Chonbuk National University, School of dentistry

Chonbuk National University Graduate School, Master of Science

The Pankey Institute CI, CII, CII-E, E1, E2, E3, E4, Becker's Master Course.
Korean Academy of Adhesive dentistry, member board directors
American Equilibriation Society, member
Korean Acedemy of Implant Dentistry, member

Amerian Academy of Cosmetic Dentistry, member
Korean Adademy of stomatognathic function and occlusion, member
President of AWON Academy