Dentistry – Apparatus – Broach
Patent
1996-06-19
1998-04-07
O'Connor, Cary E.
Dentistry
Apparatus
Broach
A61C 502
Patent
active
057356904
ABSTRACT:
The length of the active part of each drill of the set is inversely proportional to the diameter of the cutting edge of each drill, that prevents the drills of the set being too much engaged in the coronary canal, since the depth of the working depends with precision from the used drill.
REFERENCES:
patent: 4661061 (1987-04-01), Martin
patent: 4850867 (1989-07-01), Senia et al.
patent: 5026284 (1991-06-01), Martin
patent: 5035617 (1991-07-01), McSpadden
patent: 5257934 (1993-11-01), Cossellu
Maillefer Instruments S.A.
O'Connor Cary E.
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