Adjunct professor of dentistry at Hallym University Medical Center Osstem Implant Clinical Instructor Former outpatient dental professor at Seoul Asan Hospital Former adjunct professor of dentistry at Bundang CHA Hospital Former Clinical Lecturer of Oral and Maxillofacial Surgery, Boramae Hospital, Seoul National University Former Clinical Assistant Professor, Oral and Maxillofacial Surgery, Bundang CHA Hospital, CHA Medical University Full member, Korean