Complex sentence: MTA is used for creating an apical plug during apexification, repairing root perforations during root canal therapy and treating internal root resorption and can be used as both a root-end filling material and pulp capping material.
Split into simpler sentences: MTA is used for creating an apical plugs during apexification, repairing root perforations during root canal therapy, and treating internal root tooth resorption. This can be used for root-end filling material and as pulp capping material.