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Setting time of MTA
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HOME > Restor Dent Endod > Volume 39(1); 2014 > Article
Reader's Forum Setting time of MTA
Yun-Chan Hwang
Restorative Dentistry & Endodontics 2014;39(1):78-78.
DOI: https://doi.org/10.5395/rde.2014.39.1.78
Published online: January 20, 2014

Chonnam National University, Korea.

©Copyights 2014. The Korean Academy of Conservative Dentistry.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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I have some difficulty in using MTA because of its slow setting time. How can I make the MTA set faster or regulate the setting time?
MTA is used widely in endodontic treatment as a pulp capping material, root-end filling material, and perforation repair.1 Although MTA has many favorable properties, long setting time is a clinical disadvantage. To overcome this problem many studies were performed. Hydration accelerators, such as citric acid, lactic acid, calcium chloride, and calcium lactate gluconate, were added during the mixing of MTA. In our previous study, hydration accelerators improved the setting time but the compressive strength decreased.2 In the cytotoxicity test, citric acid and calcium lactate gluconate showed favorable biocompatibility, while calcium chloride showed lower cell viability.3 Therefore, addition of these kinds of hydration accelerators to MTA fastens the setting time of MTA.
Recently, fast setting MTA like materials, such as Biodentine, was introduced. Biodentine showed fast setting time and higher compressive strength compared to MTA. In addition, Biodentine showed good pulp response comparable to MTA. These kinds of material are also useful alternatives for MTA.4
From Yun-Chan Hwang (Chonnam National University)
Readers' forum is edited by Professor Kyung-Mo Cho (Gangneung-Wonju National University).
  • 1. Bodrumlu E. Biocompatibility of retrograde root filling materials: a review. Aust Endod J 2008;34:30-35. PubMed
  • 2. Lee BN, Hwang YC, Jang JH, Chang HS, Hwang IN, Yang SY, Park YJ, Son HH, Oh WM. Improvement of the properties of mineral trioxide aggregate by mixing with hydration accelerators. J Endod 2011;37:1433-1436. ArticlePubMed
  • 3. Kang JY, Lee BN, Son HJ, Koh JT, Kang SS, Son HH, Chang HS, Hwang IN, Hwang YC, Oh WM. Biocompatibility of mineral trioxide aggregate mixed with hydration accelerators. J Endod 2013;39:497-500. ArticlePubMed
  • 4. Nowicka A, Lipski M, Parafiniuk M, Sporniak-Tutak K, Lichota D, Kosierkiewicz A, Kaczmarek W, Buczkowska-Radlińska J. Response of human dental pulp capped with biodentine and mineral trioxide aggregate. J Endod 2013;39:743-747. ArticlePubMed

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        Setting time of MTA
        Restor Dent Endod. 2014;39(1):78-78.   Published online January 20, 2014
        DOI: https://doi.org/10.5395/rde.2014.39.1.78
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