 10 years.

In addition, in the case of dentures, as well as the damage of the natural teeth and can also be taken out of the use process, as well as give the user a feeling that has a foreign body in the mouth there is a problem inconvenient to use. Therefore, in the case of the prosthetics and dentures, the utilization rate is decreasing.

On the other hand, when artificial teeth are implanted in the alveolar bone, they are hardly distinguishable from natural teeth after they are completed without damaging other natural teeth around them. The implant unit is used as a structure for embedding such an artificial tooth in the alveolar bone.

1 is an exploded perspective view showing a conventional general implant unit, Figure 2 is a cross-sectional view showing the internal structure of a conventional implant unit.

The conventional implant unit as shown in the figure is largely composed of a fixture (10), an abutment (20) and a screw (30).

The implant unit having such a configuration may be classified into an external type and an internal type according to the coupling type of the fixture 10 and the abutment 20. The difference between the two types is as follows. The case where the cross section of the coupling portion of the fixture 10 protrudes to the outside is called an external type, and the case where the cross section of the coupling portion is recessed inside is called an internal type.

This classification is substantially identical in configuration and operation with only differences in shape. 1 to 2 illustrate an implant unit of an external type.

First, the fixture 10 is directly embedded in the alveolar bone (jawbone) to perform a kind of pillar role, the outer diameter surface of the body is formed with a screw thread 11 for coupling into the alveolar bone, the top of the hexagonal head ( 13 is formed, the fastening hole 15 is formed in the vertical direction in the center of the head (13).

In this case, the screw 30 is fastened to the fastening hole 15 at the upper end of the fixture 10 in a manner of fixing the abutment 20 to the fixture 10.

Next, the abutment 20 serves as a support for mounting an artificial tooth, and at the bottom, a hexagonal guide groove 21 is formed to face the hexagon head 13 of the fixture 10. And, the upper end is formed with a hollow hole 23 through which the screw 30 is axially penetrated.

Then, the screw 30 is formed in the upper head of the driver slot groove of the straight or cross-shaped or hexagonal wrench seat groove is formed.

Referring to the operation of the prior art consisting of the above configuration as follows.

First, the fixture 10 is coupled to the alveolar bone (jawbone). At this time, the alveolar bone is in a state of being holed a little smaller than the outer diameter of the fixture (10).

Next, the abutment 20 is positioned on the fixture 10. At this time, the hexagonal head 13 of the upper portion of the fixture 10 and the hexagonal guide groove 21 inside the lower portion of the abutment 20 are guided to each other to be seated. Thus, the abutment 20 located on the upper portion of the fixture 10 is not rotated.

Next, the screw 30 is penetrated into the hollow hole 23 of the abutment 20 so that the thread of the screw 30 is fastened to the fastening hole 15 of the fixture 10, thereby fixing the fixture 10. ) And the abutment 20 to form a fully coupled state is prevented.

After fixing the implant consisting of the fixture 10, the abutment 20, and the screw 30 to the alveolar bone in this manner, the abutment 20 is covered with an artificial tooth, thereby artificially damaging the patient's permanent tooth. It will be fed with teeth.

However, the conventional implant unit as described above has a problem in that the coupling portion of the fixture 10 and the alveolar bone is damaged due to the repeated load and impact caused by the patient chewing and ingesting food.

As the joint 10 of the fixture 10 and the alveolar bone are broken as described above, the tightening force of the fixture 10 with the alveolar bone is reduced so that the artificial tooth is shaken, so that the patient cannot chew food properly, or the damaged part is inflamed. There was a problem that the patient suffers mentally and physically, such as causing the failure of the implant, there was a problem that the dental cost is excessively generated by recombination procedure by replacing the implant as described above.

In addition, since the conventional implant unit is directly provided to the alveolar bone without a separate buffer structure, there is a risk of breaking the coupling site by transferring the masticatory pressure to the alveolar bone, which is to connect the natural teeth and the implant to form a prosthesis. In spite of the fact that the natural teeth are flexible, the implant is firmly fixed, so that the load is concentrated on the fixed part, and thus the breakage occurs easily.

In addition, the prior art has a problem in that it is difficult to chew hard food, because in the structure of interconnecting multiple implants, in particular, the dispersion of chewing pressure may not be smoothly concentrated in one place.

An object of the present invention for solving the problems of the prior art as described above is to form a fixture in a dual structure of the external fixture and the internal fixture, forming a shock absorbing layer therebetween the load and impact when chewing food The present invention provides a shock-absorbing implant that allows the delivery of the alveolar bone to be buffered to reduce alveolar bone damage while allowing the implant to be used semi-permanently.

