KR20170029792A

KR20170029792A - Dental implant

Info

Publication number: KR20170029792A
Application number: KR1020150126825A
Authority: KR
Inventors: 김기은
Original assignee: 김기은
Priority date: 2015-09-08
Filing date: 2015-09-08
Publication date: 2017-03-16

Abstract

A tooth implant according to the present invention is a tooth implant comprising an abutment in which a fixture for a tooth is fixed on a gum bone and an artificial tooth is fixed to the fixture, wherein the abutment fixing bolt A bolt is inserted into the hollow portion of the abutment fixing bolt so that the male screw portion of the abutment fixing bolt is fastened to the female screw portion formed inside the fixture and a loosening preventing bolt for preventing the loosening of the abutment fixing bolt is formed in the hollow portion of the abutment Wherein an inclined insertion portion is formed at an upper end portion of the fixture and an inclined insertion portion inserted into the inclined insertion groove portion of the fixture is formed at a lower end portion of the abutment, A polygonal anti-rotation portion is formed on the inclined insertion portion of the fixture, A polygonal inner surface coinciding with the polygonal anti-rotation portion of the abutment is formed, and the material of the loosening prevention bolt for preventing the loosening of the abutment fixing bolt is made of a soft metal material or a synthetic resin material rather than the material of the abutment do.
Therefore, according to the present invention, since the inclined insertion portion of the abutment is inserted into the inclined insertion groove portion of the fixture, the abutment can be stably fixed against the external force applied to the abutment, The abutment bolt is fixed to the fixture by the bolt for securing the bolt with the bolt and the bolt for the loosening, and the material of the bolt for the bolt is made of soft synthetic resin rather than the material of the abutment. Therefore, Even if it interferes with loosening the bolt, it is easy to break the loosening bolt when loosening the loosening bolt. Therefore, it is only necessary to replace the loosening prevention bolt so that the maintenance work can be performed conveniently without damaging or deforming the other components And so on.

Description

DENTAL IMPLANT

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a tooth implant, and more particularly, to a tooth implant that not only firmly fixes an abutment installed in a fixture, but also can perform maintenance work conveniently.

In general, plastic surgery or dentistry is an artificial tooth substitute that should be replaced with human teeth. After fixation by fixing a tooth fixture to a patient's gum bone, an abutment combining an artificial tooth is installed in a fixture do.

For example, in the past, a technique filed by the Japanese Patent Application No. 10-2006-0026409 has been developed, because the compressive and tensile stresses are repeatedly applied to the teeth in the oral cavity, thereby reducing the bonding force between the abutment and the fixture, In order to prevent a phenomenon of shaking or loosening, an abutment is placed on the upper end of the fixture, and the abutment is fixed to the fixture by using an abutment screw. To prevent the abutment screw from loosening, Thereby preventing loosening of the abutment screw.

However, conventionally, since the upper end portion of the fixture is abutted by the abutment screw, the force applied from the side of the abutment causes a looseness between the fixture and the abutment screw, so that the coupling force between the fixture and the abutment There is a drawback that the abutment screw that combines the fixture and the abutment may be damaged.

Of course, conventionally, a polygonal protrusion is formed at the upper end of the fixture and a groove corresponding to the protrusion of the fixture is formed at the lower end of the fixture to improve the resistance against the rotational force of the abutment. However, It can be said that the resistance against losing force is insufficient.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the conventional art as described above, and it is an object of the present invention to provide a method of fixing an abutment installed on a fixture by inserting a lower circumferential surface of the abutment on the upper side of the fixture. And an abutment is fixed to the fixture with an abutment fixing bolt and a loosening prevention bolt, so that the maintenance work can be conveniently performed.

In order to accomplish the above object, the present invention provides a tooth implant comprising an abutment in which a fixture for teeth is fixed to a gum bone by being fixed and an artificial tooth is attached to the fixture, wherein the abutment fixing bolt And a male screw portion of the abutment fixing bolt inserted into the hollow portion of the abutment is fastened to a female screw portion formed on the inside of the fixture so that a loosening prevention bolt for preventing the loosening of the abutment fixing bolt is inserted into the hollow Wherein an inclined insertion portion is formed in an upper end portion of the fixture and an inclined insertion portion is formed in a lower end portion of the abutment to be inserted into the inclined insertion groove portion of the fixture, Provides a tooth implant.

In addition, a polygonal anti-rotation portion is formed in the inclined insertion portion of the abutment, and a polygonal inner surface coinciding with the polygonal anti-rotation portion of the abutment is formed in the inclined insertion groove portion of the fixture.

Furthermore, the material of the loosening prevention bolt for preventing loosening of the abutment fixing bolt is made of a soft metal material or a synthetic resin material rather than the material of the abutment.

In the tooth implant according to the present invention as described above, since the inclined insertion portion of the abutment is inserted into the inclined insertion groove portion of the fixture, the abutment can be stably opposed to the external force applied to the abutment, There is an advantage that it can be fixed.

In addition, since the abutment bolt and the loosening bolt fix the abutment to the fixture, the material of the loosening prevention bolt is made of soft synthetic resin or the like rather than the material of the abutment. Therefore, the fine particles It is easy to break the loosening prevention bolt when loosening the loosening prevention bolt even if it prevents the loosening prevention bolt from loosening. Therefore, it is possible to replace only the loosening prevention bolt, so that the maintenance work can be conveniently performed without damaging or deforming the other components It can be done.

