1. Department of ProsthodonticsShanghai Engineering Research Center of Advanced Dental Technology and MaterialsShanghai Research Institute of StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyNinth People's HospitalCollege of StomatologyShanghai JiaoTong University School of Medicine 639 Zhizaoju Road Shanghai 200011 P. R. China
2. Department of Orthopaedic SurgeryNinth People's HospitalShanghai JiaoTong University School of Medicine 639 Zhizaoju Road Shanghai 200011 P. R. China
3. Department of Oral and Maxillofacial‐Head and Neck OncologyShanghai Research Institute of StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyNinth People's HospitalCollege of StomatologyShanghai JiaoTong University School of Medicine 639 Zhizaoju Road Shanghai 200011 P. R. China