Instrument for boring dental radicular canals

Details Instrument for boring dental radicular canals Instrument for boring dental radicular canals

1996-04-08

1998-05-05

Lucchesi, Nicholas D.

Dentistry

Apparatus

Broach

A61C 502

Patent

active

057465975

ABSTRACT:
An instrument for boring dental radicular canals in which the conicity of the active part of the tapered stem of the instrument is not constant but the angle of its opening is greater at its rear portion, positioned beyond the diameter D.sub.9, than the angle of opening of its front portion positioned between its end and the diameter D.sub.9 so that a dental canal bored with the instrument has a bell-mouthed shape.

REFERENCES:
patent: 2902763 (1959-09-01), Heppe
patent: 4538989 (1985-09-01), Apairo, Jr. et al.
patent: 4738616 (1988-04-01), Reynaud
patent: 4971556 (1990-11-01), Ritano
patent: 5219284 (1993-06-01), Velvart et al.
patent: 5257934 (1993-11-01), Cossellu

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