Ragab , M.H. , Abdalla , A.Y. and Sharaan, M.E.-S. 2022. Location of the Maxillary Posterior Tooth Apices to the Sinus Floor in an Egyptian Subpopulation Using Cone-beam Computed Tomography. Iranian Endodontic Journal. 17, 1 (Jan. 2022), 7–12. DOI:https://doi.org/10.22037/iej.v17i1.34696.