KR20090008785A

KR20090008785A - Anti-screwloosening device and improved abutment

Info

Publication number: KR20090008785A
Application number: KR1020070072026A
Authority: KR
Inventors: 김재성
Original assignee: 김재성
Priority date: 2007-07-19
Filing date: 2007-07-19
Publication date: 2009-01-22

Abstract

It is an improved abutment system with internal thread formed in the inner circumferential surface of the thread-unlocking stopper with a thread formed on the outer circumferential surface and a threaded groove for accommodating the screw-unlocking fastener to prevent the fastening screw that couples the fixture and the abutment to each other. .

The screw loosening prevention tool has a hollow in which a screwdriver tip of a straight, cross, or polygonal shape is inserted at the top, and a projection is inserted into the polygon groove of the fixture fastening screwhead at the bottom center.

The thread loosening prevention device has a circular or polygonal cylinder shape, and a thread loosening prevention device having a thread formed on an outer circumferential surface thereof is inserted into the abutment so that the outer thread of the screw loosening prevention device is engaged with and fixed to the inner peripheral thread groove of the abutment. The fastening screw is fastened characterized in that it is configured not to be blocked by the closed bottom projection of the screw loosening prevention.

Description

Anti-screwing and improved abutments for implants {ANTI-SCREWLOOSENING DEVICE AND IMPROVED ABUTMENT}

The present invention relates to an anti-loosening structure of an implant, and more particularly, an implant for fixing and fixing an anti-loosening screw to an inner hollow of an abutment to prevent loosening of a fastening screw that couples a fixture and an abutment to each other. Relates to a screw loosening prevention structure of

In case of permanent tooth damage, dental implant technology for embedding artificial teeth in alveolar bone is widely used. The implant is coupled to the fixture 10 through the fixture 10 and fastening screw 20 embedded in the alveolar bone as shown in FIGS. 1 and 2 and exposed to the abutment 30 and the outside. It is composed of an artificial tooth 40 fixed to the butt (30).

Referring to Figure 2 in more detail with respect to the conventional implant, the fixture 10 is embedded in the alveolar bone has a predetermined depth screw groove 11 is drilled therein, the abutment 30 is It is hollow in shape and the mounting protrusion piece 31 protrudes inward at the lower end. Therefore, when the fastening screw 20 is inserted into the internal hollow of the abutment 30, the fastening nut 20 has its head part seated on the seating protrusion 31 of the abutment and the bolt part of the abutment 30 Protruding downward, when the bolt portion of the fastening screw 20 is inserted into the screw groove 11 of the fixture 10 in this state, the fixture 10 and the abutment 30 via the fastening screw 20. Are combined with each other.

Here, the head portion of the fastening screw is formed, for example, a square groove 21, such as a hexagonal groove is formed so that it can be coupled to the square lens.

However, such a conventional implant is a phenomenon that the fastening screw 20 is loosened from the fixture 10 when the artificial tooth is continuously used. When the fastening screw is loosened from the fixture, the abutment and fixture fastening force weakens, and the artificial tooth shakes, and it is necessary to replace it with a new implant. There was a problem.

The present invention has been made to solve the above problems, an object of the present invention is to provide a screw loosening prevention structure of the implant that can prevent the fastening screws that couple the fixture and abutment to each other. The object of the present invention is composed of an abutment (30) exposed to the outside coupled to the fixture through the fixture (10) and fastening screw 20 embedded in the alveolar bone and the artificial tooth fixed to the abutment In the implant, a thread groove 150 is formed on the inner surface 112 of the abutment 30, and a threaded thread 140 is formed on the outer circumferential surface of a thread 140 corresponding to the thread groove of the abutment. Fastening fastened to the fixture by inserting 110 into the abutment 30 so that the thread 140 of the screw loosening stopper 110 is fixed to the screw groove 150 of the abutment 30. It can be achieved by providing a screw loosening prevention structure of the implant, characterized in that the screw is configured not to be blocked by the closed bottom of the screwing loosening stop (110). At this time, the screw loosening stop 110 is a hollow 21 is formed in the top of the screwdriver end portion, such as a straight, cross, or polygonal, star shape can be inserted at the top and the bottom of the polygon groove of the fixture fastening screwhead A projection 111 in the form of a cylinder inserted into the 21 is formed.

The screw thread 140 formed on the outer circumferential surface of the screw loosening prevention member 110 is formed as one of the screw thread 140 locked when turned to the right or the thread thread 140 locked when turned to the left. In particular, the screw thread 140 that is turned to the left has a general implant fastening screw to the right locking screw so that the screw fastening direction becomes opposite to the loosening direction of the implant fastening screw, thereby maximizing the screw loosening prevention effect.

1 is a view for explaining a conventional implant procedure,

2 is a cross-sectional view of a conventional implant,

Figure 3 is a full sectional view of the implant applied to the loosening screw according to the present invention,

4 is a perspective view of the screw loosening prevention tool,

5 is a sectional perspective view of an improved abutment in which a screw groove is formed on an inner circumferential surface thereof.

Claims

In the implant consisting of an abutment exposed to the outside and fixed to the abutment coupled to the fixture through a fixture embedded in the alveolar bone and a fastening screw, a screw groove is formed on an inner surface of the abutment. In the upper part, a hollow of one of the date, cross, star shape, and polygon for the screwdriver is formed, and in the center of the lower part, a projection is inserted into the polygon groove of the fixture fastening screw head, and the outer peripheral surface of the screw groove of the abutment is formed. A screw threaded to the fixture is inserted into the abutment by inserting a cylinder-shaped thread lock prevention member having a thread formed therein into the abutment and fixing the thread of the thread lock prevention tool to the internal threaded groove of the abutment. Screw loosening prevention and improved type of implant, characterized in that it is configured to not be blocked by the closed bottom Abutment.

The method of claim 1,

The screw thread formed on the outer circumferential surface of the screw loosening prevention device and the screw groove on the inner circumferential surface of the improved abutment are formed in either the right locking or the left locking direction.

The method of claim 1,

The screw loosening prevention device and the improved abutment, characterized in that at least one slit formed by cutting the predetermined length from the top to the bottom side of the screw loosening protection.