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- Clinical Instructor of Orthodontics, Alexandria University, 1966-1972.
- Assistant Lecturer of Orthodontics, Alexandria University, 1972-1974.
- Lecturer of Orthodontics, Alexandria University, 1974-1979.
- Visiting Assistant Professor, Orthodontic Dept., School of Dentistry, University
of Michigan. Ann Arbor, Michigan, U.S.A., 1975-1976.
- Associate Professor and Head of Orthodontic Dept., Alexandria University,
1979-1984.
- Professor and Head of Orthodontic Dept., Alexandria University, 1984-1987 &
1995-1998.
- ViceDean for Education and Student Affairs, Faculty of Dentistry, Alexandria
University, 1987-1990.
- Professor of Orthodontics, Alexandria University, 1990-1995 & 1998 -Date.
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