1. Department of Periodontology Peking University School and Hospital of Stomatology and National Center of Stomatology and National Clinical Research Center for Oral Diseases and National Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing People's Republic of China
2. The Affiliated Hospital of Stomatology Zhejiang University School of Medicine and Key Laboratory of Oral Biomedical Research of Zhejiang Province Hangzhou People's Republic of China
3. First Clinical Division Peking University School and Hospital of Stomatology Beijing People's Republic of China