PROBLEM TO BE SOLVED: To provide a dental grinding bar which does not require an operators senses and experience and permits any one to surely give gentle and appropriate roundness and thickness to a cut end of an abutment tooth and a concavity of an occlusal surface.SOLUTION: The dental grinding bar is a grinding bar for forming an abutment tooth which acquires electronic data and forming an apex shape of the abutment tooth, and permits the shape to be read by a 3D scanner, and an abutment tooth shape suitable for processing by a CAM to be formed as well, and has a working section 5 formed of a gentle curve between the deepest portion and an end direction apex portion and the deepest portion and a shaft portion 6 direction apex portion.COPYRIGHT: (C)2012,JPO&INPIT【課題】術者の感覚や経験を必要とせず、誰でも確実に支台歯の切端部や咬合面の凸部になだらかで適切な丸みや厚みを付与することが可能な歯科用研削バーを提供する。【解決手段】電子データを取得する支台歯の頂部形状を形成する支台歯形成用研削バーであって、3Dスキャナーで形状を読み取りやすく、かつCAMでの加工にも適した支台歯形状に形成可能であり、作業部5は、最深部と端方向頂部の間および最深部と軸部6方向頂部の間は、なだらかな曲線から構成される歯科用研削バー。【選択図】図6
