Dr. Hwa Sung Chae. D.D.S, M.S.D ,Ph.D. Clinical Professor at the Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine. (2024~) Diplomate, American Board of Orthodontics. (2013~) Education Seoul National Univ. School of Dentistry, Molecular Genetics, Korea, Ph.D. (2010-2016) UCLA, School of Dentistry, USA. Orthodontics Residency. (2006-2009) UCLA, School of Dentistry, Oral Biology, USA, M.S (2006-2008) Univ of Rochester, Eastman Dental Center, TMJD Fellowship. (2005-2006) Seoul National Univ. School of Dentistry, Korea, D.D.S. (1997-2001) Seoul National Univ. Department of Biology, Korea, B.S.(1993-1997) Academic Activity Diplomate, American Board of Orthodontics. (2013~) Board-certified orthodontist, Ministry of health and welfare, Korea (2018~) Trustee member, Korean Association of Orthodontists (2020~ )