Professor, Department of Orthodontics School of Dentistry, Kyungpook National University, Daegu, Korea.
Educational background and Curriculum Vitae
1974-1980 DDS, Dental College, Kyungpook National University
1980-1981 Intern, KNU Dental Hospital
1981-1983 Ortho Resident, KNU Dental Hospital
1983–1986 Lieutenant in Navy (marine corps)
1986 – present Full time instructor – professor
1991-1992 Visiting researcher, Faculty of Dentistry, Osaka University
1996-1997 Visiting researcher, University of British Columbia, Canada
2001-2003 Dean, KNU Dental school

2009-present Active member, Angle Society (East Branch)
2015-2017 President, World Society of Lingual Orthodontists
2016 – 2018 President, Korean Association of Orthodontists