KR20150006118A - Anchor fixture for dentist implant - Google Patents

Abstract

In the present invention, provided is an anchor type fixture for dental implant, which has a structure to be accurately inserted in positions. According to an embodiment of the present invention, a fixture for dental implant which is embedded in alveolar bone after procedure comprises a body having a round cross section in a certain length; a screw groove for assembling an abutment which is installed on upper center part of the body to assembly the abutment; a plurality of bone bonding connection parts which have a certain interval on the outer circumference of the body and are separated; and bone bonding connection grooves which are formed between the bone bonding connection parts wherein the bone bonding connection parts comprise a protrusion for preventing the separation of an upper part; a lower taper surface; and an edge part installed on the boundary between the protrusion for preventing the separation of the upper part and the lower taper surface.

Description

Anchor fixture for dentist implant of dental implant.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixture of a dental implant, and more particularly to an anchor fixture of a dental implant having a structure that is inserted into an accurate position.

In general, implants refer to a replacement that restores when the original tissue is lost, but in dentistry it refers to a series of procedures for implanting artificial teeth.

Implant surgery is a first-line procedure in which a fixture (artificial root) is planted in the alveolar bone (jawbone), in which the tooth is removed and the gum is cut to plant the fixture. Thereafter, after covering the gum, the fixture has a bonding period in which it coalesces with the jawbone. Next, I have a second procedure to expose the abutment outside the trough. After the second procedure, an artificial tooth is prepared.

In the first procedure, the fixture is made of titanium or the like which has no rejection reaction to the human body to replace the lost root (root). The fixture is a portion to be placed in a drill hole formed in the alveolar bone using a drill or the like at a position where the implant is performed, and serves as an artificial tooth root. Therefore, the fixture must be firmly fixed to the alveolar bone.

Thus, a screw thread is formed on the outer surface of the fixture so as to be firmly engaged with the inner wall portion of the alveolar bone forming the drill hole. In this case, the screw part is easy to insert due to the continuous thread structure, but has a drawback that it can not be pulled out or positioned.

As a background of the present invention, Korean Patent Laid Open Publication No. 10-2012-0118607 proposes a dental implant. An abutment for supporting the artificial crown; An abutment member having an engaging groove formed in an axial direction on one end surface so as to insert one end of the abutment, and forming an artificial root by supporting the abutment; And a abutment fixing screw including a screw head and a screw body, the abutment fixing screw passing through the abutment and being fastened to the coupling recess of the abutment to fix the abutment abutment to the abutment. Wherein the screw body includes a male screw portion for screwing with the male screw member and a non-female shank portion provided between the screw head and the male screw portion; The shank portion includes a non-threaded portion protruding out of the abutment through one end of the abutment to reinforce the strength of the abutment fixing screw.

Therefore, the strength of the abutment fixing screw is improved, and the fatigue life is improved, so that the fracture phenomenon of the fixed screw is improved, so that the life of the implant is lengthened and the cost for preserving the implant is saved.

However, the above background art has a disadvantage in that a male thread is formed in each of the flat plates, which is easy to insert but can not be pulled out or positioned.

Korean Published Patent Application No. 10-2012-0078855 Korean Patent Laid-Open Publication No. 10-2013-0014735

Accordingly, it is an object of the present invention to provide an anchor fixture of a dental implant having a structure to be inserted into an accurate position without fail.

According to a preferred embodiment of the present invention,

In a fixture of a dental implant to be implanted in alveolar bone,

A fixture body having a circular section over a predetermined length;

A screw groove for assembling an abutment member for assembling the abutment member at the center of the upper surface of the fixture body;

A plurality of bone-fitting engagement pieces which are separated from each other and separated from each other at regular intervals on an outer circumferential surface of the fixture body;

A bone-fitting engagement groove formed between the plurality of bone-fitting engagement pieces;

The bone-wearing engagement piece is comprised of an upper separation preventing jaw, a lower tapered surface, and a circular edge portion positioned at a boundary between the upper separation preventing edge and the lower tapered surface.

