The Effects of Different Rinsing Water Temperatures and Preheated Composites on Microleakage of Composite Restorations With Two Bonding Agents
Objective: The aim of this study was to evaluate the effect of different rinsing water temperatures and composites on microleakage of cl V restorations with two different bonding agents.
Methods and Materials: In this study, eighty cavities were prepared on buccal and lingual surfaces of forty molars. Single bond and Prime and Bond NT bonding agents were used. The teeth were divided into four groups of ten teeth. G1: After acid etch, cavities were rinsed with 23˚C water and filled with 23˚C composite resin.G2: Rinsing water of 55˚C – composite resin of 55˚C.G3: Rinsing water of 55˚C – composite resin of 23˚C.G4: Rinsing water of 23˚C – composite resin of 55˚C. The specimens were immersed in a 0.5% basic fuchsine dye. Microleakage scores were analysed with the Kruskall-Wallis, Mann-Whitney U, and Wilcoxon tests.
Results: There were significant differences between the microleakage of specimens prepared with Single bond and Prime and Bond NT only in group 1. There were no significant differences be
tween the microleakage of groups rinsed with different water temperatures (p>0.05). Finally, there were significant differences between the unheated and preheated composite groups (p>0.05).
Conclusions: Preheating of composite is a valuable method in increasing adaptability and thus reducing microleakage of resin composite restorations.