Impact absorbing implant according to the present invention for achieving the object of the present invention as described above in the fixture of the dental implant, the fixture is an external fixture coupled to the alveolar bone; An impact absorbing layer formed to a predetermined thickness between the external fixture and the internal fixture; An inner fixture installed inside the outer fixture with the shock absorbing layer therebetween; And an anti-separation ring coupled to the upper inner diameter of the outer fixture to prevent the inner fixture from being separated from the outer fixture.

Here, the outer fixture forms an outer layer to be coupled to the alveolar bone around the outer periphery, the inner center forms a hollow for installing the shock absorbing layer and the inner fixture, the top of the hollow portion for coupling the separation prevention ring It is characterized by forming a ring coupling portion.

The impact absorbing layer is formed by coating an elastic body of a synthetic resin material at a predetermined thickness on the inner wall of the hollow part of the outer fixing body.

In addition, the impact absorbing layer is formed by coating an elastic body of a synthetic resin material a predetermined thickness on the outer wall of the inner fixing body.

In addition, the inner fixing body is characterized in that a screw hole is formed in the inner center, and the upper end of the screw hole is formed as a matching groove that is matched with the matching protrusion of the abutment.

In addition, it is characterized in that the anti-rotation protrusion is formed by protruding a predetermined thickness to the bottom bottom of the inner fixing body.

In addition, the cross section of the coupling part of the hollow part and the shock absorbing layer and the inner fixture of the outer fixture is characterized in that the polygon.

In addition, the release preventing ring is characterized in that the screw coupling to the inner surface of the ring coupling portion of the outer fixture, or thermal expansion coupling and heat shrink coupling.

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

Figure 3 is a perspective view showing the structure of the shock absorbing implant according to the present invention, Figure 4 is an exploded perspective view for explaining the overall structure of the shock absorbing implant according to the present invention, Figure 5 is an overall shock absorbing implant according to the present invention 6A to 6B are cross-sectional views illustrating a double bond structure of a fixture according to the present invention, and FIG. 7A is a cross-sectional view to explain another embodiment of a double bond structure of a fixture according to the present invention. 7B is a plan view showing the bottom shape of the internal fixture in FIG. 7A.

The shock absorbing implant according to the present invention as shown in the figure is largely directly bonded to the alveolar bone fixture 100, the abutment 200 is axially matched to prevent rotation on the upper end of the fixture 100 And a fastening member 130 for coupling the abutment 200 and the fixture 100.

Here, the fixture 100 is directly embedded in the alveolar bone (jawbone) to perform a kind of pillar role, on the inner surface of the hollow body 113 of the outer fixture 110 and the outer fixture 110 coupled to the alveolar bone. The shock absorbing layer 120 formed to a predetermined thickness, the inner fixing body 130 and the inner fixing body 130 installed inside the outer fixing body 110 with the shock absorbing layer 120 therebetween, the outer fixing body It is composed of a departure prevention ring 140 that is coupled to the upper inner diameter of the outer fixture 110 so as not to be separated from the (110).

At this time, the outer fixing body 110 forms an outer layer 111 to be coupled with the alveolar bone around the outer side, and the hollow portion 113 for installing the shock absorbing layer 120 and the inner fixing body 130 in the inner center. ) And a ring coupling portion 115 for coupling the release preventing ring 140 to the top of the hollow portion 113.

In addition, the shock absorbing layer 120 is manufactured using an elastic body such as a synthetic resin material such as rubber, and as shown in FIG. 4, the shape of the shock absorbing layer 120 is prepared in advance, or the liquid is previously formed in the hollow portion 113 of the external fixing body 110. After injection, the internal fixing body 130 may be combined to naturally penetrate into a gap, and then may be solidified after a predetermined time.

Of course, the shock absorbing layer 120 may coat an elastic body with a predetermined thickness on the inner wall of the hollow part 113 of the outer fixing body 110. Such a coating method may also be formed on the outer wall of the inner fixing body 130.

At this time, the shape of the impact absorbing layer 120 is determined by the shape of the hollow portion 113 of the outer fixing body 110 and the outer shape of the inner fixing body 130, as seen in the exploded perspective view of FIG. 4 to the cross-sectional view of FIG. 6A. It may be manufactured in a hexagonal shape as shown.

Such a polygonal structure is intended to prevent rotation of the inner fixture 130 inserted into the hollow portion 113 of the outer fixture 110.

Of course, such a rotation preventing structure can be obtained through the same concave-convex structure as shown in Figure 6b, it is possible through a similar structure change.

In addition, the inner fixing body 130 has a screw hole 131 is formed in the inner center to mate with the fastening member 300, the upper end of the screw hole 131, the matching protrusion 210 of the abutment 200 ) May be formed as a matching groove 133 for registration.

