1989–1995 Dental Medicine Study at Göttingen University, Germany. 1995–1997 Training at the Dental Prosthodontics Dept., Göttingen University, Germany. 1997 Ph Degree at Göttingen University, Germany. 1997–2001 Assistant Professor, Department of Prosthodontics, School of Dentistry, Chosun University, Korea. 2002 Clinical Professor, Department of Computer Restoration, School of Dentistry, Zürich University, Switzerland. 2003 Assistant Professor, Department of Prosthodontics, School of Medicine, Ewha University, Korea. 2004–present Professor, Wonju College of Medicine, Yonsei University, Korea Book publications: 2008: Flapless Implantology (Daehan Narae Publishing), 2010: Flapless Implantology (English Edition, Quintessence Publishing Germany), 2012: Flapless Implantology (French Edition, Quintessence Publishing France), 2013: Dental Prosthodontics (Daehan Narae Publishing), 2015: Digital Flapless Implantology (JeeSung Publishing), 2020: Digital Full Arch (Quintessence Publishing Korea), 2022: Digital Full Arch (English 1st Edition, Quintessence Publishing Korea).