1. State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, Ren Min Nan Rd, Chengdu, Sichuan 610041, China
2. College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
3. Med-X Center for Materials, Sichuan University, Chengdu 610065, China