Supervisor : Sameh Mahmoud Nabih, Ahmed Fawzy Aboelezz, Mennatallah Naguib Salem. Includes Arabic Summary. Cataloging from PDF file.El-Emairy, Noha Kamal Ibrahim Mohamed,2026-04-262026-04-262026.EG-CaMIUDNT Ths962 M.Sc. 2026https://iorep.miuegypt.edu.eg/handle/20.500.13071/364DISSERTATION NOTE-Degree type M.Sc.DISSERTATION NOTE-Name of granting institution Misr International University, Faculty of Oral and Dental MedicineIncludes bibliographic references .98 pages : illustrations, photo ; 29 cmDentistry, OperativeEffect of nigella sativa oil in different concentrations on hardness and color of white spot lesion : An in-vitro study /تأثير زيت حبة البركة في تركيزات مختلفة على صلابة ولون آفة البقع البيضاء : دراسة في المختبر