Analysis of four gutta-percha techniques used to fill mesial root canals of mandibular molars - Marciano, M. A.; Ordinola-Zapata, R.; Cunha, T. V. R. N.; Duarte, Marco Antonio Hungaro; Cavenago, B. C.; Garcia, Roberto Brandão; Bramante, Clóvis Monteiro; Bernardineli, Norberti; Moraes, Ivaldo Gomes de (International Endodontic Journal, 2011)