1. School of Stomatology, Key Laboratory of Oral Diseases of Gansu Province, Northwest Minzu University, Lanzhou 730000, China
2. School/Hospital of Stomatology Lanzhou University, Lanzhou 730000, China
3. Lanzhou Stomatology Hospital, Lanzhou 730000, China
4. State Key Laboratory of Solid Lubrication, , Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
5. Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering, Yantai 264006, China