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Apatite deposition on thermally and anodically oxidized titanium surfaces in a simulated body fluid

Paper ID Volume ID Publish Year Pages File Format Full-Text
12122 779 2003 7 PDF Available
Title
Apatite deposition on thermally and anodically oxidized titanium surfaces in a simulated body fluid
Abstract

By application of a special specimen set-up, thermally oxidized titanium specimen pairs were found able to deposit apatite on the contact surfaces after soaking for 7 days in the simulated body fluid (SBF) of Kokubo's recipe. The specimens oxidized at 400°C and 500°C showed the highest ability of apatite deposition. Both increase and decrease in oxidation temperature from this range caused the apatite deposition ability to decrease. The specimen without treatment failed to deposit any apatite. Specimens anodically oxidized in electrolytes of H3PO4, H2SO4 and acetic acid exhibited very low ability of apatite deposition. Furthermore, the specimen thermally oxidized at 400°C was even able to help the surfaces of PTFE and silicone deposit apatite in the PTFE–Ti and silicone–Ti pairs. This in vitro experimental results indicated that the difference in apatite deposition among various titanium oxides does exist and can be distinguished by applying the present specimen set-up. The mechanism of the apatite deposition on the contact surfaces was discussed in relation to the passive dissolution of titanium in SBF. The release of titanium hydroxide and OH− ions from the titanium surfaces and their accumulation inside the confined space between the two contact surfaces were suggested to be responsible for the apatite deposition.

Keywords
Titanium; Oxidation; Bioactivity; Apatite
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Apatite deposition on thermally and anodically oxidized titanium surfaces in a simulated body fluid
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 24, Issue 25, November 2003, Pages 4631–4637
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us