Mineral Trioxide Aggregate (MTA) is a biocompatible calcium-silicate dental material used for pulp capping, root repair, perforation sealing and other endodontic/operative applications. Traditional MTA cements are mixed with water and harden over hours.Light-curable MTA-like materials (also called resin-modified calcium silicate or light cure MTA) change that by including methacrylate resin components that polymerize when exposed to a dental curing light (like similar to composites).some products have indications limited to cavity lining or indirect pulp capping (not always direct pulp capping or pulpotomy without a base) — check the product’s instructions.Cavity liner under restorationsIndirect pulp cappingProtective base under restorative materialsPerforation repair or similar applications (depending on product)