Amir Najafi
1 
, Fatemeh Shirvani
1* , Nazli Rabienejad
2,3 , Samad Moslehi
4 , Negin Najafi
5 1 Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Implants Research Center, Avicenna Institute of Clinical Sciences, Avicenna Health Research Institute, Hamadan University of Medical Sciences, Hamadan, Iran
2 Department of Periodontology, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
3 Department of Periodontology, School of Dentistry, Dental Implants Research Center, Avicenna Institute of Clinical Sciences, Avicenna Health Research Institute, Hamadan University of Medical Sciences, Hamadan, Iran
4 Department of Biostatistics, School of Public Health, Modeling of Noncommunicable Diseases Research Center, Institute of Health Sciences and Technology, Hamadan University of Medical Sciences, Hamadan, Iran
5 School of Dentistry, Department of Medical Biotechnologies, University of Siena, Siena, Italy