1. Associate Professor and Chairman of Substitutive Dental Sciences Department, College of Dentistry; University of Dammam; Kingdom of Saudi Arabia
2. Associate Professor, Restorative Dental Sciences Department, College of Dentistry, University of Dammam, Kingdom of Saudi Arabia, Assistant Professor, Dental Biomaterials Department, Faculty of Dentistry; Mansoura University; Egypt
3. Assistant Professor, Substitutive Dental Sciences Department; University of Dammam; Dammam City Kingdom of Saudi Arabia
4. Professor, Restorative Dental Sciences Department, College of Dentistry, University of Dammam, Kingdom of Saudi Arabia, Professor, Dental Biomaterials Department, Faculty of Dentistry; Cairo University; Egypt
5. Professor and Director, Hugh Love Center for Research and Education in Technnology; Loma Linda School of Dentistry; CA