Patent ID: 8038445
Filing Date: 2011-10-18
Classification: A61C,B23B

Abstract:
1. A method of forming a hole in a jaw bone at a drill site, the method comprising: forming an initial hole in soft tissue of the jaw bone using a first portion of a drill, the first portion disposed at a distal end of the drill, the first portion having a first width for defining a diameter of the initial hole; advancing the first portion of the drill through the soft tissue and into a bone portion of the jaw bone to form a guidance hole in the bone portion of the jaw bone, the guidance hole having a diameter generally defined by the first width of the first portion of the drill; advancing the drill until a second portion of the drill contacts the soft tissue to form an enlarged hole in the soft tissue, the second portion disposed at least partially intermediate the first portion and a proximal end of the drill, the second portion having a second width that is greater than the first width, the enlarged hole having a diameter that is generally defined by the second width of the second portion of the drill and is larger than the diameter of the initial hole; and further advancing the drill until the second portion of the drill contacts the bone portion of the jaw bone to form a countersink hole in the bone portion, the countersink hole having a flat bottom and an inclined surface, wherein the flat bottom is immediately adjacent to the inclined surface.