Very interesting material for opacity and fluorescence of dentin bodies and for translucency of enamel bodies that allows to put in evidence the typical contrast between these two elements in the natural tooth. Enamel bodies also allow to obtain a natural polishing in temporary crowns, similar to the definitive ceramic elements. It can be used both in laboratory with the help of silicone stent or of vacuum forming matrix with the direct technique using a silicone impression or a preformed crown.