Abstract:MTA was developed in the year 1993 as root-end filling material as it possesses the ideal characteristics of orthograde or retrograde filling materials. An ideal material should seal the pathways of communication between root canal system and surrounding tissues, be nontoxic, biocompatible, insoluble in tissue fluids and dimensionally stable. MTA is also been used for pulp capping, pulpotomy, apical barrier formation in teeth with open apexes, repair of root perforations, and root canal filling. The main aim of this article is to review the numerous studies done on various aspects of the material. This article describes the composition, setting reaction, mechanism of action, properties, clinical application and disadvantages of MTA.
Key words: Apical barrier, Mineral Trioxide Aggregate, ProRoot MTA,Portland cement, Root end filling
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