Biocompatibility of a titanium–aluminum nitride film coating on a dental alloy
نویسندگان
چکیده
The purpose of this investigation was to develop a coating technique and to study the characteristics of titanium–aluminum nitride [(Ti,Al)N] films deposited on a base-metal alloy (Wiron88R) substrate. Titanium–aluminum nitride thin films were deposited on the alloy surface using a reactive radiofrequency sputtering method. The electrochemical properties of three specimens with and without coating treatment were evaluated. The biocompatibility of the three specimens was tested using a subcutaneous implantation test. Data were analyzed using the t-test with a significance level of pb0.05. Specimens coated with (Ti,Al)N films exhibited significantly improved corrosion resistance ( pb0.05). The results from biocompatibility testing, based on tissue reactions at 2 and 12 weeks, revealed substantially enhanced biocompatibility for (Ti,Al)N-coated samples when compared to uncoated samples. This demonstrates that the (Ti,Al)N film can significantly improve electrochemical and biocompatibility properties of the base metal alloy. D 2004 Elsevier B.V. All rights reserved.
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