Cobalt-chromium alloy with zirconium nitride coating influences adhesion properties of bacteria

doi:10.3969/j.issn.2095-4344.2015.25.019

Abstract

Abstract:

BACKGROUND: Bacterial adhesion is closely related to the surface properties of cobalt-chromium alloys, and therefore, the surface modification technology has become the focus of research in this area.
OBJECTIVE: To verify whether the cobalt-chromium alloy with zirconium nitride coating can improve the bacterial adhesion of metal denture materials.
METHODS: Magnetron sputtering deposition method was used to plate zirconium nitride film on the surface of cobalt-chromium alloys (experimental group), and cobalt-chromium alloy specimens uncoated served as control group. Streptococcus mutans, Candida albicans, and Actinomyces viscosus were respectively inoculated on the two kinds of test specimen, and at end of culture, the colony counting was done.
RESULTS AND CONCLUSION: In the bacterial adhesion test, the number of colonies of three kinds of bacteria in the experimental group was significantly lower than that in the control group (P < 0.05). The number of bacterial adhesion in the control group was significantly higher than that in the experimental group. These findings indicate that the cobalt-chromium alloy covered with zirconium nitride coating can significantly reduce the adhesion amount of Streptococcus mutans, Candida albicans and Actinomyces viscosus, and thus improve bacterial adhesion properties of cobalt-chromium alloys.

中国组织工程研究杂志出版内容重点：生物材料；骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性；组织工程

Key words: Chromium Alloys, Zirconium, Bacterial Adhesion, Candida albicans, Actinomyces viscosus, Surface Properties

CLC Number:

R318

Sang Zhuo, Fu Yu, Chen Dong, Gu Yu-di, Chen Xiang-tao. Cobalt-chromium alloy with zirconium nitride coating influences adhesion properties of bacteria [J]. Chinese Journal of Tissue Engineering Research, 2015, 19(25): 4033-4037.

Figures/Tables 2

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