Instruments were used in the canals with Pro-Taper system Dentsply-Maillefer at a 350 rpm speed. Irrigation was achieved with 2 mL of 2.5% sodium hypochlorite NaCOl and 2 mL of 17% ethylene-diamine-tetraacetic acid EDTA applied between use of each instrument. Preparation was carried out until reaching the point of a F3 file at 2 mm before reaching working length.
Los conductos se instrumentaron con el sistema ProTaper Dentsply-Maillefer a una velocidad de 350 rpm irrigando con 2 mL de hipoclorito de sodio NaOCl al 2.5% y 2 mL de ácido etilendiaminotetraacético EDTA al 17% entre cada instrumento, la preparación se realizó hasta la lima F3 a 2 mm antes de la longitud de trabajo.