Friction properties of orthodontic brackets coated with TiO
2-x
N
y
Li Na, Zhou Hai-jing, Han Bing, Zhang Ying-jie, Cao Bao-cheng
Chinese Journal of Tissue Engineering Research . 2014, (
47
): 7621 -7626 . DOI: 10.3969/j.issn.2095-4344.2014.47.014