PROBLEM TO BE SOLVED: To provide a tooth root implant that is stably connected with an alveolar bone, and furthermore it is hard to be loosened under the influence of an external force and a satisfactory localization effect can be kept.SOLUTION: A tooth root implant is characterized as follows: multiple first recessed caves 111 are formed on the surface of a main body 11 a thread section 14 formed on an outer circumferential surface of the main body 11 continuously has a coarse thread 141 being near to a tip chain part 12, and a fine thread 142 having the height lower than that of the coarse thread 141 and having a narrow pitch multiple second recessed caves 1411 are formed on the surface of the coarse thread 141 each of the first and second recessed caves 111, 1411 is formed by a high energy photothermal method and is arranged on the surface of the main body 11 and the coarse thread 141 at equal and regular intervals and the cells increased in the healing of the alveolar bone are deposited in the inside of each of the first and second recessed caves 111, 1411.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】歯槽骨と安定的に結合され、しかも外力の影響を受けて緩みにくく、良好な定位効果を持たせられる歯根インプラントを提供すること。【解決手段】本体11の表面に複数の第一凹洞111を形成し、本体11の外周面に形成されたスレッドセクション14は、先端の鎖合部12に近い並目ネジヤマ141と、並目ネジヤマ141よりも高さが低くてピッチが狭い細目ネジヤマ142を連続して有し、並目ネジヤマ141の表面に複数の第二凹洞1411を形成し、各第一、第二凹洞111,1411は、高エネルギー光熱方式により成形されて、本体11と並目ネジヤマ141の表面に等間隔で均等に配列され、歯槽骨の治癒時に増殖した細胞は各第一、第二凹洞111,1411内に付着する。【選択図】図1
