Busch Cool-Diamant Cylinder Rounded Edge Bur | Busch No. CD 21G 010 – Coarse Grit – FG | Pack of 6
The coarse diamond dental bur cylinder rounded edge from Busch & Co. GmbH is a precision-engineered rotary instrument designed for demanding restorative and prosthodontic procedures. Part of the Cool-Diamant series, this bur combines a cylinder rounded edge geometry with coarse grit diamond abrasive, identified by a green ring, to deliver efficient and controlled material removal.
Product Overview
The CD 21G 010 FG COOL-DIAMANT features a cylindrical shank with a rounded edge tip, making it well suited for applications that require both lateral and end-cutting action. As a coarse diamond dental bur cylinder rounded edge instrument, it is optimized for high-volume reduction while maintaining dimensional accuracy. The coarse grit designation makes it an ideal first-step bur in multi-step preparation sequences.
Clinical Applications
- Crown Preparation
- Cavity/Fissure Preparation
These two primary applications reflect the instrument's versatility across both full-coverage restorations and intracoronal cavity work. The rounded edge profile helps reduce stress concentrations at internal line angles during preparation.
Key Features
- Grit: Coarse (Green Ring)
- Shape: Cylinder Rounded Edge
- Shank: FG (Friction Grip)
- Series: Cool-Diamant
- Pack Quantity: 6 burs per pack
- Made in Germany
Instrument Dimensions
| Head Ø | 1.0 mm (ISO size 010) |
|---|---|
| Shank | FG (Friction Grip) — 1.60 mm Ø, 19 mm overall length (ISO 314) |
Per ISO 6360, the size number is the maximum head diameter in tenths of a millimeter. See our Busch Bur Size Chart for the full size conversion table, shank codes, and color ring guide.
Why Choose the Cool-Diamant Series?
The Cool-Diamant line from Busch is engineered in Germany to meet high standards of quality and consistency. Each coarse diamond dental bur cylinder rounded edge in this series is manufactured with rigorous tolerances, ensuring repeatable clinical performance across the full pack of six instruments.
Independent Research: Test Winner at Innsbruck
In an independent laboratory study at the Medical University of Innsbruck, Busch’s COOL DIAMANT design achieved the highest cutting performance in both test series — outperforming same-shape, same-grit diamonds from up to ten competing manufacturers. Under standardized conditions (200,000 rpm turbine, constant 152 g load, 10–40 minutes of continuous cutting on 99.5% Al₂O₃ ceramic), the COOL DIAMANT instrument removed significantly more material than burs from Diatech, Edenta, Horico and Komet (p < 0.05), and in the second series the standard Busch diamond placed second only to its cooling-groove sibling. The authors concluded that instruments with cooling grooves deliver higher grinding performance and need replacing less often.
Source: Sander A, Beier US, Kapferer I, Dumfahrt H. Untersuchung zur Schleifleistung diamantierter Schleifkörper. Stomatologie 2009;106:29–34 (Medizinische Universität Innsbruck).
Busch Warranty & 90-Day Returns
This Busch instrument is guaranteed against manufacturing and workmanship defects — we'll repair or replace it under normal professional use. Unused product in original packaging can also be returned or exchanged within 90 days of your invoice date. Full terms are on our Warranty page.
FAQ
What does the green ring indicate? The green ring is the industry-standard color code for coarse grit diamond burs.
Is this bur compatible with standard high-speed handpieces? Yes, the FG (Friction Grip) shank is compatible with standard high-speed friction grip handpieces.
How many burs are included? This listing includes a pack of 6 coarse diamond dental bur cylinder rounded edge instruments.
Specifications: Busch No. CD 21G 010
| Busch figure | CD 21G |
| Shape | Cylinder Rounded Edge |
| ISO size / head diameter | 010 (1.0 mm max head Ø) |
| Grit | Coarse (green ring) |
| Shank | FG |
| Pack size | Pack of 6 |
| Line | COOL DIAMANT (gold) |
With its flat end and rounded edge, this cylinder shapes axial walls and defines a shoulder or rounded-shoulder finish line; the gold COOL DIAMANT head carries cooling grooves that keep heat down while cutting. At 1.0 mm the head is narrow, which favours anterior preparations and confined spaces. Being coarse, it is a bulk-reduction instrument rather than a finishing one.
Read the guides: Crown Preparation Burs · Bur Color Coding & ISO Guide · Bur Speed Chart · All COOL DIAMANT burs
Independently tested. In the Medical University of Innsbruck cutting study, Busch’s cooling-groove diamond achieved the highest total cutting length of every bur tested over 40 minutes of continuous use. Read the Innsbruck Study.
Busch Cool-Diamant Cylinder Rounded Edge Bur | Busch No. CD 21G 010...
