JP2010063854A - 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, to mount an artificial tooth immediately after the initial fixing and to connect it to the bone while preventing the falling of the implant due to deflection. <P>SOLUTION: In this dental implant for implanting a body section of an implant into a bone and projecting a head section of the implant onto the bone, one faces of the respective head sections of two implants are fitted together just like joining hands in prayer, wherein the body sections of the implants form a truncated chevron in the bone. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a dental implant, and more particularly to a method using a pair of integral implants.

  A dental implant is used as an artificial tooth root for a denture by implanting it in an alveolar bone in order to prosthesis a missing tooth with a fixed denture.

  Conventionally, various types of implants have been proposed and realized. The present invention uses a blade-type implant as a prior art.

  A blade-type dental implant is composed of a blade-like body embedded in the alveolar bone and a columnar head protruding on the alveolar bone, and the upper denture is fixed by cementing the head.

  When implanting this implant, using a cutting tool, excavating a groove of the same size as the implant body, hitting this groove with a mallet etc., first inserting the implant body and obtaining initial fixation by frictional coupling, After that, the bone tissue in the alveolar bone proliferated and waited for the new bone and the implant to be combined.

  The upper denture is fixed to the head of the implanted implant body so as to restore the mastication function in the oral cavity. However, the conventional implant has the following problems.

  To ensure initial fixation of the implant, it is necessary to excavate a groove of the same size as the implant in the alveolar bone, but this grooving operation is difficult because it is performed in the patient's oral cavity. In comparison, when the groove is small, it is difficult to insert the implant. On the contrary, if the groove is somewhat large, the frictional resistance expected at the time of insertion becomes weak and the lower part of the implant body is embedded in the soft cancellous bone in the alveolar bone. The implant could sink into the alveolar bone more than necessary. In addition, there was a risk that the implant continued to sink due to such occlusal pressure even after the upper denture was mounted.

  Therefore, the object of the present invention is to remove the bone in the necessary amount to place the implant without skill, and to easily implant the implant body without sinking the implant more than necessary to ensure initial fixation. Then, by relieving the force applied to the implant in the vertical direction due to the subsequent occlusal pressure, it is possible to prevent the implant from being shaken and settled and to provide a highly established implant that functions in the oral cavity for a long time.

  The dental implant of the present invention comprises a pair of integral implants in which a body part is implanted in a bone and the head part protrudes on the gingiva via a neck at the position of the gingiva on the bone. The body is located in the bone in the shape of figure eight at the time of palming. The body part to be planted in the bone has a shape in which the front teeth of the natural teeth and the roots of the premolars are flattened so that the thickness decreases from one third of the body tip part toward the tip part. A through hole having the same shape as the outer shape of the body is provided.

  When implanting the implant body 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 implant body part, so that the groove formed by cutting with the cutting tool has the same thickness as the implant body and is implanted. It is the optimum groove to match the implant body. Here, the implant body is inserted by tapping using a mallet or the like to obtain initial fixation by frictional coupling, and then 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.

  Since the implant body is configured to taper toward the tip, when the hammer is struck with a mallet or the like, the tip of the implant bites into the bone without applying excessive load to the alveolar bone. Can be fixed.

  Then, one side of the pair of heads is brought into a palm, and when the palms are brought together, the body part is formed in an eight-shaped shape within the bone, and is connected at an angle without being vertically connected from the head. This prevents settlement due to the occlusal pressure of the implant after it has been implanted in the bone, and makes it more difficult to fall off.

  By attaching the upper denture to the implant in the state of being held in this manner and fixing and integrating the pair of implants at the head portion, the resistance against occlusal pressure is exerted compared to a single implant.

  Further, after the implant is established, the through hole provided in the implant body is filled with the regenerated bone in the process of regenerating and growing the bone, so that the retention of the implant is further strengthened.

In the figure, reference numeral 1 denotes an implant of the present invention. The implant 1 is a pair of a head 2 and a head 3 for supporting a denture, a body 4 and a body 5 inserted into a groove excavated in the alveolar bone, and a neck 6 and a neck 7 connecting the head and the body. Consists of
The implant of the present invention is made of pure titanium and titanium alloy having excellent biocompatibility and excellent strength, corrosion resistance, and chemical resistance.

  The columnar implant heads 2 and 3 are configured such that the heads 2 and 3 are in contact with each other without being tapered, and the other axial surfaces gradually become thicker from the head upper part 2a toward the head lower part 2b. To form. In the implant head lower part 2b, neck parts 6 and 7 for connecting the implant head and the implant bodies 4 and 5 in a transitional manner are formed. The shape is not particularly limited, has a length suitable for the thickness of the gingiva A on the alveolar bone B, has a transitional connection between the implant heads 2, 3 and the implant bodies 4, 5 and has excellent strength. If it is.

  The implant bodies 4 and 5 are formed by flattening the shape of the roots of natural anterior teeth and premolars, the body upper parts 4a and 5a are made uniform in thickness, and the cut ends 4b and 5b of the body taper toward the tip. A taper is provided. Thereby, the implant bodies 4 and 5 bite into the cancellous bone D, and initial fixation becomes easy. Further, a through hole 8 is provided in the center of the implant bodies 4 and 5, and the bone that has been regenerated and grown is filled in the through hole 8, whereby the holding of the implant becomes stronger.

  In order to plant the implant of the present invention in the alveolar bone, the dense bone and cancellous bone located in the lower part of the gingiva are cut with a circular cutting tool (not shown in particular) having the same diameter as the thickness of the implant body upper parts 4a and 5a. . Using this cutting tool, a groove is dug in the direction of embedding the body in the same dimensions as the implant body. A groove is dug to a depth slightly shorter than the length of the implant body.

  Using a mallet or the like, the implant is inserted by tapping, and the tip is bitten into the cancellous bone without the burden or damage caused by the groove formation.

  First, the groove for inserting the implant 1 is cut in a direction in which the implant 2 and the head portion fit and become a single head after the body of the implant 1 is inserted into the alveolar bone. Next, the groove is formed in the same manner as when the groove is formed in order to insert the implant 2 into the body of the implant 1.

  Next, the implants 1 and 2 are inserted into the formed grooves to fit one surface of the head part, and the upper denture is fixed, so that the pair of implants can be integrated at the head part to suppress fluctuation due to occlusal pressure and to stabilize the implant. it can.

  Furthermore, after the implant is set up, the body of the implant 1 and the body of the implant 2 are shaped like an eight in the bone, so that the settlement due to the occlusal pressure applied to the implant and the dropping due to the shaking can be prevented.

  The present invention relates to a dental implant, and more particularly to an improvement of an implant body in which two implant bodies are paired.

  The perspective view of the implant of the present invention   Side view after implantation of the implant of the present invention into the alveolar bone   One side of a pair of implants   One side of a pair of implants

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Implant body 2 Implant head 2a Implant head upper part 2b Implant head lower part 3 Implant head 3a Implant head upper part 3b Implant head lower part 4 Neck part 5 Neck part 6 Implant body 6a Implant body upper part 6b Implant body lower part 7 Implant body 7a Implant body upper part 7b Implant body Lower part 8 Through-hole 9 Through-hole 10 Joint plane A Gingiva B Alveolar bone C Dense bone D Spongy bone

Claims (3)

  In an integrated dental implant consisting of an implant head portion projecting on the gingiva from a body portion of the implant implanted in the bone through a neck portion located in the gingiva portion, A dental implant intended to prevent sinking.   A pair of dental implants that are fixed to each other by joining one head of the heads of the two implants to the head part having the upper denture.   A dental implant of a type in which the body part of a pair of implants is shaped like a square in the bone.

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