In vitro determination of direct antimicrobial effect of calcium hydroxide associated with different substances against Enterococcus faecalis strains - Weckwerth, Paulo Henrique; Siquinelli, Natália Bernecoli; Weckwerth, Ana Carolina Villasbôas; Vivian, Rodrigo Ricci; Duarte, Marco Antonio Hungaro (Dental Press Endodontics, 2011)