Mineral trioxide aggregate (MTA) is a dental material that is used in a variety of procedures, including:

• Pulp capping: This is a procedure that is used to cover the exposed pulp of a tooth. MTA is a good choice for pulp capping because it is biocompatible and stimulates the growth of new tissue.
• Apexification: This is a procedure that is used to close the apex of a tooth that has not fully developed. MTA is a good choice for apexification because it is radiopaque and seals the tooth from the surrounding tissues.
• Repair of root perforations: This is a procedure that is used to repair a hole in the root of a tooth. MTA is a good choice for repair of root perforations because it is biocompatible and seals the hole from the surrounding tissues.
• Root-end filling: This is a procedure that is used to fill the end of a root canal. MTA is a good choice for root-end filling because it is biocompatible and stimulates the growth of new tissue.