[Li, Wanying; Dai, Yilong; Dai, YL] Xiangtan Univ, Sch Mat Sci & Engn, Xiangtan 411105, Hunan, Peoples R China.
[Chen, Chang] Changsha Stomatol Hosp, Dept Endodont, Changsha 410004, Hunan, Peoples R China.
[Zhang, Dechuang; Lin, Jianguo; Lin, JG] Xiangtan Univ, Key Lab Low Dimens Mat & Applicat Technol, Minist Educ, Xiangtan 411105, Hunan, Peoples R China.
[Cheng, Jun] Northwest Inst Nonferrous Met Res, Shaanxi Key Lab Biomed Met Mat, Xian 710016, Peoples R China.
[He, Yixuan] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China.