A Comparison of Three Ni-Ti Rotary Instruments in
2007-3-1 · 2007-3-1 · The teeth were randomly divided into three groups according to the instruments used: Hero642 (Micro-Mega, France); RaCe (FKG, Lachaux-de-Fonds, Switzerland); ProTaper (Dentsply-Maillefer, Switzerland). All canals were instrumented to WL at a speed of 250 rpm and a torque-control level of three, using an 8:1 reduction hand-piece powered by an electric motor (TCM Endo; Nouvag, …
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