US 2021/0259805 A1 · ENDODONTIC INSTRUMENT

Abstract

An endodontic file, for manual or motor driven use by an endodontist, includes a color-coded handle, a shank, and a serrated cutting edge. The cutting edge of the endodontic file is side-cutting with pyramidal teeth and ends in a pointed tip. The endodontic file is used manually inside the root canal in an “up and down” axially aligned motion and these pyramidal teeth will provide a ripping action. A second type of endodontic file has a curved cross section and a sharpened tip. with pyramidal teeth lining the edges of curved blade section. A third type of endodontic file has a flat debriding side which tapers to a point; with a series of adjacent 3-D pyramids emerging from this surface for removing loose material or in urging already loosened material from a root canal.

Claims18

Dependent claims

A method of clearing a root canal in preparation for retreatment comprising the steps of:

inserting into said root canal a debriding section of an endodontic re-treatment instrument, said instrument comprising a handle adapted for manual manipulation without use of power, said debriding section, and a shank connecting said handle to said debriding section, said debriding section comprising a flat side with an upper edge having sharp saw tooth denticulated projections along a side opposite to said flat side, with each sharp saw tooth denticulated projection extending upward;
and
moving said instrument manually within said root canal for engaging a gutta percha sleeve surrounding a central carrier core therein until said carrier core is released from said root canal, permitting its removal.

Dependencies are inferred from the claim text.

Endodontic instrument

Life of this patent

Endodontic instrument

Life of this patent

Abstract

Claims18