Online Dental Education Platform

Presents a new
Paradigm of Orthodontic

About the

Prof. Kee-Joon Lee, DDS, PhD.

Professor, Department of Orthodontics, College of
Dentistry, Yonsei University

He received DDS and PhD degree at the Graduate school, College of Dentistry, Yonsei University and 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 is the first who demonstrated the miniscrew-assisted rapid palatal expander (MARPE) for adults in AJO-DO, and 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.

· 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)
· Advisory committee member of World Implant Orthodontics Association
· Founding member/Executive director, Korean Association of Lingual Orthodontists

· The Application of TADs for Gummy Smile Correction. In: Jae-Hyun Park, Temporary Anchorage Devices in Clinical Orthodontics. (Wiley, 2020)

· The Role of Research in Orthodontic Specialty Education. In: Eliades T, Athanaciou AE, Orthodontic Postgraduate Education: A Global Perspective. (Thieme Publishers, 2015)

· The Biomechanics of Miniscrews-From Single Tooth Control to Whole Arch Movement. In; KC Choy, CJ Burstone, The Biomechanical Foundation of Clinical Orthodontics. (Quintessence, 2015)

· Application of TADs in Lingual Orthodontics: A Modified Segmented Arch Approach / Pre-orthodontic Orthognathic Surgery (POGS) using TADs-Evidences and Applications. In; Ki-Beom Kim, Temporary Skeletal Anchorage Devices, A Guide to Design and Evidence-Based Solution. (Springer. 2014)

· Lingual Orthodontics and the use of Miniscrew Implants for the Mangement of Class II malocclusion in Adults. In; Papadopoulos MA, Skeletal Anchorage in Orthodontic Treatment of Class II Malocclusion. (Mosby Elsevier. St Louis, Missouri, 2014; 211-218 )

· Miniscrew Application for Strategic Nonextraction Treatment (Temporary Anchorage Device). In; Greenfield RL, Non Ex Factors. (DaehanNarae Publishing Inc. Seoul, 2010; 449-472 )

· Biomechanical Principles in Miniscrew-Driven Orthodontics. In; Ravindra Nanda, Temporary Anchorage Devices in Orthodontics. (Mosby Elsevier. St Louis, Missouri, 2009; 93-144)

2022. 5. 21  AAO 2022, American Association of Orthodontists, MI, USA
Facts about Maxillary Expansion in Adults: Fracture or Remodeling? (invited lecture)

2021. 8. 2  The 12th National Congress of the Association of Philippines Orthodontists (online)
Integrated Biology and 3-D Mechanics for Non-Eruption/Impacted Teeth (invited lecture)

2021. 3. 15  The 17th Turkish Orthodontic Society International Virtual Congress (webinar)
Biomechanics for root movement and occlusal reconstruction – theory and reality (invited lecture)

2020. 10. 4  The 9th International Orthodontic Congress (on/offline), Yokohama, Japan
Is age a limiting factor in adult orthopedics for Class III and asymmetry? Quest for suture biology (invited lecture)

2020. 5. 27  University of Southern California Special Lecture (webinar)
Adult transverse orthopedics using MARPE: the origin, myths and truths (invited lecture)

2020. 2. 20-2. 21  The 14th Annual Conference of Saudi Orthodontic Society, Ad Diriyah, Saudi Arabia
Total arch intrusion for hyperdivergent Class II face: an alternative to conventional orthopedics (invited lecture)
Up-to-date compliance-free orthodontics using buccal miniscrews (half-day post congress course)

2020. 1. 17-1. 18  Oman Dental College Special Lecture, Muscat, Oman
Kee-Joon Lee. Non-surgical treatment for facial and occlusal restructuring (2-days invited lecture)

AAO 2022 Annual Session

Opening Lecture

Prof. Kee-Joon Lee gave an opening lecture at the AAO, May21, 2022.


New Horizon
in Orthodontics

Presents a new paradigm of orthodontic treatment.

A series of lectures explain the recognition and diagnosis of the concept of lateral relationship that is easily overlooked in orthodontic clinical practice, and the application of biomechanics and actual treatment for treatment.


USD 799 (24 lessons in total)

Online Lecture Table of Contents

1.    How come the case is never finished?
2.    What happens if the problem is not properly diagnosed?
3.    Why minimal surgery?
4.    How do we diagnose transverse problem?
5.    Minor crowding is hardly a problem of incisors
6.    Midline deviation is hardly a unilateral problem
7.    Extraction in severe crowding can be jeopardizing
8.    Digitalized VTO for conversion of extraction to nonextraction
9.    Recession on incisor causes a butterfly effect in the 2nd molar
10.  Message from suture biology-Is repeated expansion justified?
11.  Message from suture biology-Maxillary expansion in adults: rapid or slow?
12.  Biomechanical background-Does it have to be ‘MARPE’?
13.  Biomechanical background-What is the role of the miniscrew?
14.  How about bone-borne RPE?: strengths and limitations
15.  How to maintain profile in severe crowding cases
16.  Is molar intrusion the first step of open bite correction?
17.  How to fabricate and install MARPE
18.  Is phase I treatment worthless if mandible grows in Class III?
19.  What is the final step of nonextraction treatment in children?
20.  Trick or treat: severe open bite in adolescents
21.  Is ‘dental decompensation’ possible in nonsurgical treatment of Class III?
22.  Critical first step of surgery-first orthodontics
23.  Critical first step of nonsurgical treatment of facial asymmetry
24.  In case of failure, do we go straight for surgery?

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We're the Global Online Education Platform for dentists worldwide.

We provide dentists with various clinical courses in each field of dentistry such as Orthodontics, Periodontology, Endodontics, Implant, and Digital Dentistry, and more. We present the courses in basic, intermediate, and advanced courses depending on the level of academic achievements.

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