Tehran University of Medical Sciences Frontiers in Dentistry 2676-296X 6 2 2009 06 15 30 35 A. Tehranchi Associate Professor, Department of Orthodontics, Dental School, Shahid Beheshti University of Medica M. Nouri Assistant Professor, Department of Orthodontics, Dental School, Shahid Beheshti University of Medica R. Massudi Assistant Professor, Laser Research Institute, Dental School, Shahid Beheshti University of Medical M. Katchooi Dentist, Private Practice 2015 10 03   https://fid.tums.ac.ir/index.php/fid/article/view/183 https://fid.tums.ac.ir/index.php/fid/article/download/183/183