Karaman, Tahir, and Mustafa Hayati Atala. “Investigating the Fracture Strength of Cad Cam Pmma and Bis-Acrylic Resin in Temporary Crown Materials”. International Journal of Basic and Clinical Studies, vol. 8, no. 2, Sept. 2019, pp. 49-55, https://www.ijbcs.com/ijbcs/article/view/ijbcs08207.