100% Zirconia Burs by Doceram Medical Ceramics are now available in North America. Sold exclusively by The Ratava Group, these full-zirconia burs boast the highest accuracy, highest strength (1350 MPa), lowest vibration, and are the quietest burs on the market. The unique, specific engineering of full-zirconia burs allows for extended tool life and the most precise, time and cost-effective finishing process.