PROBLEM TO BE SOLVED: To provide an artificial tooth used for a plate denture that is a dental prosthesis device in which the keeping effect with a denture base material is maintained without depending on the adjustment of a crown length diameter.SOLUTION: An artificial tooth has an internal structure that includes a support part d and a groove space e surrounding the support, and secures the mechanical keeping force for the denture base material without depending on the adjustment of an artificial tooth length diameter. That is, the efficiency improvement of denture making becomes possible such that the reworking of a through hole or the like can be suppressed to the minimal. Moreover, the contamination of the junction with the denture base material by a micro leakage is reduced by disposing a protrusion c in an artificial tooth outer peripheral wall distal end, and the aesthetic effect is reduced.COPYRIGHT: (C)2013,JPO&INPIT【課題】歯科補綴装置である有床義歯に使用する人工歯において、その歯冠長径の調整によらず義歯床材料との維持効果を保持する。【解決手段】支柱部dおよび支柱周囲の溝空間eを有する内部構造を備え、人工歯長径の調整によらず義歯床材用との機械的維持力を確保する。即ち、貫通孔などの再加工を最小限度に抑えることができるなど義歯作製の効率化が可能となる。また、人工歯外周壁先端に突起部cを設けることでマイクロリーケージによる義歯床材料との接合部の汚染を軽減し審美的影響を軽減する。【選択図】図1
