Mineral Trioxide Aggregate(MTA)の物理化学的性質 : 生物学的特性と臨床応用

概要

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Mineral trioxide aggregate (MTA) is a powder that was developed by Torabinejad in 1993. It is composed of dicalcium silicate, tricalcium silicate, tricalcium aluminate, and other compounds, similar to Portland cement, and sets in the presence of moisture. The hydration of the powder results in the formation of a hard material 3CaO-2SiO_2-3H_2O gel and calcium hydroxide, and the pH of its surface after mixing increases to 12.5 due to the production of calcium hydroxide. The MTA creates a hard tissue on its surface in the same way as calcium hydroxide, and it also activates cells and promotes the regeneration of the original tissues. The exact mechanism of this biological feature is not well understood and further research is needed to elucidate it. A number of reports, however, have already shown that MTA is biocompatible and is very effective for such dental applications as pulp-capping, root-end filling, apexification, and perforation repair.
福岡歯科大学学会の論文
2008-09-30