APVolution Z  Transpa Dentin Ingots are designed for anterior and posterior restorations for specific shades with minimal staining. These are available in 16 main VITA color categories: A1, A2, A3, A3. 5, A4, B1, B2, B3, B4, C1, C2, C3, C4, D2, D3, D4 and three bleach shades. With the dentin ingots, the technician is able to do a cut back,  internal staining and add enamel and transparent layers. 14 Enamel