Figure 4.

SEM micrographs of (A) 4Y-PSZ and (B) 5Y-PSZ depicting a dense microstructure with a predominance of cubic grains that are significantly larger than those of the 3Y-TZP versions used as framework and monolithic, as presented in Figure 2 and Figure 3, respectively. The high content of the non-birefringent cubic phase allows for a higher light transmittance and, therefore, higher translucency.