Understanding and Clinical Application of Mineral Trioxide Aggregate
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Àå¼®¿ì(Chang Seok-Woo) - Kyung Hee University School of Dentistry Department of Conservative Dentistry
Abstract
MTA has been introduced in endodontics in early 1990s, and has been successfully used for root end filling, perforation repair, one-visit apexification, pulp capping and so on. This clinical success of MTA was known to be based on the good biocompatibility and sealing ability of MTA. MTA is known to be not only biocompatible but also promote the formation of mineralized tissues. MTA is mainly composed of tricalcium silicate and dicalcium silicate. The hydration reaction of MTA produces calcium silicate hydrate and calcium hydroxide. These hydration products are believed to have a role in good sealing abilities of MTA. Furthermore, MTA could seal the contacting dentinal tubules through the process known as
¡°Biomineralization¡±. However, MTA has shortcomings such as long setting time, difficult handling properties, and possibility of tooth discoloration. Clinicians should understand the advantage of MTA and its mechanism, as well as its shortcomings.
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KMID :
1035020140150010012
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