1. College of Dentistry; University of Dammam; Saudi Arabia
2. Hugh Love Center for Research & Education in Technology; Loma Linda University School of Dentistry; Loma Linda CA
3. Advanced Specialty Education Program in Prosthodontics; Loma Linda University School of Dentistry; Loma Linda CA
4. King Fahad Medical City; Riyadh Saudi Arabia
5. Department of Prosthetic Dental Sciences; King Saud University; Riyadh Saudi Arabia