Super Coarse Diamonds | Black Ring

Which Super Coarse Diamond Do You Need?

FG black-ring figures are the clinical diamonds; the HP figures and DiaTwisters are laboratory instruments. The size is the head diameter in tenths of a millimeter. Every active product in the collection is linked once below.

Clinical Use

Black-ring diamonds do the first, bulk-removal stage — initial crown reduction, cutting down old restorations, opening fissures — and are followed by coarse, medium, and fine grits for the finish; the round, pear, cylinder, taper, torpedo, flame, football, and wheel shapes cover the same geometries as the finer rings. The HP diamonds and DiaTwisters are the laboratory counterparts for acrylic, resin, and model material on a straight handpiece.

Care and Reconditioning

Diamond instruments are cleaned, disinfected, and sterilized between uses in a bur block that protects the coating; a super coarse diamond is discarded when the grit no longer cuts freely. Our Dental Bur Reprocessing & Sterilization Guide covers the full workflow for Busch rotary instruments.

Compare With

Step down the grit ladder with Coarse Diamonds (green ring), Medium Diamonds (blue ring), and Fine Diamonds (red ring), or step up to Mega Coarse DiaTwister Diamonds; see also the Dental Diamond Bur Collection. For ring colors and figure numbers, see the Color Coding & ISO Guide, the Bur Comparison Chart, and the Dental Bur Glossary.

Reference resources: Bur Comparison Chart · Speed Chart · Color Coding & ISO Guide · Glossary

FAQ

Further reading: Busch Bur Ring Colors Explained: How to Read Grit, Blade Count, and the Gold COO