Helal, E., M. El-Zawahry, A. Gouda, A. H. Elkhadem, and S. I. Ibrahim. “Bone Height Changes of the Mandibular Edentulous Ridge in Screw Retained Versus Telescopic Restorations for Completely Edentulous Patients”. Open Access Macedonian Journal of Medical Sciences, vol. 5, no. 1, Jan. 2017, pp. 72-78, doi:10.3889/oamjms.2017.004.