Effect of Streptococcus mutans on the Corrosion Behavior of Nano-Coating Ni-Cr Dental Alloy

被引：8
作者：
Ameer, M. A. [1 ]
Fekry, A. M. [1 ]
Bahr, May M. A. [2 ]
机构：
[1] Cairo Univ, Fac Sci, Dept Chem, Giza 12613, Egypt
[2] Natl Res Ctr, 33El Bohouth St, Dokki 12311, Egypt
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2017年 / 12卷 / 10期
关键词：
Streptococcus mutans; chitosan; TiO2; Hydroxyapatite; Wirolloy; ELECTROCHEMICAL-BEHAVIOR; MAGNESIUM ALLOYS;
D O I：
10.20964/2017.10.33
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Corrosion behavior of chitosan, hydroxyapatite and TiO2 nanoparticles (CS/TiO2/HA) nano-layer NiCr (Wirolloy) casting dental alloy and unlayerd one were studied with time after exposing the tested alloys to fluoridated artificial saliva media without and/or with streptococcus mutans (S.mutans) Techniques used for corrosion examination were electrochemical impedance spectroscopy (EIS) and potentiodynamic techniques. SEM and EDX analysis was studied to characterize the layerd film in absence or presence of bacteria. All measurements indicated that CS/TiO2/HA nano-coatingr has high antibacterial effectiveness. Surface coverage increases with immersion time reaching a constant value after 72h and it was found to be 0.987 and 0.925 for CS/TiO2/HA Nano-coatingr calculated from EIS and potentiodynamic techniques, respectively, after 6 days in presence of bacteria indicating the inactive property of the layer.
引用
收藏
页码：9652 / 9664
页数：13
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