F. . Vafaee, A. . Hooshyarfard, A. Shahbazi, F. . Fotovat, M. . Khoshhal, and S. . Heydari, “Fracture Resistance of Aged Full-Coverage All-Ceramic Zirconia and Metal-Ceramic Restorations of Implant-Supported Fixed Partial Dentures”, Open Access Maced J Med Sci, vol. 8, no. D, pp. 198–202, Oct. 2020.