Supervisor : Nihal Ezzat Sabet, Ahmed Adel Khalaf. Includes Arabic Summary.El-Maamoun, Yasmine Mohamed Hany,2024-08-042024-08-042024.EG-CaMIUDNT Ths721 M.Sc. 2024https://iorep.miuegypt.edu.eg/handle/20.500.13071/263DISSERTATION NOTE-Degree type M.Sc.DISSERTATION NOTE-Name of granting institution Misr International University, Faculty of Oral and Dental MedicineIncludes bibliographic references.illustrations, photo ; 29 cm150 pagesEndodonticsThe efficacy of a supplementary file on bacterial reduction in retreated oval-shaped canals : An in-vitro study /فاعلية مبرد تكميلي على الحد من البكتريا أثناء إعادة علاج اللبية في القنوات ذات الشكل البيضاوي : دراسة معملية