Further, an anchor connection portion having a circular cross section at a lower portion of the fixture body, a plurality of anchors bent upward at the anchor connection portion and arranged at equal intervals on the circumference are formed;

The anchor is composed of an inner engaging jaw that prevents upward departure, an outer curved surface that smoothly inserts the fixture into a curved surface, and an incision side that determines the width of the anchor.

According to the anchor-type fixture of the dental implant of the present invention, since the bone-marrow-wear coupling piece formed on the fixture body has an anchor-like structure as a non-threaded structure, the alveolar bone is easily inserted and inserted, and there is no dropout phenomenon. In addition, since the osseointegration is achieved through the helical key groove formed at the precise position of the osseointegration bond, the osseointegration is achieved at the correct position, and the fixation force and accuracy of the procedure are improved.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
1 is a state before anchor type fixture of a dental implant according to the present invention is placed.
FIG. 2 is a state in which an anchor fixture of a dental implant according to the present invention is placed on an alveolar bone and osseointegrated. FIG.
Figure 3 is a perspective view of the anchor fixture of Figure 1;
Figure 4 is a front view of Figure 3;
Fig. 5 is a longitudinal sectional view of Fig. 3; Fig.
6 is a perspective view showing an anchor fixture of the dental implant of Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

As shown in Figs. 1 to 6, the present invention provides a fixture 10 of a dental implant to be implanted in the alveolar bone 5 of the gum 1. The fixture 10 can be made of a titanium (Ti, Titanium) or titanium (Ti) alloy that has no rejection to the human body.

The fixture (10) is provided with a fixture body (12) having a circular cross section over a predetermined length section. A thread groove 14 for abutment assembly is formed at the center of the upper surface of the fixture body 12 to assemble the abutment 20 to connect the artificial tooth 30 to the fixture 10. The abutment (2) is a well-known technique, and the present invention is not limited to a particular shape or form.

A plurality of bone-fitting engagement pieces 16 are formed on the outer circumferential surface of the lower side of the fixture body 12, and a bone-fitting engagement groove 17 is formed between the plurality of bone- have. The plurality of bone-fitting engagement pieces 16 are cut with a predetermined pitch.

Therefore, the plurality of bone-fitting engagement pieces 16 are disconnected from each other. The term 'disconnection' can be understood as a term opposite to that the thread formed in the conventional fixture is continuous. That is, the conventional screw fixture type screw fixture is formed in such a manner that threads are continuously connected to the outer circumferential surface, whereas the bone-fit engagement piece 16 applied to the present invention is cut at a constant pitch and is discontinuously disconnected.

Particularly, the bone-fitting engagement piece 16 has a circular edge portion (not shown) positioned at the boundary between the upper separation preventing jaw 161, the lower tapered surface 163, the upper separation preventing jaw 161 and the lower tapered surface 163, 162).

Here, the upper separation preventing jaw 161 may be a planar surface or arcuate surface, and the circular edge portion 162 may be linear or planar. The lower tapered surface 163 may be a sloped surface or a convexly curved surface for smooth insertion of the fixture body 12. [

As described above, according to the present invention, since the fixture 10 has the lower tapered surface 163 on the bone-fitting engagement piece 16 of the fixture body 12, the fixture 10 can be easily inserted. And it is also advantageously inserted by the upper separation preventing jaw 161 of the bone-fitting engagement piece 16 without fail.

In order to increase the binding force of the fixture 10 and accurately hold the fixture 10 at the time of osseointegration, an anchor connecting portion 18 and an anchor connecting portion 18 having a circular cross section and having a circular cross section at the lower portion of the fixture body 12 The plurality of anchors 19 may be further formed so as to be upwardly curved and arranged at equal intervals on the circumference.

