Dr. Lee is the director of the Smileagain orthodontic center in Seoul, Korea. He received his dental and orthodontic education at Yonsei University, Seoul, Korea and completed his master and Ph. D degrees in the same school. Dr. Lee is a visiting scholar in the department of orthodontics, school of dentistry at the University of North Carolina, USA and University of California, Los Angeles, USA. He is also a Clinical Professor in Department of Orthodontics, Yonsei University and Samsung Medical Center, Sungkunkwan University in Seoul, Korea. Dr Lee is Advisory Board Member and the former Secretary General of World Implant Orthodontic Association.