Supervisor : Ola Fahmy, Hussein Abdelfattah Gomaa.Gouda, Salma Raafat,2022-11-022022-11-022021EG-CaMIUThs395https://iorep.miuegypt.edu.eg/handle/20.500.13071/112DISSERTATION NOTE-Name of granting institution Misr International University, Faculty of Oral and Dental MedicineDISSERTATION NOTE-Degree type M.Sc.Includes Arabic Summary.Includes bibliographic references.68 pages : illustrations, photo 29 cm +textapplication/pdfengDentistry, Operativetext