JP3228880U - Periodontal ligament - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an alveolar membrane in which an implant bone is firmly fixed in a predetermined position. SOLUTION: The alveolar membrane has a connecting portion 10 provided with a through hole 11 for penetrating an artificial tooth root 51, a covering portion 20 having one end connected to the connecting portion and having a plurality of openings, and a covering portion. It is provided at the other end and includes a fixing portion 30 including at least one claw portion 31 having a tip for fixing between the bone tissue 52 or the bone tissue and the soft tissue 53. The implant bone 54 is firmly fixed in place by connecting and fixing portions located at both ends and fixed together. [Selection diagram] Fig. 3

Description

The present invention relates to the periodontal ligament used in dental implant surgery, and more particularly to the periodontal ligament having a good fixation state.

In general, tooth loss due to an accident, lesion or other cause not only loses aesthetics, but also affects mastication and bite. Therefore, dentists usually suggest to patients to make dentures to replace lost teeth.

Conventional dentures are generally classified into two types: movable dentures and fixed definition dentures. As the name implies, movable dentures can be attached and detached in the mouth at any time, and are often applied to patients who lack a large number of teeth. Dentures are fixed in the patient's mouth and cannot be removed at will. Most of the conventional fixed definition teeth are bridge type dentures, and the dentist uses both teeth to support and prepare three dentures, and the support points of the bridge are located on both sides of the tooth. The disadvantage of bridge dentures is that good teeth must be abraded in order to fit the denture.

Artificial implants are now in widespread use as a treatment to replace lost teeth. Artificial implants are a treatment method in which an artificial tooth root is implanted in a site where a tooth is missing, and its advantages are that it is highly durable and does not damage good teeth.
However, the bone tissue at the site where the tooth is missing gradually atrophies over time, and after about half a year, it atrophies by about 40%, the alveolar bone becomes thin, the stability of the implant is affected, and the implant surgery fails. Sometimes.

To remedy the problem of bone deficiency in the missing tooth, dentists usually first perform bone replacement surgery. In so-called bone replacement surgery, implant bones such as dentures and autologous bones are implanted in the defect site, and the implant bones are covered with alveolar membrane to maintain the necessary external mold and position.

The conventional periodontal ligament is a plate piece having a predetermined shape, and has a connecting portion and a covering portion. The connection portion is provided with a connection hole for connecting to the artificial tooth root. The covering has a plurality of holes for covering the implant bone. For the detailed structure of the periodontal ligament according to the prior art, reference is made to Taiwan Patent No. 201311218 and 201332523, US Pat. No. 2014/0199657 and 2014/0349251, and the details are omitted.

As can be seen from the above structure, only one end of the alveolar membrane according to the prior art is connected via a connection hole and an artificial tooth root, and the other end is in an empty state with no support. Unstable conditions affect bone replacement surgery and even the success or failure of implant surgery.

An object of the present invention is to provide a periodontal ligament having a good fixation state.

In order to achieve the above object, the periodontal ligament of the present invention includes a connecting portion provided with a through hole for penetrating an artificial tooth root, and a covering portion having one end connected to the connecting portion and having a plurality of openings. A fixing portion provided at the other end of the covering portion and including at least one claw portion having a tip for fixing to a predetermined portion of human body tissue.

In one embodiment, the connecting portion, the covering portion, and the fixing portion are a single piece of plate.

In one embodiment, a flexure portion is provided at the intersection of the connection portion and the coating portion, and the flexure portion is formed by arranging a plurality of elongated holes in a straight line.

In one embodiment, a flexure portion is provided at the intersection of the covering portion and the fixing portion, and the flexure portion is formed by arranging a plurality of elongated holes in a straight line.

In one embodiment, the claw portion of the fixation is inserted between bone tissue or bone tissue and soft tissue.

In one embodiment, the width of the connection is gradually increased over the coating until it has the same width as the coating.

The alveolar membrane according to the present invention is in a preferable fixed state by connecting the connecting portion and the fixing portion located at both ends so as to be fixed to the artificial tooth root and the human body tissue, respectively, and the implant bone is in a predetermined position. It is firmly fixed to the implant and enables smooth implant surgery.

