alexa Porous ZrO2 bone scaffold coated with hydroxyapatite with fluorapatite intermediate layer.
Engineering

Engineering

Bioceramics Development and Applications

Author(s): Kim HW, Lee SY, Bae CJ, Noh YJ, Kim HE,

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Abstract Highly porous zirconia (ZrO(2)) bone scaffolds, fabricated by a replication technique using polymeric sponge, were coated with hydroxyapatite (HA). To prevent the chemical reactions between ZrO(2) and HA, an intermediate fluorapatite (FA) layer was introduced. The strength of the porous ZrO(2) was higher than that of pure HA by a factor of 7, suggesting the feasibility of ZrO(2) porous scaffolds as load-bearing part applications. The coated HA/FA layer, with a thickness of about 30 microm, was firmly adhered to the ZrO(2) body with a bonding strength of 22MPa. The osteoblast-like cells were attached and spread well on the coating layer throughout the porous scaffolds. The alkaline phosphatase activity of the proliferated cells on the HA/FA coated ZrO(2) was comparable to that on pure HA and higher than that on pure ZrO(2).
This article was published in Biomaterials and referenced in Bioceramics Development and Applications

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