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Characterization of Type B Carbonate Apatite Sintered Bodies

Published online by Cambridge University Press:  10 February 2011

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 at different temperatures were investigated under acidic conditions similar to an osteoclastic desorption process in bone remodeling. The type B CAp disks, which were uniaxially pressed at 98MPa and sintered at temperatures of 600 to 700 ºC, showed single crystalline phase and a high relative density of 60-62 % compared to the stoichiometric density of 3.16g/cm3 of hydroxyapatite (HAp). The dissolution rate of type B CAp disks sintered at 650 ºC was 3.5 times faster than that of HAp disks at 650 ºC. These results indicate that the Type B CAp sintered disks show potential use as a biodegradable material for artificial bone.

Type
Research Article
Copyright
Copyright © Materials Research Society 2011

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References

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