1. Department of Orthodontics, Semnan University of Medical Sciences, Semnan, Iran.
2. Department of Cosmetic and Restorative Dentistry, Semnan University of Medical Sciences, Semnan, Iran.
3. Student Research Committee, Dental School, Semnan University of Medical Sciences, Semnan, Iran.
4. Social Determinants of Health Research Center, Semnan University of Medical Sciences, Semnan, Iran.