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Crystalline phases involved in the hydration of calcium silicate-based cements: Semi-quantitative Rietveld X-ray diffraction analysis

Grazziotin-Soares, Renata, Nekoofar, Mohammad, Davies, Thomas, Hübler, Roberto, Meraji, Naghmeh and Dummer, Paul 2019. Crystalline phases involved in the hydration of calcium silicate-based cements: Semi-quantitative Rietveld X-ray diffraction analysis. Australian Endodontic Journal 45 (1) , pp. 26-32. 10.1111/aej.12226

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Abstract

Chemical comparisons of powder and hydrated forms of calcium silicate cements (CSCs) and calculation of alterations in tricalcium silicate (Ca3SiO5) calcium hydroxide (Ca(OH)2) are essential for understanding their hydration processes. This study aimed to evaluate and compare these changes in ProRoot MTA, Biodentine and CEM cement. Powder and hydrated forms of tooth coloured ProRoot MTA, Biodentine and CEM cement were subjected to X-ray diffraction (XRD) analysis with Rietveld refinement to semi-quantitatively identify and quantify the main phases involved in their hydration process. Data were reported descriptively. Reduction in Ca3SiO5 and formation of Ca(OH)2 were seen after the hydration of ProRoot MTA and Biodentine; however, in the case of CEM cement, no reduction of Ca3SiO5 and no formation of Ca(OH)2 were detected. The highest percentages of amorphous phases were seen in Biodentine samples. Ettringite was detected in the hydrated forms of ProRoot MTA and CEM cement but not in Biodentine.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Dentistry
Publisher: Wiley
ISSN: 1329-1947
Date of First Compliant Deposit: 30 January 2018
Date of Acceptance: 27 June 2017
Last Modified: 28 Jun 2019 10:05
URI: http://orca-mwe.cf.ac.uk/id/eprint/108589

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