Effect of surface roughness of Ti, Zr, and TiZr on apatite precipitation from simulated body fluid

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Effect of surface roughness of Ti, Zr, and TiZr on apatite precipitation from simulated body fluid

Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/88789

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Title: Effect of surface roughness of Ti, Zr, and TiZr on apatite precipitation from simulated body fluid
Author(s): Chen, Xiaobo; Nouri, Alireza; Li, Yuncang; Lin, Jianguo; Hodgson, Peter D.; Wen, Cui'e
Abstract: Some of the critical properties for a successful orthopedic or dental implant material are its biocompatibility and bioactivity. Pure titanium (Ti) and zirconium (Zr) are widely accepted as biocompatible metals, due to their non-toxicity. While the bioactivity of Ti and some Ti alloys has been extensively investigated, there is still insufficient data for Zr and titanium zirconium (TiZr) alloys. In the present study, the bioactivity, that is, the apatite forming ability on the alkali and heat treated surfaces of Ti, Zr, and TiZr alloy in simulated body fluid (SBF), was studied. In particular, the effect of the surface roughness characteristics on the bioactivity was evaluated for the first time. The results indicate that the pretreated Ti, Zr and TiZr alloy could form apatite coating on their surfaces. It should be noted that the surface roughness also critically affected the bioactivity of these pretreated metallic samples. A surface morphology with an average roughness of approximately 0.6 µm led to the fastest apatite formation on the metal surfaces. This apatite layer on the metal surface is expected to bond to the surrounding bones directly after implantation.
Publication type: Journal article
Source: Biotechnology and Bioengineering, Vol. 101, no. 2 (Oct 2008), pp. 378-387
Publication year: 2008
FOR Code(s): 06 Biological Sciences; 09 Engineering; 10 Technology
Keyword(s): Apatite; Biomaterials; SBF; Simulated body fluid; Surface roughness; Titanium; Titanium-zirconium alloy
Publisher: John Wiley & Sons
ISSN: 0006-3592
Publisher URL: http://dx.doi.org/10.1002/bit.21900
Research Projects: Titanium alloy scaffolds for osseointegration implant materials, Australian Research Council grant number DP0770021
Peer reviewed