< Topic > To be difficult to break while using, furthermore, the cutting tool for dentistry which can collect easily even with when it breaks is offered.Solutions The tapered section to be formed by the point of 13 which from the prismatic shank section 12 being gripped in chuck 15 of the rotary tool and the said shank section gradually becomes small diameter and the said tapered section, to provide the connected surface 13c in the position where it is larger than largest diameter of the aforementioned blade section of the aforementioned tapered section, in the cutting tool 10 for dentistry which possesses with the blade section 11 which possesses the largest diameter which is thinner than the aforementioned shank section, from the aforementioned blade section 11 with cemented carbide, the thermet or ceramics to form the part to the aforementioned connected surface 13c in one body, from the aforementioned connected surface 13c shank section 12 side the stainless steelIt formed with metal, such as steel iron and titanium alloy connected both in the aforementioned connected surface.< Selective figure > Figure 1【課題】 使用中に折れにくく、しかも、折れた場合でも容易に回収することができる歯科用切削具を提供する。【解決手段】 回転工具のチャック15に把持される柱状のシャンク部12と、該シャンク部から徐々に細径になるテーパー部13と、該テーパー部の先端に形成され、前記シャンク部より細い最大径を有する刃部11とを有する歯科用切削具10において、前記テーパー部の前記刃部の最大径より大きい位置に接続面13cを設け、前記刃部11から前記接続面13cまでの部分を超硬合金、サーメット又はセラミックで一体的に形成し、前記接続面13cからシャンク部12側をステンレス鋼、鋼鉄、チタン合金等の金属で形成し、両者を前記接続面で接続した。【選択図】 図1
