1. Dental Sciences Research Center Department of Maxillofacial Radiology School of Dentistry Guilan University of Medical Sciences Rasht Iran
2. School of Dentistry Guilan University of Medical Sciences Rasht Iran
3. Department of Orthodontics School of Dentistry Guilan University of Medical Sciences Rasht Iran
4. Biostatistician, Vice‐chancellor of Research and Technology Guilan University of Medical Sciences Rasht Iran