| 摘要 |
To provide a detachable stopper fixed on a spindle part of a dental drill to regulate the depth of an implant fixture embedding hole in an implant treatment, the detachable stopper includes a stopper main body 1 being made of an elastically deformable metal material, having a cylindrical shape, having a slightly smaller inner diameter than an outer diameter of the spindle part, having a slit part 1a formed along an axial overall length from an outer peripheral face to an inner peripheral face to have an opening, and having a diameter expanding tool insertion part 1b bored at an axial center of the slit part 1a, and a diameter expanding tool 2 to be inserted into the diameter expanding tool insertion part 1b to expand the inner diameter of the stopper main body 1 to be larger than the outer diameter of the spindle part.
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