Affiliation: | 1. Resident, Department of Esthetic and Prosthodontics, School of Dentistry, Saint Joseph University, Beirut, Lebanon;2. Senior Clinical Instructor, Department of Periodontology, School of Dentistry, Saint Joseph University, Beirut, Lebanon;3. Senior Clinical Instructor, Department of Esthetic and Prosthodontics, School of Dentistry, Saint Joseph University, Beirut, Lebanon; and Private practice, Hadi Akel Cosmetic Dentistry, Antelias, Lebanon |