University of Alexandria, Egypt
House Officer, Department of oral Surgery, Maxillo Facial, and Prosthodontics, School of Dentistry.
University of Alexandria, Egypt Resident, Oral Surgery Department, School of Dentistry
University of Alexandria, Egypt Assistant Lecturer, School of Dentistry
University of Alexandria, Egypt Lecturer, Department of Prosthodontics, School of Dentistry
University of Tanta, Egypt Assistant Professor, Department of Removable Prosthodontics
University of Alexandria, Egypt Assistant Professor ,Department of Removable Prosthodontics
State University of New York at Buffalo, U.S.A Visiting Professor, Department of Removable Prosthodontics, School of Dental Medicine.
Temple University, School of Dentistry Full Time Visiting Associate Professor, Department of Removable Prosthodontics
Temple University, School of Dentistry – Present Visiting Professor, Department of Removable Prosthodontics .