Supervisor : Atef Shaker, Tarek Salah. Includes Arabic Summary.Chawky, Marina Achraf,2026-02-222026-02-222025.EG-CaMIUDNT Ths927 M.Sc. 2025https://iorep.miuegypt.edu.eg/handle/20.500.13071/352DISSERTATION NOTE-Degree type M.Sc.DISSERTATION NOTE-Name of granting institution Misr International University, Faculty of Oral and Dental MedicineIncludes bibliographic references.106 pages : illustrations, photo ; 29 cmFixed prosthodonticsThe effect of different implant abutment connections on microgaps formation and screw loosening after fatigue loading : (An in-vitro study) /تأثير وصلات دعامة الزرع المختلفة على تكوين فجوات دقيقة وفك البراغي بعد تحميل الإجهاد : (دراسة مخبرية خارج الجسم الحي)