JP2010063852A - Dental implant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate and secure an initial implanting and fixing to an alveolar bone by easily removing a necessary amount in a short period of time without excessively grinding a patient's bone, and to mount an artificial tooth immediately after the initial fixing. <P>SOLUTION: In this dental implant for implanting a body section of an implant into a bone and exposing a head section of the implant on the bone, the body section of the implant implanted into the bone has a shape flattening the shape of the root of a natural tooth via a neck region, and has a through-hole having a size smaller than the external shape of the body section of the implant, at its central part. The neck part is formed at a shifting section from the head section to the body section and, after implanting the body section of the implant, the neck section is located in the gingival area positioned in the upper part of the alveolar bone. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to dental implants, and more particularly to implants that are implanted in bone.

  A dental implant is implanted in the alveolar bone for prosthesis of a missing tooth with a fixed denture, and is used as an artificial tooth root for the denture.

  A conventional dental implant is composed of a cylindrical body planted in an alveolar bone and a columnar head screwed to the upper part of the body, and the upper denture is fixed to the head by a screw.

  In order for the implant to bind to the alveolar bone and to fix the upper denture early, a hole with the same diameter as the cylindrical body is drilled into the bone and the initial fixation is measured by precisely fitting into that cavity, then Waiting for the bone tissue in the alveolar bone to grow and the new bone and implant to be combined.

  However, the above-mentioned conventional implant has the following problems.

  This drilling work is performed in the patient's oral cavity and requires skill.If the hole becomes smaller than the implant, the implant cannot be inserted. This results in ischemia of the bone, and the bone is partially necrotic, and the bond between the implant and the bone is compromised. On the other hand, when the hole becomes large, the implant may be shaken and reliable initial fixation cannot be obtained, and the implant may come off without being boned to the alveolar bone.

  In the case of a cylindrical screw-type implant, the force applied when screwing into the alveolar bone tends to cause resorption of bone around the implant, and it took a long time to join the bone. Furthermore, depending on the condition of the bone, there was a risk of damaging the nerves by making the hole too deep.

  Therefore, it is an object of the present invention to remove a necessary amount of bone at a place where an implant is to be planted without requiring skill, and to easily implant an implant body, and to establish an initial fixation to ensure bone bonding. To provide a high implant.

  The dental implant of the present invention is an integrated dental implant in which a body part is implanted in a bone and a head part is projected on the bone via a neck part. The body part to be implanted in the bone is an anterior tooth of a natural tooth. And the shape of the root of the premolar is flattened, the thickness is reduced from the one-third body tip portion toward the tip portion, and the width becomes narrower. The same shape as the outer shape of the body portion Through-holes are provided.

  When implanting the implant of the present invention in bone, a circular cutting instrument is used to scrape the bone. The diameter of the cutting blade of this cutting tool is the same as the thickness of the body part of the implant, so that the groove formed by cutting with the cutting tool has the same thickness as the body part of the implant, It is the optimum groove to fit the body part of the implant to be planted. The implant is inserted by tapping here using a mallet or the like, and initial fixation by frictional coupling is first obtained. Thereafter, the bone tissue in the alveolar bone is proliferated, and the new bone and the implant are joined. Conventionally, bone cutting conditions that require advanced techniques within the condition of the patient's oral cavity are relaxed, and it is possible to perform treatment without failure easily in a short time.

  In addition, since the body part of the implant is tapered so as to be thinned toward the tip, the tip of the body part can be inserted without applying excessive load to the alveolar bone when it is struck with a mallet or the like. Since it is embedded in the bone, it is difficult for the bone to absorb and a stable bond with the bone tissue can be achieved.

  Then, after implant implantation, the through hole provided in the body part of the implant is filled with the regenerated bone in the process of bone regenerative growth, so that the retention of the implant becomes stronger.

In the figure, reference numeral 1 denotes an implant of the present invention. The implant 1 includes a head 2 for supporting a denture, a body 3 that is inserted into a groove formed by excavating alveolar bone, and a neck 4 that connects the head and the body.
The implant of the present invention is made of pure titanium and a titanium-based alloy having excellent biocompatibility and excellent strength, corrosion resistance, and chemical resistance.

  The rod-shaped implant head 2 is formed so as to gradually become thicker from the head upper portion 2a toward the head lower portion 2b. A neck 4 that transitionally connects the implant head 2 and the implant body 3 is formed in the implant head lower part 2b. The shape is not particularly limited as long as it has a length suitable for the thickness of the gingival A on the alveolar bone B, and has a transitional connection between the implant head 2 and the implant body 3 and excellent strength. .

  In addition, in order to cope with various situations such as spaces with adjacent teeth at the site to be planted, an implant in the form of FIG. 3 in which the head portion of FIG. Use it differently.

  The implant body 3 is shaped so that the shape of the root of the natural tooth is flattened from the neck, the upper part 2/3 3A of the body is made uniform, and the cut end 1/3 3b of the body gradually becomes thicker toward the tip. A taper is provided so as to be thin and tapered. Thereby, since the implant body 3 is embedded without applying excessive pressure to the cancellous bone D, bone resorption is suppressed and initial fixation is facilitated. Further, a through hole 5 is provided in the center of the implant body 3, and the bone that has been regenerated and grown is filled in the through hole 5, whereby the implant is more firmly held.

  In order to set up the implant of the present invention in the alveolar bone B, a circular bone having the same diameter as the thickness of the upper two-thirds and 3a parts of the implant body is formed on the dense bone C and the cancellous bone D located in the lower part of the gingiva A. Sharpen with a tool (not shown). Using this cutting tool, the bone that is cut to the same width as the upper third of the implant body, 3a, and in which the third of the cut end is embedded, is smaller than the implant body using a bar that is smaller in diameter than the implant. A groove is dug to a slightly shorter depth (not cut to the tapered cut edge of the cut edge). Stabilization is achieved by using a mallet or the like to insert the implant by tapping, and biting the tip into the cancellous bone D free from the burden and damage caused by the groove formation.

  The present invention relates to a dental implant, and more particularly to an improvement in the shape of an implant body that is inserted into bone.

The perspective view of the implant of the present invention Side view of the implant of the present invention after implantation in the alveolar bone The perspective view of the implant of the form which rotated the head part of the implant of Drawing 1 90 degrees

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Implant 2 Head 3 Body 4 Neck part 5 Through-hole 2a Head upper part 2b Head lower part 3a Body upper part 3b Body lower part A Gingiva B Alveolar bone C Dense bone D Cancellous bone

Claims (3)

  In an integrated dental implant consisting of an implant head projecting on the gingiva from the implant body part implanted in the bone through the neck located in the gingiva, the shape of the body part of the implant is a natural tooth A dental implant characterized by having a flat shape of the root of the tooth.   A dental implant characterized in that a taper is provided so that the distal end portion is thinner and the width is narrower at a third of the distal end portion of the body portion of the implant.   A dental implant having a through-hole having the same shape as the outer shape of the body portion at the center of the body portion of the implant.

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