Comparative evaluation of micro-leakage and shear bond strength between a self adhesive flowable composite resin and self etch based flowable composite restorative material

Background: An in vitro evaluation and comparing the  microleakage and shear bond strength between a self- adhesive flowable composite resin (Dyad Flow)  and self-etch based flowable composite restorative material ( Nano Filtek Z 350XT) Materials and methods: A total of sixty specimens were prepared from extracted teeth, which were divided into two groups. For microleakage analysis, Group I consisting of thirty teeth which were further divided into two subgroups of fifteen teeth each that is Group IA and Group IB, on which standard class V cavity was prepared and restored with Dyad Flow and Nano Filtek Z 350XT respectively. The prepared specimens were immersed in 0.6% aqueous Rhodamine B dye for 24 hours. The sectioned samples were examined under a Confocal Microscope at 10 X magnification and microleakage scores were analyzed statistically using Mann-Whitney U test. For shear bond strength evaluation, Group II consisting of thirty teeth, which were subdivided into two subgroups of fifteen teeth each that is Group IIA and Group IIB.