Endodontic instrument for accessing a pulp chamber

Details Endodontic instrument for accessing a pulp chamber Endodontic instrument for accessing a pulp chamber

2006-03-07

2006-03-07

O'Connor, Cary E. (Department: 3732)

Dentistry

Apparatus

Broach

Reexamination Certificate

active

07008223

ABSTRACT:
An endodontic instrument for accessing a pulp chamber of a molar includes an elongated shaft having an upper end and a lower end and a stop fixed to the shaft at a distance between 6–8 mm from the lower end. The instrument also includes a cutting head located along the shaft adjacent the lower end. In certain embodiments, the cutting head has an annular cutting surface extending about a first circumferential portion of the cutting head and a flat non-cutting surface extending about a second circumferential portion of the cutting head. The lower end of the shaft may have a pointed tip.

REFERENCES:
patent: 3562913 (1971-02-01), Saffro
patent: 3961422 (1976-06-01), Riitano
patent: 3962791 (1976-06-01), Zdarsky
patent: 4345899 (1982-08-01), Vlock
patent: 5429504 (1995-07-01), Peltier et al.
patent: 6042376 (2000-03-01), Cohen et al.
patent: 6390814 (2002-05-01), Gardiner
patent: 6739872 (2004-05-01), Turri
patent: 2002/0172923 (2002-11-01), Strong et al.

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