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Improved corrosion resistance and antibacterial properties of composite arch-wires by N-doped TiO2 coating

机译：通过N掺杂TiO2涂层改善复合拱线的耐腐蚀性和抗菌性能

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摘要

In this paper, composite arch-wires (CAWs) coated with TiO2 and N-doped TiO2 nanocrystal thin films were fabricated. We found that the corrosion resistance and antibacterial properties of CAWs can be significantly improved by coating with the TiO2 nanocrystal thin film, especially using the N-doped TiO2 nanocrystal thin film, which is extremely important for their clinical application. The improved performances were confirmed by measuring potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS). The results revealed that N-doped TiO2 coated CAWs can prolong the wearing time and improve the security of the arch wire in the oral cavity. In addition, the antibacterial activities of the samples were tested against Streptococcus mutans by bacterial culture. It was found that the CAWs coated with N-doped TiO2 showed the highest antibacterial activity. Finally, the cytotoxicity of the samples was tested and evaluated, and the results showed that the CAWs modified with the N-doped TiO2 nanocrystal thin film have great potential in practical dental treatment.
机译：本文制造了涂有TiO 2和N掺杂TiO2纳米晶体薄膜的复合拱线（CAWS）。我们发现，通过用TiO2纳米晶体薄膜涂覆，特别是使用N掺杂的TiO2纳米晶体薄膜，可以显着改善Caws的耐腐蚀性和抗菌性能，这对于它们的临床应用非常重要。通过测量电位动力学偏振曲线和电化学阻抗光谱（EIS）来确认改进的性能。结果表明，N掺杂的TiO2涂覆的CAW可以延长磨损时间并改善口腔中拱线的安全性。此外，通过细菌培养对样品的抗菌活性进行测试。发现涂有N掺杂TiO 2的Caws显示出最高的抗菌活性。最后，测试并评价样品的细胞毒性，结果表明，用N掺杂的TiO2纳米晶体薄膜改性的Caws在实际牙科治疗中具有很大的潜力。

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  • 来源
    《RSC Advances》 |2017年第69期|共12页
  • 作者

    Liu Jiming; Lou Yixin; Zhang Chao; Yin Shuo; Li Hongmei; Sun Daqin; Sun Xinhua;

  • 作者单位

    Jilin Univ Coll &

    Hosp Stomatol Dept Orthodont 1500 Qinghua Rd Changchun 130021 Jilin Peoples R China;

    Jilin Univ Coll &

    Hosp Stomatol Dept Orthodont 1500 Qinghua Rd Changchun 130021 Jilin Peoples R China;

    Guangzhou Med Univ Stomatol Hosp Dept Prosthodont 39 Huangsha Rd Guangzhou 510140 Guangdong Peoples R China;

    Changchun Stomatol Hosp 2239 Dajing Rd Changchun 130021 Jilin Peoples R China;

    Jilin Univ Dept Mat Sci &

    Engn Minist Educ Key Lab Automobile Mat 5988 Renmin St Changchun 130025 Jilin Peoples R China;

    Jilin Univ Dept Mat Sci &

    Engn Minist Educ Key Lab Automobile Mat 5988 Renmin St Changchun 130025 Jilin Peoples R China;

    Jilin Univ Coll &

    Hosp Stomatol Dept Orthodont 1500 Qinghua Rd Changchun 130021 Jilin Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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