At this time, the anti-rotation protrusion 137 as shown in Figures 7a to 7b can be formed on the bottom surface of the inner fixing body 130, the anti-rotation protrusion 137 is radial as shown in the same figure It may be manufactured in a branch shape, but is not limited to this shape, it may be produced in a variety of shapes, such as square or hexagon.

Of course, at this time, the opposing groove that is matched with the anti-rotation protrusion 137 may be formed on the bottom of the outer fixing body 110.

In addition, the release preventing ring 140 is coupled to the ring coupling portion 115 formed at the upper end of the outer fixing body 110 so that the inner fixing body 130 and the shock absorbing layer 120 from the outer fixing body 110. It is to be prevented from being separated, as well as a screw coupling method, a thermal expansion coupling or a thermal contraction coupling method using a thermal expansion coefficient between the interference fit method or dissimilar metal may be used.

Next, the abutment 200 is combined with the fixture 100 to serve as a support for mounting an artificial tooth, the matching groove 133 of the fixture 100 at the bottom of the body is formed in a conical shape A matching protrusion 210 is formed to be matched to the upper surface of the body, and a hollow hole 123 through which the fastening member 300 is axially penetrated.

Referring to the operation of the present invention having the above configuration as follows.

First, the fixture 100 is to be coupled to the alveolar bone (jawbone), for this, the fixture 100 is formed between the external fixture 110 and the internal fixture 130, the shock absorbing layer 120 is formed, The departure preventing ring 140 is coupled to the upper end of the outer fixing body 110 to prevent the inner fixing body 130 from being separated.

By forming a polygonal (hexagonal) structure or a concave-convex structure of the coupling end surfaces of the external fixture 110, the shock absorbing layer 120, and the internal fixture 130, axial rotation can be prevented.

Next, the fastening member 300 is penetrated into the hollow hole 230 of the abutment 200 so that the screw thread of the fastening member 300 is screwed to the screw hole 131 of the internal fixing body 130. As a result, the separation between the fixture 100 and the abutment 200 is prevented.

As the present invention having the above-described configuration and operation can be variously modified and changed by those skilled in the art using the various embodiments described above, the true technical scope of the present invention is not limited to the contents described in the detailed description of the specification, but the patent claims It should be determined by the scope.

The present invention is a double structure of the external fixture and the internal fixture to form a fixture, the shock absorbing layer is formed therebetween the load and impact when chewing food to buffer the transmission of the alveolar bone to damage the alveolar bone By reducing the number of implants, the service life of the implant is extended, and the range of application of the implant is expanded, such as connecting several natural teeth and the implant, thereby expanding the range of treatment options of patients and improving the quality of dental care. Inflammation due to injury and secondary procedures have the effect of preventing the patient from suffering physical and mental pain.

Claims (8)

In the fixture of dental implants, The fixture 100 includes an external fixture 110 coupled to the alveolar bone; An impact absorbing layer (120) formed between the outer fixture (110) and the inner fixture (130) to a predetermined thickness; An inner fixture 130 installed inside the outer fixture 110 with the shock absorbing layer 120 therebetween; And A separation prevention ring 140 coupled to the upper inner diameter of the outer fixing body 110 so that the inner fixing body 130 is not separated from the outer fixing body 110; Shock-absorbing implant comprising a. The method of claim 1, The external fixture 110, The outer layer 111 is formed to be coupled to the alveolar bone on the outer circumference, and the hollow portion 113 is formed at the inner center to install the shock absorbing layer 120 and the inner fixing body 130. ) The shock absorbing implant, characterized in that to form a ring engaging portion 115 for the separation prevention ring 140 is coupled to the top. The method of claim 1, The shock absorbing layer 120 is a shock absorbing implant, characterized in that formed by coating a predetermined thickness of the elastic body of the synthetic resin material on the inner wall of the hollow portion 113 of the outer fixing body (110). The method of claim 1, The shock absorbing layer 120 is a shock absorbing implant, characterized in that formed by coating a predetermined thickness of the elastic body of the synthetic resin material on the outer wall of the inner fixing body (130). The method of claim 1, Impact absorbing implant, characterized in that the upper end of the internal fixture 130 and the abutment 200 to be matched. The method of claim 5, Shock absorbing implant, characterized in that the anti-rotation projections (137) are formed by protruding a predetermined thickness to the bottom bottom of the inner fixing body (130). The method of claim 1, Impact absorption implant, characterized in that the cross section of the coupling portion of the hollow portion 113 and the shock absorbing layer 120 and the inner fixing body 130 of the outer fixing body 110. The method of claim 1, Shock-absorbing implant, characterized in that for screwing the separation prevention ring 140 to the inner surface of the ring coupling portion 115 of the outer fixture 110, thermal expansion coupling and heat shrink coupling.

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