Institution: | 1. Lecturer of orthodontics, Department of Orthodontics, Faculty of Dentistry, Cairo University, Egypt;2. Associate Professor and Director of DMD Program, Department of Periodontics, School of Dental Medicine, Case Western Reserve University, Cleveland, OH;3. Professor and Director of Orthodontic Residency, Department of Orthodontics, School of Dental Medicine, Case Western Reserve University, Cleveland, OH;4. Professor of orthodontics, Department of Orthodontics, Faculty of Dentistry, Cairo University, Egypt |