A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
83/15
A61C 3/00 (2006.01) A61C 3/02 (2006.01)
Patent
CA 1049301
Abstract A dental bur having a shank provided on one end with a cutting head having a series of similar teeth extending longitudinally and spaced evenly around the circumference thereof; said teeth each having a flat cutting face extending from the cutting edge radially toward the axis of the head to form one side of said tooth and provide a positive cutting rake therefor, a relative deep chip gash adjacent said face, and a convex relief surface extending from the cutting edge toward said gash adjacent the next succeeding tooth to form the opposite side of each tooth, said convex relief surface permitting said chip gashes to be substantially deeper than such gashes in conventional burs without sacrificing strength of said teeth to resist chipping and breakage of said cutting edges, as well as including the benefit of said flat cutting face which extends radially to provide said positive cutting rake.
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