Ready to use, radiopaque, premixed, calcium hydroxide paste with barium sulphate is a creamy paste used as a liner or as a temporary dressing. Owing to its high alkalinity (PH12), It chemically neutralizes the acids from cements, and prevent them from reaching the pulp. DPI Calcium Hydroxide Paste does not affect the quality of the filling when applied in thin layer and dried with an air jet so as to speed up its dehydration. It reduces the hypersensitivity of the dentine and helps the neo formation of secondary dentine.