Mineral Trioxide Aggregate (MTA) is a dental material used in vital pulp therapy and some endodontic procedures. Mineral Trioxide Aggregate (MTA) was named in 1998 by Dentsply Tulsa Dental (ProRoot MTA, Dentsply Tulsa Dental, Johnson City, TN, USA) as developed by Dr. Torabinejad. MTA was originally developed for perforation repair and root end filling. MTA was a refined (reagented) Portland Cement Type I with Bismuth Trioxide for radiopcity. MTA has expanded its uses to one-visit apexification, pulp capping and root canal obturation and so on. MTA is expanding the meaning from Portland Cement to all kinds of Mineral Aggregate including Limestone cement, Calcium Aluminate Cement, Magnesium Silicate Cement, Lithium Silicate Cement as natural ceramic cements widely. MTA is the name of speific product material, which is Dental Material of mineal aggregate and radiopacifier of Bismuth Trioxide.
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