PROBLEM TO BE SOLVED: To provide a vibration cutting tool for root canal treatment and a vibration cutting device for root canal treatment for excellently performing cutting elimination of a root canal filler and expanding cutting of cracks of a root canal.SOLUTION: In the vibration cutting tool 11 for root canal treatment which includes a shaft part 13 and an operation end part 14 coupled to an end of the shaft part 13, the operation end part 14 is composed of a conical part 15 which is narrower toward the end, is coupled to the shaft part 13 almost in the center of a bottom surface 15a of the conical part 15, and an angle &alpha made by a shaft core 13a of the shaft part 13 and the bottom surface 15a of the conical part 15 is a right angle or acute angle.COPYRIGHT: (C)2012,JPO&INPIT【課題】根管充填物の切削除去や、根管の破折線の切削拡大を好適に行うことができる根管治療用振動切削工具及び根管治療用振動切削装置を提供する。【解決手段】軸部13と、該軸部13の先端に連成された作用端部14とを含む根管治療用振動切削工具11において、前記作用端部14は、先端に向かって先細の錐状体15からなり、該錐状体15の底面15aの略中央において前記軸部13に連成され、且つ、前記軸部13の軸心13aと前記錐状体15の底面15aとのなす角度αが直角または鋭角とされていることを特徴とする根管治療用切削工具11である。【選択図】図2
