Endodontic dental instrument

Details Endodontic dental instrument Endodontic dental instrument

1996-05-01

1998-02-03

Mancene, Gene

Dentistry

Apparatus

Broach

408230, A61C 502

Patent

active

057137366

ABSTRACT:
An endodontic instrument which comprises an elongate shank which has a tapered working length adjacent the pilot end, and at least two continuous helical flutes formed along the tapered working length. The flutes are non-uniformly separated in the axial direction, and they define a relatively broad helical land and at least one relatively narrow helical surface. In one embodiment, the helical surface is a relatively narrow helical land and in another embodiment, the helical surface is a sharp helical edge.

REFERENCES:
patent: 2370706 (1945-03-01), Andreasson
patent: 3045513 (1962-07-01), Andreasson
patent: 4871312 (1989-10-01), Heath
patent: 4934934 (1990-06-01), Arpaio, Jr. et al.
patent: 5106298 (1992-04-01), Heath et al.
patent: 5464362 (1995-11-01), Heath et al.

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