Document Type : Original Article
Authors
1 Lecturer, Department of Restorative Dental Sciences, College of Dentistry, King Saud University.
2 Assistant professor, Department of Restorative Dental Sciences, College of Dentistry, King Saud University
3 Professor of Periodontology, Riyadh Colleges of Dentistry and Pharmacy. and Faculty of Dentistry, Tanta University
Abstract