中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (47): 7621-7626.doi: 10.3969/j.issn.2095-4344.2014.47.014

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

TiO2-xNy薄膜托槽的表面摩擦性能

李  娜1,周海静1,韩  冰1,张颖杰2,曹宝成3   

  1. 1西北民族大学口腔医学院,甘肃省兰州市  730000
    2兰州大学第一医院,甘肃省兰州市  730000
    3兰州大学口腔医学院,甘肃省兰州市  730000
  • 修回日期:2014-10-23 出版日期:2014-11-19 发布日期:2014-11-19
  • 通讯作者: 曹宝成,博士,兰州大学口腔医学院,甘肃省兰州市 730000 并列通讯作者:周海静,教授,西北民族大学口腔医学院,甘肃省兰州市 730000
  • 作者简介:李娜,女1981年生,甘肃省兰州市人,汉族,2011年兰州大学口腔医学院毕业,硕士,主要从事口腔功能材料研究。
  • 基金资助:

    中央高校基本科研业务费专项资金(31920130068);中央高校基本科研业务费专项资金(31920130032);甘肃省自然科学基金(1208RJZA236);西北民族大学科研创新团队项目(xbmzcxtd-2011-1)

Friction properties of orthodontic brackets coated with TiO2-xNy

Li Na1, Zhou Hai-jing1, Han Bing1, Zhang Ying-jie2, Cao Bao-cheng3   

  1. 1College of Stomatology, Northwest University for Nationalities, Lanzhou 730000, Gansu Province, China
    2First Affiliated Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
    3College of Stomatology, Lanzhou University, Lanzhou 730000, Gansu Province, China
  • Revised:2014-10-23 Online:2014-11-19 Published:2014-11-19
  • Contact: Cao Bao-cheng, M.D., College of Stomatology, Lanzhou University, Lanzhou 730000, Gansu Province, China Corresponding author: Zhou Hai-jing, Professor, College of Stomatology, Northwest University for Nationalities, Lanzhou 730000, Gansu Province, China
  • About author:Li Na, Master, College of Stomatology, Northwest University for Nationalities, Lanzhou 730000, Gansu Province, China
  • Supported by:

    the Fundamental Research Funds for the Central Universities, No. 31920130068, 31920130032; the Natural Science Foundation of Gansu Province, No. 1208RJZA236; the Scientific Innovation Team Program of Northwest University for Nationalities, No. xbmzcxtd-2011-1

摘要:

背景:课题组前期开发的TiO2-xNy薄膜托槽具有优异的抗菌性能和生物安全性能。
目的:考察TiO2-xNy薄膜托槽的表面摩擦性能。
方法:采用射频磁控溅射制备TiO2-xNy薄膜托槽(0.022″),用X射线衍射、扫描电镜等方法表征托槽表面的理化性能。分别检测金属MBT直丝弓托槽、TiO2-xNy薄膜托槽与镍钛圆丝0.012、0.014、0.016间的最大静摩擦系数及动摩擦系数。
结果与结论:TiO2-xNy薄膜托槽表面为锐钛矿结构特征峰,表面光洁均匀,致密且结晶度好。干燥状态下,TiO2-xNy薄膜托槽的最大静摩擦系数和动摩擦系数均小于金属MBT直丝弓托槽;湿润状态下,TiO2-xNy薄膜托槽的最大静摩擦系数和动摩擦系数均小于金属MBT直丝弓托槽,但差异无显著性意义。表明纳米TiO2-xNy薄膜减少了托槽和弓丝间的摩擦力,为降低牙齿移动过程中摩擦力提供了新的方向。


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


全文链接:

关键词: 生物材料, 口腔生物材料, 纳米TiO2-xNy, 金属MBT直丝弓托槽, TiO2-xNy薄膜托槽, 摩擦系数, 甘肃省自然科学基金

Abstract:

BACKGROUND: In previous experiments, TiO2-xNy-coated bracket has been confirmed to have excellent antibacterial properties and biological safety performance.
OBJECTIVE: To study the friction properties of orthodontic brackets coated with TiO2-xNy film.
METHODS: TiO2-xNy film was prepared by radiofrequency magnetron sputtering on MBT bracket (0.022″). The TiO2-xNy-coated brackets were analyzed by X-ray diffraction and scanning electron microscopy observations. The coefficient of static friction and coefficient of kinetic friction between the wires (0.012″, 0.014″, 0.016″) and orthodontic brackets were calculated.
RESULTS AND CONCLUSION: TiO2-xNy film on the bracket was of anatase structure, which was compact and had good crystallinity. Under dry condition, the coefficient of static friction and kinetic friction of the brackets coated with TiO2-xNy were less than those of ordinary brackets; under wet condition, the coefficients of static friction and kinetic friction of the brackets coated with TiO2-xNy were less than those of ordinary brackets, but the difference was not statistically significant. Nano-TiO2-xNy film can reduce the friction between bracket and archwire, which will offer a novel opportunity to significantly reduce the friction during tooth movement.


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


全文链接:

Key words: nanoparticles, friction, orthodontic extrusion

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