Document Type : original article
Authors
1 Associate Professor, Dept of Oral & Maxillofacial Radiology, School of Dentistry and Dental Research Center of Mashhad University of Medical Sciences, Mashhad, Iran
2 Associate Professor, Dept of Orthodontics, School of Dentistry and Dental Research Center of Mashhad University of Medical Sciences, Mashhad, Iran
3 Oral & Maxillofacial Radiologist
4 Assistant Professor, Dept of Community Medicine and Public Health, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran