Kenji Ojima1, Chisato Dan2, Yuriko Kumagai2, Hitoshi Watanabe2, Ranindra Nanda3. 1. Private practice of orthodontics in Tokyo, Japan. kenjiojima@jaligner.com. 2. Private practice of orthodontics in Tokyo, Japan. 3. Division of Orthodontics, Department of Craniofacial Sciences, University of Connecticut School of Dental Medicine, Farmington, CT.