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The impact of zirconium oxide nanoparticles on the hydration chemistry and biocompatibility of white Portland cement

The impact of zirconium oxide nanoparticles on the hydration chemistry and biocompatibility of white Portland cement

Li, Qiu, Deacon, Andrew D. and Coleman, Nichola J. (2013) The impact of zirconium oxide nanoparticles on the hydration chemistry and biocompatibility of white Portland cement. Dental Materials Journal, 32 (5). pp. 808-815. ISSN 0287-4547 (Print), 1881-1361 (Online) (doi:10.4012/dmj.2013-113)

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Abstract

Zirconium oxide (ZrO2) has been nominated as a radiopacifying agent for use in MTA-like Portland cement-based root-filling materials. This research examines the impact of 20 wt% ZrO2 nanoparticles in the size range 50 to 75 nm on the early hydration chemistry of white Portland cement. Nano-ZrO2 was found to accelerate the degree of hydration by 26% within the first 24 h by presenting efficient nucleation sites for the precipitation and growth of the early C-S-H gel products. The presence of nano-ZrO2 was also found to divert the fate of the aluminium-bearing reaction products by lowering the ettringite to monosulphate ratio, reducing the size of the ettringite crystals and by increasing the Al:Si ratio of the C-S-H gel phase. The chemical and microstructural changes conferred upon the cement matrix by the nano-ZrO2 particles had a positive impact on in vitro biocompatibility with respect to MG63 osteosarcoma cells (via MTT assay).

Item Type: Article
Additional Information: [1] Received: 14 April 2013. [2] Accepted: 16 July 2013. [3] First published: 1 October 2013. [4] Dental Materials Journal is the official journal of the Japanese Society for the Dental Materials and Devices.
Uncontrolled Keywords: white Portland cement, cement hydration, radiopacifier, zirconium oxide, nanoparticles, nuclear magnetic resonance spectroscopy
Subjects: Q Science > QD Chemistry
R Medicine > RK Dentistry
Faculty / Department / Research Group: Faculty of Engineering & Science > Department of Pharmaceutical, Chemical & Environmental Sciences
Related URLs:
Last Modified: 06 Dec 2016 12:02
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/11821

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