Calcium Phosphate Bioceramics with Various Porosities and Dissolution Rates

Porous bioceramics, such as hydroxyapatite (HA), tricalcium phosphate (TCP), and biphasic HA/TCP, were fabricated using the polyurethane sponge technique. The porosity of the ceramics was controlled by a multiple coating of the porous body. When a porous body was produced by a single coating, the po...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2002-12, Vol.85 (12), p.3129-3131
Main Authors: Kwon, Soon-Ho, Jun, Youn-Ki, Hong, Seong-Hyeon, Lee, In-Seop, Kim, Hyoun-Ee, Won, Ye Yeon
Format: Article
Language:English
Subjects:
Applied sciences
bioceramics
Biological and medical sciences
Building materials. Ceramics. Glasses
calcium phosphate
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
Medical sciences
Miscellaneous
pores/porosity
strength
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Technical ceramics
Technology. Biomaterials. Equipments
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Summary:Porous bioceramics, such as hydroxyapatite (HA), tricalcium phosphate (TCP), and biphasic HA/TCP, were fabricated using the polyurethane sponge technique. The porosity of the ceramics was controlled by a multiple coating of the porous body. When a porous body was produced by a single coating, the porosity was ∼90%, and the pores were completely interconnected. When the sintered body was coated five times after the porous network had been made, the porosity decreased to 65%. As the porosity decreased, the strength increased exponentially. The TCP exhibited the highest dissolution rate in a Ringer's solution, and the HA had the lowest rate. The biphasic HA/TCP showed an intermediate dissolution rate.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.2002.tb00599.x