Thermal Characterization of Hap/TCP Bioceramics with Variable Phase Ratio

European Cells and Materials 2010
Liene Plūduma, Kristīne Šalma-Ancāne, Līga Bērziņa-Cimdiņa

Biphasic calcium phosphate (BCP) bioceramics belong to a group of bone substitute biomaterials that consist of a mixture of hydroxyapatite (HAp), Ca10(PO4)6(OH)2), and beta-tricalcium phosphate (β-TCP), Ca3(PO4)2 [1]. BCP is obtained when a synthetic calcium-deficient apatite (CDA) is sintered at temperature above 700°C. The Ca-deficiency depends on the method of preparation of HAp including technological parameters such as synthesis pH and temperature [2]. HAp/β-TCP ratio determines the reactivity of BCP bioceramics (as the extent of dissolution in body fluid) [3]. Dissolution of HAp after implantation is too low to achieve the optimal results, but the dissolution rate of β-TCP ceramics is too fast for bone bonding [4]. The aim of this study was to investigate the influence of pH of synthesis media on the degree of Ca-deficiency of powders and characterized the thermal behaviour of HAp/β-TCP bioceramic samples.

Keywords
biphasic calcium phosphates, chemical synthesism, thermal behaviour
Hyperlink
http://www.ecmjournal.org/journal/supplements_volume.htm

Plūduma, L., Šalma-Ancāne, K., Bērziņa-Cimdiņa, L. Thermal Characterization of Hap/TCP Bioceramics with Variable Phase Ratio. European Cells and Materials, 2010, Vol. 20, No. 1, pp.203-203. ISSN 1473-2262.

Publication language
English (en)