The use of all-ceramic restorations will increase the
depth of translucency and light transmission across the
entire restoration.53 However, some of the zirconiabased
systems (Cercon, DCS-Precident) utilize a whitecolored
core, which may limit their indications from
an esthetic standpoint. Another system (Lava) uses a
Y-TZP core that is relatively translucent and, at the
same time, may mask underlying discolored abutments.
Moreover, it can be colored in 1 of 7 shades, corresponding
to the Vita-Lumin shade guide.