National Clinical Research center of Stomatology 3 articles published in JoVE Medicine Real-Time Dynamic Navigation System for the Precise Quad-Zygomatic Implant Placement in a Patient with a Severely Atrophic Maxilla Yihan Shen*1, Qinggang Dai*1, Baoxin Tao*1, Wei Huang2, Feng Wang2, Kengliang Lan1, Yuanyuan Sun1, Xiaowan Ling1, Lijun Yan1, Yueping Wang1, Yiqun Wu1 1The 2nd Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, 2Department of Dental Implantology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology Here, we present a protocol to achieve precise quad-zygomatic implant placement in patients with severely atrophic maxilla using a real-time dynamic navigation system. Medicine Isolation and Cultivation of Mandibular Bone Marrow Mesenchymal Stem Cells in Rats Yueyang Hong*1, Hongyuan Xu*1, Yiling Yang1, Siru Zhou1, Anting Jin1, Xiangru Huang1, Qinggang Dai2, Lingyong Jiang1 1Center of Craniofacial Orthodontics, Department of Oral and Cranio-maxillofacial Science, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research center of Stomatology, 2The 2nd Dental Center, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research center of Stomatology This article presents a method that combines whole bone marrow adherence and flow cytometry sorting for isolating, cultivating, sorting, and identifying bone marrow mesenchymal stem cells from rat mandibles. Biology Skeletal Phenotype Analysis of a Conditional Stat3 Deletion Mouse Model Yiling Yang*1, Qianye Chen*2, Siru Zhou1, Xinyi Gong1, Hongyuan Xu1, Yueyang Hong1, Qinggang Dai3, Lingyong Jiang1 1Center of Craniofacial Orthodontics, Department of Oral and Cranio-maxillofacial Science, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research center of Stomatology, 2Department of Stomatology, Dalian Medical University, 3The 2nd Dental Center, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research center of Stomatology This protocol describes a canonical method to understand the critical genes controlling osteoclast activity in vivo. This method uses a transgenic mouse model and some canonical techniques to analyze skeletal phenotype.