Analysis of Arsenic in Gray and White Mineral Trioxide Aggregates by Using Atomic Absorption Spectrometry

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• 作者：Tsunenori Matsunaga ; DDS ; PhD<sup>&lowast ; sup> ; Masaki Tsujimoto ; DDS<sup>&lowast ; sup> ; Tadashi Kawashima ; DDS ; PhD<sup>&dagger ; sup> ; Yasuhisa Tsujimoto ; DDS ; PhD<sup>&dagger ; sup> ; Mamoru Fujiwara ; DDS ; PhD<sup>&lowast ; sup> ; Atsushi Ookubo ; DDS ; PhD<sup>&Dagger ; sup> ; Yoshihiko Hayashi ; DDS ; PhD<sup>&lowast ; sup><sup> ; sup><sup>hayashi@nagasaki-u.ac.jp" class="auth_mail" title="E-mail the corresponding authorsup>
• 关键词：Arsenic ; endodontic practice ; MTA ; standard value
• 刊名：Journal of Endodontics
• 出版年：2010
• 出版时间：December 2010
• 年：2010
• 卷：36
• 期：12
• 页码：1988-1990
• 全文大小：71 K

文摘

The aim of the present study was to investigate whether the concentration of arsenic (As) released from gray or white mineral trioxide aggregates (MTAs) met the requirement of the International Standards Organization (ISO) for dental cements.

sSec_2">Methods

spara0015">Sample preparations were carried out according to the ISO methods. After centrifugation of dissolved samples, As (III) concentration in the final supernatant was analyzed by a high-performance atomic absorption spectrophotometer.

sSec_3">Results

spara0020">As (III) concentration from both MTAs was much less than the required value (2 ppm) for dental cements regulated by the ISO. An experiment simulating pulp capping by using MTA revealed that As concentration was also below the standard value of the ISO. The As concentration in white MTA was lower than the value (10 ppb) recommended for tap water and environmental standards.

sSec_4">Conclusions

spara0025">The present in vitro studies demonstrated that there is no threat to patient health in using commercially available brands of MTA for endodontic practices.