| 摘要 |
A drill having a head that has a modified egg shape. The distal most end of the drill head is rounded and has a smaller diameter with a cutting bevel which flares into an area having a maximum diameter that is slightly larger than the diameter of the corresponding screw or implant that is used in the surgical procedure. The distal end of the drill also includes a plurality of cutting flutes which extend part of the way up the narrower portion of the drill head just up to the area having the maximum diameter. This drill can then be used to turn a countersink area into the bone at the implant site.
|
