Vol. 2, Issue 4, Part A (2016)

Abstract: Aim: To evaluate the effect of two curing modes on the microleakage of a bulk-fill flowable composite resin, Surefil SDR Flow.Methodology: Extracted maxillary premolars were used for this study. Standardized class V cavities were prepared on buccal and palatal surfaces of each tooth and restored with the flowable composite, Surefil SDR Flow. Based on the curing protocol the teeth were divided into two groups. Restoration on the buccal surface of the teeth were subjected to low power polymerization, were grouped as the group I and the restorations on the palatal surfaces were subjected to soft start polymerization and were grouped as group II. All the samples were immersed in 0.5% basic fuchsin solution and was subjected to microleakage assessment. The samples were then sectioned, evaluated under a stereomicroscope and scored for microleakage. Analysis of variance (ANOVA) has been used to find the significance of study parameters between the groups. Results: Light curing with a Bluephase curing unit in the soft start mode showed significantly less microleakage (p<.019) as compared to the low power mode polymerization. Conclusion: Within the limitations of this study it was concluded that the soft start polymerization mode offered a distinctive advantage over the low power curing protocol using Bluephase curing unit