1. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases; West China Hospital of Stomatology, Sichuan University; Chengdu China
2. Department of Conservative Dentistry and Endodontics; West China Hospital of Stomatology, Sichuan University; Chengdu China
3. Department of Oral and Maxillofacial Surgery; West China Hospital of Stomatology, Sichuan University; Chengdu China