OCT 25 - 27JEJU ISLAND KOREA

JEJU INTERNATIONAL CONVENTION CENTER

Transverse Orthodontics version 2023 :Self-Activating Expansion and Teardrop Archwire

Kee Joon Lee

Dr. Kee-Joon Lee is a professor of the Department of Orthodontics, Yonsei University College of Dentistry, Seoul, Korea. He received DDS and PhD degree at the Graduate school, College of Dentistry, Yonsei University. He completed the orthodontics specialty training in Yonsei University Dental Hospital. He was a visiting scholar at the Department of Biochemistry, University of Pennsylvania School of Dental Medicine in 2002-2004 and at the Division of Plastic Surgery, the Children’s Hospital of Philadelphia in 2010-2011. He was an adjunct professor at the Department of Orthodontics, University of Pennsylvania between 2016 and 2019 and at Temple University between 2010 and 2011. He has contributed many book chapters on biomechanics of miniscrew-driven orthodontics, non-extraction treatment in adults, up-to-date lingual orthodontic mechanics and surgery-first approached using TADs. He is the first who demonstrated the miniscrew-assisted rapid palatal expander (MARPE) for adults in AJO-DO, which was cited by many other authors. He has published many articles and case reports regarding the treatment of non-eruption, and total arch movement for hyperdivergent face in orthodontic journals including two cover issues in AJO-DO. His fields in research include clinical biomechanics regarding TADs application and the suture and bone responses to orthodontic stimulus. He has served as a reviewer in major orthodontic journals, including AJO-DO, Angle Orthodontists and European Journal of Orthodontics. He has been invited to many international orthodontic conferences around the world.
E-mail: orthojn@yuhs.ac

Professional Positions

International member of American Association of Orthodontists
Member of World Federation of Orthodontists
President, Korean Cleft Lip and Palate Association (2021 - present)
Editor-in-Chief, Journal of Korean Dental Science (2014 - present)
Vice president, Korean Officials Dental Association (2020 - present)
Director, Korean Association of Orthodontists (2020 - present)
Congress president, the 12th World Implant Orthodontic Conference (2021)

Lecture Description

Transverse discrepancy is now well recognized by majority of orthodontists. A miniscrew-assisted rapid palatal expander (MARPE) has been considered an only solution for orthopedic expansion in adults. However, activation of the jackscrew is largely challenging without someone else’s assistance. Moreover, according to the latest clinical studies, it is now known that the non-surgical orthopedic expansion is not always successful. Hence, some updates in the transverse occlusion must be demonstrated. In this presentation, a new idea on the self-activation of the MARPE will be introduced. A relevant appliance designs such as prominence of the jackscrew body, guide hole and hexagonal screw keys will be explained based on the biomechanical standpoint. Again for the unsuccessful cases, a remedy for the arch constriction of the counterpart is necessary. The ‘teardrop’ archwire is easily fabricated on the chairside and is expected to transduce constriction force to the rearmost molar. The rationale of the archwire will be explained based on ‘force-driven approach’. Simple hands-on practice for the installation and activation of the MARPE, along with the fabrication of the archwire using a modified archwire turret will help participants’ understanding on the force system. Overall, the supplementary ideas and devices would be able to resolve clinical problems faced in the daily practice for the transverse control.

Pre-Congress: Hands on Course