Busch Cool-Diamant Cylinder Rounded Edge Bur | Busch No. CD 21G 012 – Coarse Grit – FG | Pack of 6
The cool diamant coarse diamond dental bur from Busch & Co. GmbH is a precision-engineered rotary instrument designed for demanding dental procedures requiring controlled, efficient material removal. This cylinder rounded edge diamond bur features a coarse grit and is identified by its green ring color coding, making chairside identification fast and reliable.
Key Features
- Shape: Cylinder with Rounded Edge
- Series: Cool-Diamant
- Grit: Coarse (Green Ring)
- Shank: FG (Friction Grip)
- Pack Quantity: 6 burs per pack
- Origin: Made in Germany
Instrument Dimensions
| Head Ø | 1.2 mm (ISO size 012) |
|---|---|
| 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.
Clinical Applications
This cool diamant coarse diamond dental bur is well suited for a range of restorative and prosthodontic workflows. Its geometry and coarse diamond coating support efficient cutting in the following procedures:
- Crown Preparation — enables rapid, controlled reduction of tooth structure for full or partial crown restorations
- Cavity/Fissure Preparation — ideal for initial cavity access and fissure shaping prior to restorative placement
German Engineering Quality
Manufactured in Germany, the cool diamant coarse diamond dental bur reflects the exacting standards associated with Busch & Co. GmbH's production processes. German-made dental instruments are recognized for their dimensional consistency, diamond bonding quality, and long service life, supporting reproducible clinical outcomes across multiple uses.
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 on this bur? The green ring is the internationally recognized color code for coarse grit diamond burs, helping clinicians quickly select the correct instrument at chairside.
What shank type is this bur? This bur uses an FG (Friction Grip) shank, compatible with standard high-speed handpieces.
How many burs are included? Each pack contains 6 individual cool diamant coarse diamond dental burs, providing excellent value for busy clinical environments.
Specifications: Busch No. CD 21G 012
| Busch figure | CD 21G |
| Shape | Cylinder Rounded Edge |
| ISO size / head diameter | 012 (1.2 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. Being coarse, it is a bulk-reduction instrument rather than a finishing one. The 1.2 mm head is a slim size, suited to anterior teeth, narrow interproximal spaces and detail work.
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 012...
