Busch Cool-Diamant Cylinder Rounded Edge Bur | Busch No. CD 25G 012 – Coarse Grit – FG | Pack of 6
The coarse diamond dental bur cylinder rounded edge from Busch & Co. GmbH is engineered for demanding crown preparation procedures where precision and material removal efficiency are essential. Designed under the Cool-Diamant series, this bur delivers consistent cutting performance across a range of clinical applications.
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.
Product Overview
The CD 25G 012 FG Cool-Diamant is a cylinder rounded edge diamond bur with a coarse grit designation, identified by its Green Ring color coding. Its geometry is optimized for controlled axial and marginal reduction, making it a reliable choice for practitioners who require accuracy at every stage of preparation.
- Form: 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
Crown Preparation
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).
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.
Specifications: Busch No. CD 25G 012
| Busch figure | CD 25G |
| 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, and its COOL DIAMANT cooling grooves reduce heat build-up in use. The 1.2 mm head is a slim size, suited to anterior teeth, narrow interproximal spaces and detail work. The coarse diamond coating is meant for fast, gross reduction; follow with a medium or fine instrument to refine the preparation.
Read the guides: Crown Preparation Burs · Bur Color Coding & ISO Guide · Bur Speed Chart · All COOL DIAMANT burs
Busch Warranty & 60-Day Returns
This Busch instrument is guaranteed against manufacturing and workmanship defects — we'll repair or replace it under normal professional use. Unused, unopened product in its original packaging can also be returned or exchanged within 60 days of delivery. Full terms are on our Warranty page and Returns page.
FAQ
What handpieces are compatible with this instrument?
It has an FG (friction grip) shank, which fits standard high-speed turbine handpieces.
How many are included per pack?
Each pack contains 6 burs.
Where is this instrument made?
It is manufactured by Busch & Co. in Engelskirchen, Germany, an ISO 13485-certified specialist in rotary precision instruments since 1905.
