J. Phys. IV France
Volume 123, March 2005
Page(s) 229 - 232

J. Phys. IV France 123 (2005) 229-232

DOI: 10.1051/jp4:2005123040

Development and study of cement and a phosphocalciques ceramic as medical use

E. Abbaoui1, A. Essaddek1, E. Mejdoubi1, L.L. Elansari1, M. Elgadi1 and B. Hammouti2

1  Laboratoire de Chimie du Solide Minéral, Dépt. de Chimie, Faculté des Sciences, Univ. Med 1$^{er}$, Oujda, Maroc
2  Laboratoire de Chimie des Eaux et Corrosion, Faculté des Sciences, Univ. Med 1er, Oujda, Maroc

The hydroxyapatite (Ca10(PO4)6(OH)2) has a structure and a chemical composition very close to those of the mineral phase of calcified tissues. It is thus used for a long time in orthopedic and odontological surgery. In the past few years, cements which evolve toward the hydroxyapatite have been the object of several studies. This communication reports the synthesis and the study of new phosphocalcic cement, which evolves after hardening, towards a hydroxyapatite. The cement is composed of tricalcium phosphate a type ($\alpha $-Ca3(PO 4)2), calcium hydroxide (Ca(OH)2) and phosphoric acid (H3PO4). The sintering of hardened cement, leads to ceramics having a structure and chemical composition close to those of the bone's mineral phase. The trisodium phosphate is used as melting agent to increase the hardness of ceramics and to decrease the sintering temperature, without affecting the physicochemical properties of ceramics.

© EDP Sciences 2005