1. Department of Oral Medicine, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2. Member of Iranian Association of Periodontology, Private Practice, Tehran, Iran
3. Student Research Committee, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
4. Department of Oral and Maxillofacial Surgery, School of Dentistry, Islamic Azad University, Isfahan (Khorasgan) Branch, Isfahan, Iran