HYDROCAL LC IS A UNIQUE LIGHT-CURED, RADIOPAQUE, DENTINADHERING LINER AND BASE MATERIAL CONTAINING CALCIUM HYDROXIDE AND CALCIUM HYDROXYAPATITE IN A URETHANE DIMETHACRYLATE (UDMA) BASE.IT IS A HIGHLY FILLED RESIN (FOR A LINER) WITH MINIMAL SHRINKAGE AND WATER ABSORPTION. HYDROCAL LC HAS A HIGHER VISCOSITY THAN CONVENTIONAL LINERS, ELIMINATING THE NEED FOR A BALL-TYPE APPLICATOR. ITS SUPERIOR STRENGTH AND WATER INSOLUBILITY MAKE HYDROCAL LC THE MATERIAL OF CHOICE UNDER COMPOSITE, AMALGAMS, GOLD, AND ETC