Non-surgical Treatment Approach of Hyperdivergent Class 2 with Retroclined Incisors

Professor and former Dean of the Department of Orthodontics, Yonsei University College of Dentistry, Seoul, South Korea. President of the World Implant Orthodontic Association (since 2024). Honorary President of the Korean Cleft Lip and Palate Association (since 2023). Leading authority in skeletal anchorage systems and temporary anchorage device (TAD) applications in orthodontics.

Over 25 years of clinical and academic experience treating complex orthodontic cases using miniscrew-driven biomechanics. Pioneer in demonstrating the miniscrew-assisted rapid palatal expander (MARPE) for adults, publishing the landmark MARPE study in American Journal of Orthodontics and Dentofacial Orthopedics (AJO-DO), which has been extensively cited internationally. Research focuses on clinical biomechanics of TAD applications, non-extraction treatment in adults, lingual orthodontic mechanics, surgery-first approaches using TADs, and bone/suture responses to orthodontic forces. Expert in total arch distalization, treatment of non-erupting teeth, and management of hyperdivergent facial patterns.

Selected as the 2025 Kokich-Shapiro Lecturer and 2025 Nanda Lecturer, prestigious honors in orthodontics. Adjunct Professor at the Department of Orthodontics, University of Pennsylvania (2010-2011, 2016-2019) and Temple University (2010-2011). Visiting Scholar at the Department of Biochemistry, University of Pennsylvania School of Dental Medicine (2002-2004) and the Children's Hospital of Philadelphia (2010-2011). Author of numerous peer-reviewed publications in leading orthodontic journals including multiple cover issues in AJO-DO. Editorial reviewer for AJO-DO, Angle Orthodontist, European Journal of Orthodontics, Progress in Orthodontics, Orthodontics and Craniofacial Research, Journal of Orthodontics, and Korean Journal of Orthodontics. International lecturer presenting worldwide at major orthodontic conferences.

DDS and PhD from Yonsei University College of Dentistry, Seoul, South Korea. Certificate in Orthodontics from Yonsei University Dental Hospital. International Member of the American Association of Orthodontists. Member of the World Federation of Orthodontists.