Affiliation: | 1. Department of Orthodontics and School of Dentistry, Chonbuk National University, Jeonju, South Korea Department of Orthodontics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China;2. Department of Oral Anatomy and School of Dentistry, Chonbuk National University, Jeonju, South Korea;3. Department of Orthodontics and School of Dentistry, Chonbuk National University, Jeonju, South Korea |