In Vitro Evaluation of Marginal Sealing Ability of Bulk Fill Flowable Composite Resins

Aim: The purpose of this study is to analyse marginal sealing ability of bulk fill flowable composite resins. Materials and Methods: A standard class V cavity (3 mm mesiodistal width, 3 mm occlusogingival height, and 1.5 mm axial depth) will be prepared at the cementoenamel junction (CEJ) on the facial surface of eighty human teeth with a 0.5 mm wide 45° beveled enamel margin and a 90° cervical margin; the gingival margin will be placed 1.0 mm below the CEJ. The specimens were restored with different flowable composite resins:Surefil SDR flow (Dentsply, York, PA, USA), TetricEvo flow bulk fill (Ivoclarvivadent), Filtek bulk fill (3M ESPE), Xtra base (voco). The specimens will be immersed in a 0.5% basic fuchsin dye solution for 24 hours and sectioned. The degree of microleakage was checked under stereomicroscope. . The data was statistically analysed by Kruskall-Wallis test. Results: There was non-significant difference in marginal sealing ability of different bulkfill flowable composite resins at enamel and dentin. Conclusion: The marginal sealing ability of bulkfill composite resin was not influenced by the type of substrate or flowable composite resin.