| 摘要 |
A dental fixture is provided to minimize the force given to a cortical bone when being inserted into a bone tissue of a user, to minimize the bone absorption and to facilitate the osseo-integration. A dental fixture(10) is inserted into a bone tissue consisting of a cortical bone and a sponge bone, forms an artificial root of a tooth, and includes a first part(20) and a second part(30). The first part is transplanted on the cortical bone, and plural screw threads consisting of a first screw thread(21) and a second screw thread(22) are formed on the outer circumference of the first part. The second part is transplanted on the sponge bone. A third screw thread(31) is formed on the outer circumference of the second part. A second height of the second screw thread gets lower as it goes in one direction along the central axis.
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