| 摘要 |
<p>A dental drilling assembly comprises a drill (30) and a bushing (40) which is mounted, or mountable, coaxially with the drill (30). The bushing (40) can be inserted with the drill (30) into a bore hole of a surgical template and can similarly be removed from the bore hole when a hole has been drilled. The bushing has a serrated leading edge (51) for cutting soft gingival tissue. A pathway (54, 55) is defined between the drill (30) and the bushing (40). The pathway (54, 55) cooperates with a fluted channel on the drill and serves, in use, to evacuate soft tissue from the cutting surface (51). A surgical template has at least one bore hole representing a position where the drill is required to be used. The bore hole, or a bore tube lining the bore hole, has a diameter which is only slightly larger than the bushing.</p> |
