-Professor of Periodontology- Al-Azhar Univ. 2000
-Vice Dean Al Azhar University. Girls Faculty of Dental Medicine 2004-2008
– Vice President and Cofounder of the Egyptian National Authority of Qualty Assurance in Education(NAQAE) 2008-2015
-Vice Dean: 6 October Faculty of Dental medicine 2016-2019
– Professor of Periodontology at Must. 2022- present
– Author of Several Publications in National and International Journals(550 citations)
Hamdy Nassar - Egypt 
Prof.