| 摘要 |
<p>A dental tool such as drill, burr, anchor and the like is receivable in a dental hand piece for operative positioning with respect to the teeth of a patient. The dental tool has a body member with an operative end portion for association with the teeth and a shank extending from the operative end portion for association with the hand piece. The head portion of the shank has a first arrangement including a flat surface to provide driving engagement between the shank and the hand piece, and a circumferential groove for receiving a latching member of the hand piece for removably engaging the shank in the hand piece.</p> |
