Mourad, L. M. E.-K. M., Elzainy, M. A. and Hussein , S. I. (2022) “Comparing the Effect of Activated Charcoal Whitening Agents against Regular Whitening Toothpastes on the Enamel Surface of Premolar Teeth: In vitro Study”, Open Access Macedonian Journal of Medical Sciences, 10(D), pp. 493–498. doi: 10.3889/oamjms.2022.11057.