Evaluation of apical cavity preparation with a new type of ultrasonic diamond tip - Bernardes, Ricardo Affonso; Moraes, Ivaldo Gomes de; Garcia, Roberto Brandão; Bernardineli, Norberti; Baldi, Járcio Victório; Victorino, Fausto Rodrigo; Vasconcelos, Bruno Carvalho de; Duarte, Marco Antonio Hungaro; Bramante, Clóvis Monteiro (Journal of Endodontics, 2007)