Paper Title:
Development of Multisubstituted Apatites for Bone Reconstruction
  Abstract

Hydroxyapatite powders characterized by substitutions of Mg2+, SiO4 4-, CO3 2- ions in biological like amounts, in the crystallographic site of calcium and phosphates, ions in biological like amounts, in the crystallographic site of calcium and phosphorus, were successfully prepared by synthesis in aqueous medium. The chemico-physical properties of the powders were investigated through several analytical techniques, among them: XRD, FTIR, TG-DTA, ICP-OES, HR-TEM. The entering of silicon in the HA structure progressively reduces its crystallinity, as also carbonate ions do. Silicate and carbonate ions can enter simultaneously into the HA structure, in biological-like amounts, although they compete for the occupation of the phosphate site. Solubility tests, carried out at physiological conditions, reveal an increased calcium release in the HA powders containing silicon compared to the silicon-free HA.

  Info
Periodical
Key Engineering Materials (Volumes 361-363)
Main Theme
Edited by
Guy Daculsi and Pierre Layrolle
Pages
171-174
DOI
10.4028/www.scientific.net/KEM.361-363.171
Citation
E. Landi, S. Sprio, M. Sandri, A. Tampieri, L. Bertinetti, G. Martra, "Development of Multisubstituted Apatites for Bone Reconstruction", Key Engineering Materials, Vols. 361-363, pp. 171-174, 2008
Online since
November 2007
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$32.00
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