Abstract:Introduction: Composite-resin is widely used as a restorative material in dental practice on a daily basis when it comes to an aesthetic consideration. The purpose of this study is to investigate and compare the light penetration capabilities of three light curing units (LCU) through layers of composite resin using a radiometer. Method: Composites resin discs (2mm thick with 8 mm diameter) were cured out of seven different shades. Each specimen were used as a barrier, and a light source from three different L… Show more
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