1 is a partial cross-sectional view showing an example of a tooth implant according to the present invention.
2 is a partial cross-sectional view showing another example of a tooth implant according to the present invention.
FIG. 3 is a partial cross-sectional view of the tooth implant of FIG. 2; FIG.

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

1 to 3 illustrate a tooth implant according to the present invention. The implant includes a tooth fixture 11 fixed to the gum bone 1 and an abutment (not shown) 12 are provided in the fixture 11.

The tooth implant according to the present invention fixes the abutment 12 to the fixture 11 by using the abutment fixing bolt 13 and the abutment bolt 14 is used to fix the abutment 12, Thereby preventing the fixing bolts 13 from being loosened.

That is, a male screw portion 13a is formed at the distal end of the abutment fixing bolt 13, and the abutment fixing bolt 13 is inserted into the hollow portion of the abutment 12, And the tip end of the bolt 13 protrudes to the lower side of the abutment 12.

A male screw portion 13a of the abutment fixing bolt 13 is fastened to a female screw portion formed on the inside of the fixture 11 to prevent the abutment bolt 13 from loosening, 14 are fastened to the female threaded portion 12a formed in the hollow portion of the abutment 12.

It is obvious that the abutment fixing bolt 13 and the loosening prevention bolt 14 are screwed in opposite directions and the unevenness prevention bolt 14 is formed on one surface thereof with a concave / convex portion by a screwing operation or the like.

An inclined insertion portion 12b is formed at the lower end of the abutment 12 to be inserted into the inclined insertion groove portion 11b of the fixture 11. The inclined insertion portion 12b is formed at an upper end of the fixture 11, .

As shown in Fig. 1, even if an external force applied to the artificial teeth 2 is repeatedly generated in a state where the artificial teeth 2 are installed on the gum bone 1, the abutment fixing bolts 13 and the loosening prevention bolts 14 Since the abutment 12 is firmly fixed to the fixture 11 and the inclined insertion groove portion 11b of the fixture 11 supports the inclined insertion portion 12b of the abutment 12, The solid state of the abutment 12 can be maintained for a long time.

In order to remove the abutment 12 for maintenance such as replacing the artificial tooth 2, a hole is drilled downward from the upper side of the artificial tooth 2, and the loosening prevention bolt 14 is unscrewed The abutment 12 and the artificial tooth 2 can be separated from each other by unfastening the abutment fixing bolt 13, and maintenance is very simple.

On the other hand, in the structure shown in FIG. 1, it is difficult to generate an external force that generates a rotational force on the artificial tooth 2 due to the tooth adjacent to the artificial tooth 2, but the contact between the artificial tooth 2 and the adjacent tooth can not be maintained, The artificial tooth 2 can be applied with a rotational force, and the abutment 12 can not be maintained in a solid state.

2, a polygonal anti-rotation portion 12c having a polygonal cross-sectional structure is formed in the inclined insertion portion 12b of the abutment 12, and the inclined insertion groove portion 11b The polygonal inner surface 11c coinciding with the polygonal anti-rotation portion 12c of the abutment 12 is formed.

On the other hand, if holes are formed in the artificial teeth 2 for reasons such as maintenance of the artificial teeth 2 as described above, fine particles generated in the hole drilling operation are transferred to the female thread portions 12a So that the loosening prevention bolt 14 can not be loosened and excessive rotation force is applied to the abutment 12, which makes maintenance work difficult.

In this case, the material of the loosening prevention bolt 14, which prevents the loosening of the abutment fixing bolt 13 from loosening, is made of a metal material or a synthetic resin material that is softer than the material of the abutment 13 .

In particular, it is preferable to form the loosening prevention bolt 14 from a synthetic resin material. Even if fine particles generated when the artificial tooth 2 is pierced prevent the loosening prevention bolt 14 from loosening, the loosening prevention bolt 14 The release preventing bolt 14 can be easily broken and separated, and only the release preventing bolt can be replaced later.

Therefore, the tooth implant according to the present invention can prevent the abutment 12 from being rotated by an external force due to the polygonal rotation preventing portion 12c of the abutment 12 and the polygonal inner surface 11c of the fixture 11 In addition, when the loosening prevention bolt 14 is made of a synthetic resin material, it is possible to replace only the loosening prevention bolt 14 without maintenance of the whole components.

1: gum bone
2: Artificial teeth
11: Fixtures
12: Abortment
13: Abutment fixing bolt
14: Loosening bolt

Claims

A tooth implant for implanting a fixture for a tooth on a gum bone by fixing and fixing an abutment in which an artificial tooth is combined,
The abutment fixing bolt is inserted into the hollow portion of the abutment so that the male screw portion of the abutment fixing bolt is fastened to the female screw portion formed on the inside of the fixture to prevent the abutment fixing bolt from loosening, Is fastened to a female thread formed on a hollow portion of the abutment,
Wherein an inclined insertion groove is formed at an upper end of the fixture and an inclined insertion portion inserted into the inclined insertion groove of the fixture is formed at a lower end of the abutment.

The method according to claim 1,
Wherein a polygonal anti-rotation portion is formed in the inclined insertion portion of the abutment, and a polygonal inner surface coinciding with the polygonal anti-rotation portion of the abutment is formed in the inclined insertion groove portion of the fixture.

The method according to claim 1,
Wherein the material of the loosening prevention bolt for preventing loosening of the abutment fixing bolt is made of a soft metal material or a synthetic resin material rather than the material of the abutment.