A. Elkholly, M. Negm, R. Hassan, and N. Omar, “Healing Assessment of Osseous Defects after Surgical Removal of Periapical Lesions in the Presence of Hydroxyapatite, Nanohydroxyapatite, and a Combination of Nanohydroxyapatite and Platelet-rich Fibrin: A Clinical Study”, Open Access Maced J Med Sci, vol. 10, no. D, pp. 406–414, Sep. 2022.