Department of Oral and Maxillofacial Surgery, Ninth People’s Hospital, Collage of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China;
Department of Oral Implantology, Hospital Affiliated Qingdao University School of Medicine, Qingdao, China;
Department of Prosthodontics, Ninth People’s Hospital, Collage of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China;
The Intensive Care Unit, The Central Hospital of Taian, Qingdao, China;
Implant; Anterior; Maxilla; Bone; Resorption; Implant; Placement; Site; Non-Implant; Placement; Site;