Dycal® Radiopaque Calcium Hydroxide Composition is a rigid, self-setting material useful in pulp-capping, and as a protective base/liner under dental filling materials. It will not inhibit the polymerization of acrylic and composite restorations. Based on the original Dycal® formulation, Dycal® Radiopaque Calcium Hydroxide Composition provides potential for improved esthetics, as well as clinically proven performance. Dycal® offers improved physical properties with higher compressive strength and lower solubility than the original Dycal® product that serves as the standard in calcium hydroxide materials. The quick set time and excellent handling characteristics of Dycal® have helped make it the #1 selling calcium hydroxide composition.