Set of instruments of increasing dimension for the boring of rad

Details Set of instruments of increasing dimension for the boring of rad Set of instruments of increasing dimension for the boring of rad

1995-11-14

1997-10-14

Lucchesi, Nicholas D.

Dentistry

Apparatus

Broach

A61C 502

Patent

active

056765410

ABSTRACT:
A set of instruments for boring of radicular dental canals, in which the diameter D1 of each instrument, measured at the root of the pointed end portion thereof, varies according to a geometrical progression as well as the diameter D2 of each instrument measured at the root of the cutting edges. Hence, the variation is more pronounced for the diameters D2, larger than the diameters D1, than it is for the diameters D1. The conicity of the stem of the instruments increases in this manner from one instrument to another, so as to permit a the dentist to form the radicular canals with a specially funnelled shape which is best suited for some obturations, especially those to be treated with gutta-percha.

REFERENCES:
patent: 4836780 (1989-06-01), Buchanan
patent: 4971556 (1990-11-01), Ritano
patent: 5017138 (1991-05-01), Schilder
patent: 5026284 (1991-06-01), Martin
patent: 5219284 (1993-06-01), Velvart et al.
patent: 5380200 (1995-01-01), Heath et al.
patent: 5503554 (1996-04-01), Schoeffel

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