1. Department of Dental Health, College of Applied Medical Sciences , King Saud University , Riyadh , Saudi Arabia
2. Department of Preventive Dentistry, Division of Pediatric Dentistry, College of Dental Sciences , Mustaqbal University , Buraydah , Al-Qassim Province , Saudi Arabia
3. Dental Public Health, College of Dentistry , King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, National Guard Health Affairs , Riyadh , Saudi Arabia
4. Agmal Ebtsama Dental and Derma Clinics Center , Buraydah , Al-Qassim Province , Saudi Arabia