ABSTRACT
We present a study on marginal filtration in 20 occlusal cavities in human molars. The cavities were filled with restorative materials: adhesive OptiBond™ XTR (kerr) and SonicFill™(kerr), with different adhesive technique. In 10 cavities selective etching of the enamel was performed during 15 seconds, and in other 10 cavities a self-etching adhesive was applied in the enamel and dentin. After filling the cavities with one single layer of composite, teeth were introduced into blue-methylene for 24 hours. Afterwards, the samples were cleaned and placed into resin. Occluso-apical and mesial-distal longitudinal cut was then performed on each sample, dividing the cavity into two parts. The samples were observed under an optic microscope and images were taken. Observation showed lesser blue-methylene filtration in teeth whit selective etching technique.
