Ellagic acid on the quality of the adhesive interface of class I composite resin restorations after aging

Objective: To evaluate the effect of ellagic acid on inhibition matrix metalloproteinase by analyzing quality adhesive interface with bond strength measures in periods 24 hours and six months storage. Method: 40 healthy human third molars were prepared class I cavities (5x4x3mm). The teeth divided into four experimental groups: Group 1- without application storage time hours; 2- acid/24 G3- acid/six months; 4- months. Then, restored Single Bond Universal Z350 composite resin, previous acid. Subsequently, hourglass-shaped specimens obtained subjected to (BS) test (n = 10) a universal testing machine. was performed after For standard evaluation 3) samples infiltrated silver nitrate placed developing solution for analysis Scanning Electron Microscope (SEM). data analyzed Kruskal-Wallis non-parametric test, showing statistically significant difference. Results: highest values found 24-hour groups followed nano-infiltration, G1 G2 showed lower infiltration than G3 G4. Conclusion: did not affect BS system analyzed, regardless time.