1. General Dentist, Private Office, Jahrom, Iran
2. Department of Restorative Dentistry, Dental Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
3. Department of Epidemiology, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
4. Orthodontist, private office, Hamadan, Iran
5. Periodontist, private office, Hamadan, Iran
6. Oral and Maxillofacial Surgeon, private office, Hamadan, Iran