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Compend Contin Educ Dent. 2013 Feb;34(2):e25-32.

Mineral trioxide aggregate: a review of physical properties.

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  • 1Department of Conservative Dentistry and Endodontics, KDDC, Mathura, UP, India.


The purpose of this two-part series is to review the composition, properties, products, and clinical aspects of mineral trioxide aggregate (MTA) materials. Electronic search of scientific papers from January 1991 to May 2010 was accomplished using PubMed and MedLine search engines to include relevant scientific citations from the peer-reviewed journals published in English. MTA is a refined form of the parent compound, Portland cement (PC). It demonstrates a strong biocompatible nature owing to the high pH and its ability to form hydroxyapatite. MTA materials provide a better seal than traditional endodontic materials as observed in dye leakage, fluid filtration, protein leakage, and bacterial penetration leakage studies, and it has been recognized as a bioactive material. Currently a variety of MTA commercial products are available, including Proroot Gray MTA and White MTA both from DENTSPLY Tulsa Dental Specialties (, and MTA Angelus (Angelus, Although these materials are indicated for various dental uses/applications, long-term in-vivo clinical studies are still needed to claim the same. This first of this series highlights and discusses the composition, physical, and/or chemical properties of MTA. A subsequent article will offer an overview of the material aspect (commercial products) and clinical considerations for MTA materials.

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