• Associate Researcher Professor in the Restorative and Dental Materials Department, National Research Centre (NRC) • Associate Professor of Nanotechnology in Dentistry, Faculty of Dentistry, Ain Shams University • Associate Professor of Dental Biomaterials, Faculty of Dentistry, Misr International University (MIU), Egypt • Certified International Trainer, Ain Shams University • Reviewer in many international journals • In 2024 - 2026, he was recognized among the top 2% of most influential scientists across the world based on their research publications, according to the prestigious Stanford ranking based on Scopus database provided by Elsevier, as listed by Stanford University.