1. Department of Prosthodontics, Faculty of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
2. Biomaterial Research Center, Department of Prosthodontics, Faculty of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
3. Department of Prosthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
4. Department of Oral and Maxillofacial Pathology, Faculty of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.