Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; mashaheen@ksu.edu.sa (M.Y.S.)
Dr. Marwa Shaheen
Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; mashaheen@ksu.edu.sa (M.Y.S.)