Paper Title:
Apatite-Forming Ability of Glass-Ceramics Containing Whitlockite and Diopside in a Simulated Body Fluid
  Abstract

Tricalcium phosphate (3CaO⋅P2O5, TCP) is known as a biodegradable material and already used clinically as important bone-repairing materials. However, the control of its bone-bonding ability, i.e. bioactivity, and biodegradability is not easy. On the other hand, diopside (CaO⋅MgO⋅2SiO2) ceramic shows a potential of direct contact with bone and high mechanical strength, but low biodegradability. We expected that a glass-ceramic containing TCP and diopside show high bioactivity and high mechanical strength, as well as biodegradability. Glasses with composition x(3CaO⋅P2O5)⋅(100-x) (CaO⋅MgO⋅2SiO2) (x = 0, 38, 50, 60 mass%) were prepared. They were pulverized and the compacts of the resultant powders were heated to obtain the glass-ceramics. Only diopside was precipitated at x = 0 in the glass composition, whitlockite (β-TCP) and diopside were at x = 38, 50 and 60, when the compacts were sintered at 1200 °C. The prepared glass-ceramics formed apatite on their surfaces in a simulated body fluid (SBF). This indicates that these glass-ceramics have a potential to show bioactivity.

  Info
Periodical
Key Engineering Materials (Volumes 309-311)
Main Theme
Edited by
Takashi Nakamura, Kimihiro Yamashita and Masashi Neo
Pages
341-344
DOI
10.4028/www.scientific.net/KEM.309-311.341
Citation
M. Kamitakahara, C. Ohtsuki, Y. Kozaka, M. Tanihara, T. Miyazaki, "Apatite-Forming Ability of Glass-Ceramics Containing Whitlockite and Diopside in a Simulated Body Fluid", Key Engineering Materials, Vols. 309-311, pp. 341-344, 2006
Online since
May 2006
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