Calcium hydroxide powder is a white powder that has many uses in dentistry, including: \nRoot canal treatment \nUsed as a temporary root canal dressing to eliminate microorganisms and prevent reinfection. It can also be used as an intracanal medicament, root canal sealer, or in weeping canals. \nPulp capping \nUsed as a pulp capping material for direct and indirect pulp capping during restorative treatment of teeth with deep dentinal caries. \nCavity lining \nUsed as a cavity lining material during restorative treatment of carious teeth. \nDental traumatology \nUsed to manage root perforations, fractures, resorption, and dental injuries such as tooth avulsion and luxation.