Dr. Cheol-Ho Paik is a private practitioner at SAI orthodontic clinic in Seoul, Korea. He is also a clinical professor in the department of orthodontics in Seoul National University, school of dentistry. In the U.S., he is a member of Southern California Angle Society, as well as a visiting faculty at the Dept. of Orthodontics at UCLA and UCSF. He graduated from Seoul National University, school of dentistry, and he received orthodontic training and PhD degree at the Dept. of Orthodontics at Tsurumi University dental school in Yokohama, Japan. His main interest is in the field of TSAD with numerous publications and lectures on this topic. He is the first author of the textbook, ‘Orthodontic Miniscrew Implants,’ published by Mosby/Elsevier. He is also frequent contributor in the Journal of Clinical Orthodontics.