Busch Cool-Diamant Cylinder Round Bur | Busch No. CD 34G 012 – Coarse Grit – FG | Pack of 6
The cool diamant coarse diamond dental bur from Busch & Co. GmbH is engineered for efficient crown preparation, delivering controlled material removal with a coarse grit that suits demanding clinical workflows. Designed in a cylinder round (CD 34G) geometry, this instrument carries a green ring designation — the universally recognised colour code for coarse grit — ensuring straightforward identification chairside.
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
- Shape: Cylinder Round (CD 34G)
- Grit: Coarse (Green Ring)
- Shank: Friction Grip (FG)
- Diameter: 012
- Pack Quantity: 6 burs per pack
- Primary Application: Crown Preparation
Applications
The cool diamant coarse diamond dental bur is well-suited for the following clinical procedures:
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Crown Preparation — Reduction of tooth structure to create the margins and clearance required for a crown. |
German Engineering Quality
Every cool diamant coarse diamond dental bur in this range is Made in Germany 
, reflecting Busch & Co. GmbH's long-standing commitment to precision manufacturing. German-made diamond instruments are recognised for consistent diamond particle distribution, reliable bond integrity, and predictable cutting performance across multiple clinical uses.
Clinical Application
The coarse grit of this cool diamant coarse diamond dental bur makes it particularly suited to the initial reduction phases of crown preparation, where rapid and efficient tooth structure removal is required. The cylinder round form provides well-defined axial walls and a flat floor geometry, facilitating accurate preparation margins.
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 34G 012
| Busch figure | CD 34G |
| Shape | Cylinder Round |
| 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) |
The cylinder round head cuts parallel axial walls and leaves a rounded-shoulder margin in a single pass, which is why this figure is a crown-preparation workhorse, and its COOL DIAMANT cooling grooves reduce heat build-up in use. At 1.2 mm the head is narrow, which favours anterior preparations and confined spaces. Coarse grit removes material quickly, so this is the bur for the bulk-reduction stage before switching to medium or fine grit.
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 does the green ring indicate?
The green ring is the standard colour code denoting coarse grit on diamond dental burs, allowing quick identification during clinical procedures.
What shank type is this bur?
This bur is supplied with a Friction Grip (FG) shank, compatible with standard high-speed handpieces.
How many burs are included?
Each pack contains 6 individual burs, offering cost-effective stocking for busy dental practices.
Is this bur suitable for crown preparation?
Yes — the cool diamant coarse diamond dental bur is specifically indicated for crown preparation applications.
