Correlation between polymerization stress and interfacial integrity of composites restorations assessed by different in vitro tests.

Objective: to correlate polymerization stress data obtained under two compliance conditions with those from different interfacial quality tests.

Methods: Six commercial composites were tested (Filtek Z250/3M ESPE, Heliomolar/Ivoclar Vivadent, Aelite LS Posterior/Bisco, Filtek Supreme/3M ESPE, ELS/Saremco and Venus Diamond/Heraeus Kulzer). Bond strength (BS) was evaluated by push-out test on slices of bovine dentin (2-mm thick) with tapered cavities.