ABSTRACT
An occlusal cavity was performed in each of the molars (Class I), of about 3 mm diameter and 4 mm depth. Then the samples were washed and slightly dried to proceed to the sealing of the cavities with the selected materials, following the manufacturer’s instructions. The 40 cavities were randomly divided into 4 different groups of 10 cavities each one: • Group A: The cavities were filled with Hercu-
lite® XRV Ultra™ at ambiance temperature,
in two increments, polymerizing each layer with a high-intensity cycle. Prepared samples were introduced into blue-
methylene for 24 H. Afterwards, amples were cleaned with water and then placed into resin. We then conducted a longitudinal-occluso-apical and mesial-to-distal cut, dividing the cavity into two parts. The samples were observed under an optic microscope, using a scale of three grades to characterize the observed filtration:
0: No filtration, 1: blue filtration on enamel wall 2: blue filtration on dentine wall and 3: blue filtration on the floor of cavity (Table 1).
