Marginal leakage of class V cavities restored with silorane-based and methacrylate-based resin systems

The aim of this study was to compare the microleakage of class V cavities restored by silorane resin with those restored by the methacrylate resin system. Sixty standardized class V cavities were prepared on premolars. The teeth were restored with Filtek™ Silorane and Silorane™ System Adhesive, Filtek™ Silorane and Adper™ Easy One and Filtek™ Supreme XT and Adper™ Easy One. The area and the depth of dye leakage were measured. Considering dye leakage area, the best results were achieved in group I (mean- M=0.114±0.083 mm2), then in group III (M=0.384±0.480 mm2) and finally in group II (M=5.389±6.587 mm2). Considering the depth of dye leakage, there was a significant difference between group I (mean rank- m.r.=1.23±0.44 mm) and II (1.98±0.83 mm), group II and III (1.23±0.40 mm). In this study silorane composite and its adhesive showed less microleakage than the methacrylate composite, and it showed compatibility only with its assigned adhesive. Clinical Significance: Less microleakage of silorane restorations could provide better and long lasting composite fillings.