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Characterization of Type B Carbonate Apatite SinteredBodies

Published online by Cambridge University Press:  10 February 2011

N. Watanobe ,
T. Yoshioka ,
T. Ikoma ,
T. Kuwayama ,
T. Higaki ,
J.S. Cross  and
J. Tanaka
N. Watanobe
Affiliation:
Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550 JAPAN
T. Yoshioka
Affiliation:
Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550 JAPAN
T. Ikoma
Affiliation:
Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550 JAPAN
T. Kuwayama
Affiliation:
Kuraray Medical Inc., 2045-1 Sakazu, Kurashiki, Okayama 710-0801 Japan
T. Higaki
Affiliation:
Kuraray Medical Inc., 2045-1 Sakazu, Kurashiki, Okayama 710-0801 Japan
J.S. Cross
Affiliation:
Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550 JAPAN
J. Tanaka
Affiliation:
Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550 JAPAN
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Abstract

The dissolution kinetics of type B carbonate apatite (CAp) disks sintered atdifferent temperatures were investigated under acidic conditions similar toan osteoclastic desorption process in bone remodeling. The type B CAp disks,which were uniaxially pressed at 98MPa and sintered at temperatures of 600to 700 ºC, showed single crystalline phase and a high relative density of60-62 % compared to the stoichiometric density of 3.16g/cm3 ofhydroxyapatite (HAp). The dissolution rate of type B CAp disks sintered at650 ºC was 3.5 times faster than that of HAp disks at 650 ºC. These resultsindicate that the Type B CAp sintered disks show potential use as abiodegradable material for artificial bone.

Keywords

biomaterialsinteringbone

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References

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