1. Department of Oral and Maxillofacial Surgery, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China;
2. Department of Prothodontics, Ninth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China;
3. Department of Periodontology, Ninth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China;
4. Department of Oral and Maxillofacial Surgery, Shandong Linyi People's Hospital, Linyi, China;
5. Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, China