1. Operative dentistry department, school of dentistry, Tehran University of Medical Sciences
2. Dentist
3. Dental Student's Scientific Research Center, School of Dentistry, Tehran University of Medical Sciences
4. Division of Biopharmaceutics and Pharmacokinetics, Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences
5. Laser Research Center of Dentistry, Dental Research Institute, Tehran University of Medical Sciences