Analysis of Microleakage and Marginal Gap Presented by New Polymeric Systems in Class V Restorations: an in Vitro Study.

Objective: Evaluating the contraction of polymerization effect of silorane-based composite on dental interface in enamel. Materials and Methods: Eighty class V cavities were confectioned in forty extracted molar teeth and restored with different combinations of resinous-based and bond system. They were divided into the following groups: (G1) three-step etch-and-rinse adhesive system and methacrylate-based resin, (G2) two-step etch-and-rinse adhesive system and methacrylate-based resin, (G3) Filtek P90 self-conditioning adhesive system and methacrylate-based resin, (G4) Adper SE Plus self conditioning adhesive system and methacrylate-based resin, (G5) three-step etch-and-rinse adhesive system and silorane-based resin, (G6) two-step etch-and-rinse adhesive system and silorane-based resin, (G7) Filtek P-90 self-conditioning adhesive system and silorane-based resin, (G8) Adper SE Plus self-conditioning adhesive system and silorane-based resin. Results: Group 7 showed lower marginal leakage when compared with all other groups (p = 0.001). Conclusions: The results allows suggesting that silorane-based resinous system is adequate to promote more satisfactory marginal sealing than any other combination, since the system is combined with its own bond system. (c) 2019 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University.