1. Department of Endodontics, Dental Materials Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
2. Department of Endodontics, Dental Implants Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
3. Department of Oral and Maxillofacial Radiology, Dental School, Kerman University of Medical Sciences, Kerman, Iran
4. Department of Endodontics, Dental Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran