Li, Q. and Coleman, N.J. (2013) Early hydration of white Portland cement in the presence of bismuth oxide. Advances in Applied Ceramics, 112 (4). pp. 207-212. ISSN 1743-6753 (Print), 1743-6761 (Online) (doi:https://doi.org/10.1179/1743676112Y.0000000058)

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Abstract

Mineral trioxide aggregate (MTA) is a clinical product comprising a mixture of 80 wt-% Portland cement and 20 wt-% bismuth oxide, which is used as a root-filling material in dentistry. The influence of bismuth oxide on the hydration reactions of Portland cements is not well understood. In this study, the impact of 20 wt-% replacement of bismuth oxide on the hydration of white Portland cement was monitored by powder X-ray diffraction (XRD), Si-29 and Al-27 magic angle spinning nuclear magnetic resonance spectroscopy (MAS NMR) and transmission electron microscopy (TEM). The findings of this research have confirmed that bismuth oxide is an inert additive in white Portland cement, which does not participate in the hydration reactions.

Item Type:	Article
Additional Information:	[1] Published by Maney Publishing on behalf of the Institute of Materials, Minerals and Mining (IOM3).
Uncontrolled Keywords:	mineral trioxide aggregate, Portland cement, bismuth oxide, nuclear magnetic resonance spectroscopy, hydration
Subjects:	Q Science > QD Chemistry R Medicine > RK Dentistry
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science > School of Science (SCI)
Related URLs:	Publisher Publisher
Last Modified:	17 Oct 2016 09:12
URI:	http://gala.gre.ac.uk/id/eprint/11820

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