00000ctm a22000003a 4500 UP-1685523046126252738 Buklod 20130920165448.0 m |o d | cr ||||||||||| 130920s xx d r |||| u| (iLib)UPMNL-00012963789 UPDent eng LG 995.3 2011 D4 S25 Salvador, Anna Dominique M. The effect of flowable composite and mode of polymerization on the microleakage of class v composite resin restorations Anna Dominique M. Salvador, Melissa Francesca C. Bantegui, Michelle Sunico-Segarra. vii 48 leaves Seminar Paper--Doctor of Dental Medicine--University of the Philippines Manila. #aPolymerization shrinkage remains the biggest challenge in resin-based composite restorations. Polymerization shrinkage can bring about microleakage and eventual failure of the restoration. Soft-start polymerization and the use of flowable composite an initial layer have been suggested to address microleakage. A experiment on different technique combination of light curing and filling technique which may indicate what method is most ideal in reducing microleakage in composite restorations was performed. Methods: Forty-eight adult human posterior teeth were selected and prepared w/ uniform class V cavity preparations. The samples were randomly assigned to four groups and were restored with or without flowable composite; and w/ conventional or soft-start polymerization. The samples were subjected to a dye penetration test. Data was subjected to kruskal-Wallis Test. Results: Conventional light curing with and without flowable composite when compared to soft-start polymerizationb with and without flowable composite has no significant difference when it comess to reducing microleakage in Class V composite restorations. Conclusion: The use of flowable composite as an initial layer and varying modes of polymerization does not significantly reduce microleakage in Class V composite restoration when compared to conventional filling and light-curing techniques. Bantegui, Melissa Francesca C. Sunico-Segarra, Michelle (Co-author). UPMNL DENT LG 995.3 2011 D4 S25 Thesis