< Topic >At the time of root tube remedying of the gearwheel, the ended triangle the removable dentistry remedy instrument is offered appropriately.SolutionsThe basic destal is penetrated completely to axial direction from the cutting section 3 which was formed to rim to the Tip and the Tip, guide component 10 of the elasticity which is interposed in root tube 20 the drill 1a for dentistry root tube remedy which has the shaft body 2 which possesses with the insert possible perforation hole 4 is used. When using, when guide component 10 is made to interpose into root tube 20, it cuts the triangle 21 of the end.< Choice figure >Drawing 2【課題】歯の根管治療において、エンド三角を適切に除去可能な歯科治療器具を提供する。【解決手段】先端部に外周に形成された切削部3と、先端部から基端部を軸方向に貫通し、根管20に挿入される弾性のガイド部材10を挿抜可能な貫通孔4とを有するシャフト体2を備えた歯科根管治療用ドリル1aを用いる。使用時には、ガイド部材10を根管20内に挿入させた状態で、エンドの三角21を切削する。【選択図】図2
