Patent ID: 7125252
Filing Date: 2006-10-24
Classification: A61B,A61C,B23C,Y10T

Abstract:
1. Endodontic instrument comprising: a base ( 11 ), a cutting section ( 12 ) and a guiding section ( 13 ), the cutting section being defined by an envelope ( 15 ) of cylindrical or conical shape, this cutting section being provided with clearance zones ( 16 a ), located so that said clearance zones are set back relative to the envelope ( 15 ), alternating with drilling zones ( 16 b ) placed on said envelope, the cutting section ( 12 ) is a polygonal in cross section and includes sharp edges, and in a central part of a clearance zone ( 16 a ) said edges are all placed so that said edges are set back from the envelope ( 15 ), wherein the central part of a drilling zone ( 16 b ), said edges are all placed on said envelope and in a zone intermediate between a clearance zone ( 16 a ) and an adjacent drilling zone ( 16 b ), at least one edge is on the envelope and at least on edge is set back from the envelope.