Colour and lightWhy the colour underneath decides how translucent the ceramic can be
A translucent ceramic shows some of whatever is behind it. On a tooth of normal colour that is an advantage: the natural tooth contributes depth, and E-max or feldspathic porcelain looks alive. On a tooth that is grey after root canal treatment, or on a metal post, the same translucency lets the dark colour show through.
- Normal-coloured tooth: a more translucent ceramic, often thinner.
- Moderately dark tooth: a more opaque glass-ceramic or more thickness.
- Very dark tooth or metal: layered zirconia usually masks it more predictably.
So the lab needs to see the prepared tooth, not only the neighbouring shade. Our guide to custom shade matching explains the process, and hand-layered ceramics shows how depth and edge translucency are built in.