1 Department of Oral & Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, China.
2 Department of Human Anatomy & Histology and Embryology, Peking University Health Science Center, China.
3 Department of Oral Pathology, Peking University School and Hospital of Stomatology, China. Electronic address: gaoyan0988@163.com.
4 Department of Human Anatomy & Histology and Embryology, Peking University Health Science Center, China. Electronic address: zhangwg@bjmu.edu.cn.
5 Department of Oral & Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, China. Electronic address: gyyu@263.net.