Indiana University, College of Dentistry, Former Professor, Department of Orthodontics, Indiana University Former Researcher, Korea Air and Space Agency, Former Lecturer, Golman International Lingual Orthodontics Seminar Adjunct Professor, University of Michigan School of Dentistry Adjunct Professor, Samsung Medical Center Hallym University Outpatient professor at Gangnam Sacred Heart Hospital Outpatient professor at Kyunghee Medical Center Advisory professor at Ajou University College of Medicine Full member of

Now Michigan Prime Dental Clinic Director