3, the anchor 19 includes an inner engaging jaw 191 for preventing upwards deviation, an outer curved surface 192 for smoothly inserting the fixture into a curved surface, an incision surface 19 for determining the width of the anchor 19, (193).

At this time, a constant clearance space for osseointegration is formed between the adjacent anchors 19 and 19, and the outer curved surface 192 constituted by the plurality of anchors 19 performs an anchor function during osseointegration, .

In the present embodiment, the anchors 19 are arranged at 90 intervals and are composed of four, but the present invention is not limited to this, and the anchors 19 may be composed of two, three, or five to eight depending on the spacing.

The implant treatment using the fixture thus configured will be described.

First, as shown in FIG. 1, drilling is performed on the alveolar bone 5 in consideration of the diameter of the bone-fitting engagement piece 16 of the fixture 10. That is, the drilling is performed by machining the hole 6 into which the bone-fitting engagement piece 16 can be inserted into the alveolar bone 5.

Here, the hole 6 is machined to a size capable of accommodating the diameter of the fixture body 12. At this time, the hole machining can be extended through the reamer operation.

Next, the fixture 10 of the present embodiment is inserted into the hole 6, which is drilled by the drill, to be placed.

When the fixture 10 is placed in this manner, the anchor curved surface 191 shown in the anchor structure facilitates insertion into the hole 6 as shown in FIG.

The abutment 20 is engaged with the screw groove 14 for abutment assembly of the fixture 10 when the fixture 10 has been completely placed and the time for bone adhesion to the fixture 10 has elapsed.

Here, osseointegration is performed over a period of several months. At this time, firm osseointegration is made in the bone-oil wearing engagement groove 17 existing between the adjacent bone-wear binding members 16 and 16. Therefore, after the bone graft is attached, the bone-fitting engagement piece 16 is caught by the relative bone-joining engagement groove 17, so that the fusion-free fusion can be achieved. In addition, when the anchor 19 is provided, accurate positioning is possible because it is seated at the correct position after the adhesion.

Then, the abutment 20 is covered with an artificial tooth 30 (final prosthesis), so that the implant treatment is completed.

According to the fixture 10 having the above-described structure, the bone-fitting engagement piece 16 and the anchor 19 structure allow the insertion of the bone fixture 10 to be performed, as well as the placement of the bone fixture 10 at a precise position.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

12: Fixture body 121: Large diameter coupling part
122: small-diameter coupling portion 16: bone-
161: upper release preventing jaw 162:
163: lower tapered surface 17: bone-fitting engagement groove
18: Anchor connection 19: Anchor
191: Inner locking jaw 192: Outer curved surface
193: incision side

Claims (2)

In a fixture (10) of a dental implant to be implanted in an alveolar bone,
A fixture body (12) having a circular cross section over a predetermined length section;
A screw groove 14 for abutment assembly to assemble the abutment 20 in the upper center of the fixture body 12;
A plurality of bone-fitting engagement pieces (16) which are separated from each other and are separated from each other at a predetermined interval on a lower outer circumferential surface of the fixture body (12);
A bone-fitting engagement groove (17) formed between a plurality of bone-fitting engagement pieces (16);
The bone-wearing engagement piece 16 includes an upper separation preventing jaw 161, a lower tapered surface 163, and a circular edge portion 162 positioned at a boundary between the upper separation preventing jaw 161 and the lower tapered surface 163 Features an anchor fixture of dental implants. The method according to claim 1,
An anchor connection portion 18 having a circular cross section at a lower portion of the fixture body 12 and a plurality of anchors 19 bent upward in the anchor connection portion 18 and disposed at equal intervals on the circumference are formed Being;
The anchor 19 has an inner engaging jaw 191 for preventing upward displacement, an outer curved surface 192 for smoothly inserting the fixture into a curved surface, a cutting incision 193 for determining the width of the anchor 19, And an anchor type fixture of the dental implant.

Images