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The Chinese Journal of Dental Research

Year 2000
Volume 3 , Issue 2

Pages: 49 - 52

Characterizations of Three Surface-Modified Titantium Oxide Films

Ge Wang, DDS, PhD/Ziang-Rong Cheng, DDS

Objective: To seek a new methodof titanium passive treatment by combined anodic oxidation and thermal air treatment, which could increase the corrosion resistance and biocompatibility of pure titanium. Materials and Methods: Characteristics of Titanium sheets with natural oxide film (NOF), anodic oxide film (AOF), or heated anodic oxide film (HAOF) were compared and tested by x-ray diffractrometer, eectrochemical corrosive method, and contact angle device. Results: HAOF had excellent corrosion resistance and greater crystallinity, indicating the crystal structure had changed. AOF had better hydrophily. Conclusion: This in vitro study showed that thermal air treatment, after anodic oxidation, was a reliable method for creating a passive, protective film on the titanium surface, which ould greatly enhance the corrosion-resistance and crystallinity.



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