| 摘要 |
A separated drill for dentistry is provided to extend the length by not using a drill extender. A separated drill for dentistry comprises: a drill part(20); a shank part(30) arranged in parallel with the drill part; a drill joint(40) which is formed in the rear of the drill part and is formed of an insertion projection(42) of the tapered shape and a rotation prevention projection(44); and a shank joint(50) which is formed in one end of the shank part and is formed of a fitting groove(52) of the tapered shape in which an inserting projection is inserted and coupled by force and a rotation prevention groove(54) to which a rotation prevention projection is combined.
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