Use of instruments in the canals followed the balanced forces technique. Hand instruments were used in the crown and apex, using Flex-R files in the first and second series, each instrument was irrigated with NaOCl.
Los conductos se instrumentaron mediante la técnica de fuerzas balanceadas corono-apical con instrumentos manuales limas Flex-R primera y segunda series y se irrigó entre cada instrumento con NaOCl.