effect of different final irrigants on bond strength of resilon/epiphany and resilon/epiphany self-etch.

to assess the effects of different final irrigants on the bond strength of bonded root filling materials, epiphany/resilon and epiphany self-etch (se)/resilon.the root canals of eighty single-rooted extracted human teeth were prepared. after the smear layer was removed using 17% edta, the samples were randomly divided into eight groups. in groups 1 and 2, no additional irrigant was used after edta. in the other groups, final irrigation was performed with 2.5% naocl (groups 3 and 4), 2% chlorhexidine (chx) (groups 5 and 6), and normal saline (groups 7 and 8). the root canals were obturated with epiphany/resilon in groups 1, 3, 5 and 7 and obturated with epiphany se/resilon in groups 2, 4, 6 and 8. after the middle thirds of the roots were horizontally sectioned, the push-out bond strength of root filling materials was assessed using the universal testing machine. the data were analyzed using mann-whitney and kruskal-wallis tests. the significance level was set at p 0.05). considering the irrigation protocols, final irrigation with 2.5% naocl was associated with a significantly lower bond strength of both filling materials than the other irrigants (p 0.05).final irrigation of the root canals with 2.5% naocl following application of edta had a negative effect on the bond strength of epiphany and epiphany se obturation systems.