Methods for manufacturing endodontic instruments

Metal working – Method of mechanical manufacture – Dental appliance making

Reexamination Certificate

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Details

C433S102000, C216S091000

Reexamination Certificate

active

07398598

ABSTRACT:
A method of manufacturing endodontic files involves a chemical milling process to yield endodontic files having a desired taper and/or degree of sharpness. The process involves the steps of (a) forming helical cutting edges in the cutting portion of the metallic rod; and (b) chemically milling the cutting portion of the rod so as to sharpen and/or taper the cutting portion. The rod may be formed of any desirable metallic material, for example stainless steel or a nickel-titanium alloy. The cutting edges may be formed by torsioning, cutting, grinding, machining, laser micromachining, or grit blasting.

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