It is a front view of one preferable embodiment of this invention. It is an inclination view of one preferable example of this invention, and shows the coupling state with an artificial tooth root. It is sectional drawing of one preferable Example of this invention, and shows the state which the artificial tooth root and the alveolar membrane are attached to the defective part. It is a partially enlarged view of one preferable example of this invention, and shows the fixation method of inserting a fixation part into a bone tissue. It is a partially enlarged view of one preferable example of this invention, and shows the fixation method of inserting a fixation part into bone tissue and soft tissue.

The drawings will be referred to below. The technical method of the present invention will be described clearly and completely. However, the examples described are only a part of the examples of the present invention, not all the examples. Anyone with conventional knowledge in the art can obtain any other embodiment based on the embodiments of the present invention without creativity, all of which are also within the scope of the present invention.

With reference to FIGS. 1 and 2, the periodontal ligament according to a preferred embodiment of the present invention is a single piece of plate made of titanium metal, titanium alloy, or other suitable material, in order of connection. It has 10, a covering portion 20, and a fixing portion 30.

The width of the connecting portion 10 gradually increases from one end to the covering portion 20 until it becomes the same width as the covering portion 20. The connection portion 10 is provided with a through hole 11 for penetrating the artificial tooth root 51 and fixing the artificial tooth root 51 to the missing portion of the tooth. The covering portion 20 has a predetermined radian and is provided with a plurality of circular openings 21.
The fixing portion 30 has three claw portions 31 having a triangular shape, and each claw portion 31 has a tip at the outer end. In this embodiment, a flexure portion is provided at a joint portion between the connecting portion 10 and the covering portion 20 and at a connecting portion between the covering portion 20 and the fixing portion 30, respectively. Each of the flexure portions is formed by linearly arranging three elongated holes 41 and 42, the connecting portion 10 with respect to the covering portion 20, and the covering portion 20 with respect to the fixing portion 30. , Curved at the required predetermined angle.

See FIG. The use of the periodontal ligament according to the embodiment of the present invention is the same as that of a general conventional periodontal ligament, and the through hole 11 in the connection portion 10 is formed in the artificial tooth root 51 of the bone tissue 52 fixed to the tooth defect portion. To be combined. The implant bone 54 is covered by the covering portion 20. The difference is that the claw portion 31 of the fixation portion 30 is inserted between the bone tissue 52 (see FIG. 4) or the bone tissue 52 and the soft tissue 53 (see FIG. 5). Therefore, the alveolar membrane according to the embodiment of the present invention is in a preferable fixed state by being bonded so that the connecting portion 10 and the fixing portion 30 located at both ends are fixed to the artificial tooth root 51 and the human body tissue, respectively. Therefore, the implant bone 54 is firmly fixed in a predetermined position, and the implant operation can be smoothly performed.

The advantages of the present invention are that the structure is simple, it is highly practical, and the implant bone is firmly fixed in place by the method of having fixing points at both ends of the alveolar membrane, and implant surgery can be performed smoothly. It is a point.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes and the like within a range not deviating from the gist of the present invention are also included.

10 Connection part 11 Through hole 20 Covering part 21 Opening part 30 Fixing part 31 Claw part 41 Long hole 42 Long hole 51 Artificial tooth root 52 Bone tissue 53 Soft tissue 54 Implant bone

Claims (6)

A connection part provided with a through hole for penetrating the artificial tooth root,
A covering portion having one end connected to the connection portion and having a plurality of openings,
A fixing portion provided at the other end of the covering portion and including at least one claw portion having a tip for fixing to a predetermined portion of human tissue.
The width of the connecting portion gradually increases from one end to the covering portion until it becomes the same width as the covering portion.
A flexure portion is provided at the intersection of the covering portion and the fixing portion.
The flexure portion is formed by arranging a plurality of elongated holes in a straight line.
Periodontal ligament. The periodontal ligament according to claim 1, wherein the connecting portion, the covering portion, and the fixing portion are a single plate piece. The periodontal ligament according to claim 1, wherein a flexure portion is provided at a joint portion between the connection portion and the covering portion. The periodontal ligament according to claim 3, wherein the flexure portion is formed by arranging a plurality of elongated holes in a straight line. The alveolar membrane according to claim 1, wherein the claw portion of the fixed portion is inserted into the bone tissue. The periodontal ligament according to claim 1, wherein the claw portion of the fixed portion is inserted between the bone tissue and the soft tissue.

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