PMID: 15348169Sep 7, 2004Paper

pH-metric study of the setting reaction of monocalcium phosphate monohydrate/calcium oxide-based cements

Journal of Materials Science. Materials in Medicine
Josiane NuritPhilippe Boudeville

Abstract

Hydraulic calcium phosphate cements (CPCs) that are used as osseous substitutes, set by an acid-base reaction between an acid calcium phosphate and a basic calcium salt (often a phosphate). In order to gain a better understanding of the setting of the monocalcium phosphate monohydrate-calcium oxide cement that we developed and in the aim to improve its mechanical properties, the setting reaction was studied by pH-metry. The two methods described in the literature were used. In the first, cement samples were prepared then crushed after different storage periods at 37 degrees C, 100% RH. The powder was then immersed in pure water with stirring and the pH was measured after equilibration. In the second technique, the starting materials were poured into water while stirring and the pH were followed over time. The two methods gave different results. The first procedure provided information concerning the pH of the surrounding liquid following the partial dissolution of the cement components, rather than any information about pH changes during setting. The second method is more appropriate to follow the pH variations during setting. In this second procedure, the effects of different parameters such as crushing time, stirring rate, li...Continue Reading

Citations

Jan 24, 2007·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Zhiguang Huan, Jiang Chang
Jan 1, 2013·Journal of Functional Biomaterials·Sergey V Dorozhkin
Aug 31, 2015·Materials·Zeeshan SheikhMichael Glogauer
Jan 19, 2016·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Priscila F FranczakEnori Gemelli

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