1. Dental Implants Research Center and Dental Research Center, Department of Oral Medicine, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
2. Department of Oral and Maxillofacial Medicine, School of Dentistry, Alborz University of Medical Sciences, Karaj, Iran
3. Department of Oral Medicine, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
4. Department of Pathology, School of Medicine, Hamedan University of Medical Sciences, Hamedan, Iran