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Heavy Metal Analysis of Ortho MTA and ProRoot MTA

Cited 36 time in Web of Science Cited 39 time in Scopus
Authors
Chang, Seok-Woo; Baek, Seung-Ho; Yang, Hyeong-Cheol; Seo, Deog-Gyu; Han, Seung-Hyun; Gu, Yu; Lee, Woocheol; Kum, Kee-Yeon; Bae, Kwang-Shik; Kwon, Ho-Bum; Lee, Yoon; Hong, Sung-Tae
Issue Date
2011-12
Publisher
ELSEVIER SCIENCE INC
Citation
JOURNAL OF ENDODONTICS, Vol.37, No.12, pp.1673-1676
Keywords
Arsenicinductively coupled plasma-optical emission spectrometryhexavalent chromiumleadProRoot MTApurityOrtho MTA
Abstract
Introduction: Recently, several kinds of mineral trioxide aggregate (MTA)-based products have been introduced in endodontics. Ortho MTA (BioMTA, Seoul, Republic of Korea) is one of those products, which was developed for retrograde filling, perforation repair, orthograde root canal obturation, and direct pulp capping. The inclusion of heavy metals in MTA-based materials is of concern because they come into direct contact with hard and soft tissues. The aim of this study was to investigate and compare the levels of arsenic (As), chromium (Cr), hexavalent chromium (Cr(6+)), and lead (Pb) in Ortho MTA and Pro Root MTA. Methods: One gram of each MTA was digested using a mixture of hydrochloric and nitric acids and filtered. The As, Cr, and Pb in the resulting filtrates were analyzed by inductively coupled plasma-optical emission spectrometry. The level of Cr(6+) was measured by the methods suggested in the Korean Standard L 5221. The results were statistically analyzed using the Mann-Whitney U test. Results: The concentration of As in Pro Root MTA was 1.16 ppm, but As was not detected in Ortho MTA. Cr(6+) and Pb were not detected in either MTA. Ortho MTA contained significantly less Cr than Pro Root MTA (P <.05). Conclusions: Ortho MTA and Pro Root MTA meet the ISO specification 9917-1 regarding the safety limits of As and Pb and are safe biomaterials when the purity of As, Cr(6+), and Pb is considered. (J Endod 2011;37:1673-1676)
ISSN
0099-2399
Language
English
URI
http://hdl.handle.net/10371/80461
DOI
https://doi.org/10.1016/j.joen.2011.08.020
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College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
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