Evaluación del sellado apical de sistemas resinosos en la obturación de conductos radiculares: ？Estudio in Vitro？

the purpose of this study is to compare the capacity of apical sealed between the cements ah plus, endo-rez and epiphany. sixty eight human single-rooted inferior premolars of recent extraction were included. the specimens were decrowned and instrumented with the crown-down technique until the #50 file. the teeth were randomly divided into three groups of 20 each one and obturated with the technique of lateral condensation. group 1: ah plus, group 2: endo-rez, group 3: epiphany and two groups of fourth specimens for control (positive and negative). the specimens were prepared to be submerged in 2% blue of methylene solution by 48 hours in to vacuum atmosphere. the results showed an apical sealed average of 0.27 mm for ah plus, 0.40 mm for the endo-rez and 0.41 mm for the epiphany. the anova test supplemented with the post-hoc tukey？s hsd test revealed best apical sealed for the group with ah plus (p <0.05) and no statically significant differences were found between other groups. under the conditions of this study, the ah plus cement showed the best conditions of apical sealed