1. Oral and Dental Disease Research Center, Department of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
2. Biomaterial Research Center, Department of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
3. Student of Research Committee, Dental School, Shiraz University of Medical Sciences, Shiraz, Iran