1. Department of Oral and Maxillofacial Surgery, School of Dentistry, Kashan University of Medical Sciences, Kashan, Iran.
2. Department of Prosthodontics, School of Dentistry, Kashan University of Medical Sciences, Kashan, Iran.
3. Department of Prosthodontics, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran.
4. Department of Prosthodontics and Dental Materials, School of Dentistry, Islamic Azad University of Medical Sciences, Tehran, Iran.
5. School of Dentistry-International Campus, Tehran University of Medical Sciences, Tehran, Iran.
6. Department of Oral and Maxillofacial Surgery, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.