Reinforcement of PMMA Denture Base Material with a Mixture of ZrO₂ Nanoparticles and Glass Fibers

Figure 8

(a–f) SEM of fracture surfaces of PMMA-nano-ZrO₂ + GF nanocomposites for some specimens with high magnification of 5000x. (a), (c), and (e) show some fibers protruding out of the fracture surfaces while (d) and (f) show the voids created by pulled-out fiber from the other side of the fracture surface.