In vivo behaviour of three calcium phosphate cements and a magnesium phosphate cement |
| |
| Authors: | F. C. M. Driessens M. G. Boltong M. I. Zapatero R. M. H. Verbeeck W. Bonfield O. Bérmúdez E. Fernández M. P. Ginebra J. A. Planell |
| |
| Affiliation: | (1) Dept de Ciencia dels Materials i Enginyeria Metal.lúrgica, Universitat Politècnica de Catalunya, Avda. Diagonal 647, 08028 Barcelona, Spain;(2) Centro de Investigación y Desarrollo Aplicado, Centro Industrial Santiga, C/Argenters 6, 08130-Santa Perpètua de Mogoda, (Barcelona), Spain;(3) Laboratory for Analytical Chemistry, University of Ghent, Krijgslaan 281-S12, B-9000 Gent, Belgium;(4) Interdisciplinary Research Centre in Biomedical Materials, Queen Mary and Westfield College, Mile End Road, E1 4NS London, UK;(5) Present address: Dept de Fisica, Universidad del Cauca, Popayán, Colombia |
| |
| Abstract: | Three types of calcium phosphate cements and one magnesium phosphate cement were implanted subcutaneously in rats under exclusion of direct cellular contact. Retrieval times were either 1, 2, 4 or 8 weeks. Before and after retrieval the compressive strength, the diametral tensile strength, the quantitative chemical composition, the qualitative phase composition, the FTIR spectrum and the microstructure were determined. The three calcium phosphate cements maintained their strength during implantation. The phase DCPD was completely transformed into a Na- and CO3-containing apatite, the phases DCP and CDHA only partially. It could not be ruled out that OCP is also transformed into a bone-mineral-like apatite to a certain extent. That this latter process occurs much faster during the turn-over of living bone, is probably due to the very small crystal size of the OCP particles in bone. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
