Barbed endodontic instrument
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United States of America Patent
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Mar 28, 2006
Grant Date -
Nov 13, 2003
app pub date -
May 10, 2002
filing date -
May 10, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for producing an endodontic instrument by selectively hacking burr-like cutting projections or barbs into an elongated metal rod. A cylindrical hacking blade or other suitable blade having a convex cutting edge is preferably used to produce generally cup-shaped or concave barbs for greater strength and cutting efficiency. The barbs may be formed in a variety of shapes, sizes, orientations and patterns, such as regular or irregular helical or linear patterns, on the instrument.
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