1. Department of Restorative Dentistry Faculty of Dentistry King Abdulaziz University Jeddah Saudi Arabia
2. Division of Prosthodontics, Dental Department King Fahad Armed Forces Hospital, Ministry of Defense Jeddah Saudi Arabia
3. Department of Restorative and Prosthetic Dental Sciences College of Dentistry King Saud Bin Abdulaziz University for Health Sciences Riyadh Saudi Arabia
4. King Abdullah International Medical Research Center Ministry of National Guard Health Affairs Riyadh Saudi Arabia