For large anterior cases. For use with large and extensive anterior cases, Tokuyama offers Omnichroma blocker, a supplementary material to be used in conjunction with Omnichroma for the direct restoration of extensive Class III and IV cavities. Omnichroma blocker can be used as a lingual layer to prevent shade-matching interference in these cases. Omnichroma Blocker can also be used to mask slight staining, or to reconstruct a highly opaque tooth. **For further product information, please contact Chat Support**