CEREC Blocs C PC are optimised for use in crowns. 3 layers, based on varying degrees of colour saturation (chroma), can be adapted according to colour gradients in restorations. Individuality and aesthetics are achieved through a more translucent top layer; a middle dentine layer with a normal degree of colour intensity; and a more strongly pigmented lower layer. Intermediate layers add to the characterisation. No need for glazing.