Albadah As, Khan Am. “An in Vitro Study Comparing Nano-Composite Microleakage With and Without Hydroxyapatite-Reinforced Glass Ionomer Cement and Cention N As a Base Material in Class I Cavity”. Pakistan Journal of Medical & Health Sciences, vol. 16, no. 05, June 2022, p. 400, doi:10.53350/pjmhs22165400.