Ragab , Mai Hamdy, Asmaa Yousry Abdalla, and Marwa El-Sayed Sharaan. 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):7-12. https://doi.org/10.22037/iej.v17i1.34696.