1. State Key Laboratory of Orval Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology Sichuan University Chengdu China
2. Periodontology and Implant Dentistry Division, Faculty of Dentistry The University of Hong Kong Hong Kong China
3. Sichuan Provincial Engineering Research Center of Oral Biomaterials, Sichuan University Chengdu China