1. Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31441, P. O. Box 1982, Saudi Arabia
2. Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31441, P. O. Box 1982, Saudi Arabia
3. Clinical Affairs Department, College of Dentistry and Dental Hospital Imam Abdulrahman Bin Faisal University, Dammam 31441, P. O. Box 1982, Saudi Arabia