Busch Cool-Diamant Taper (Cone) Rounded Edge Bur | Busch No. CD 39 018 – FG | Pack of 6
The diamond dental bur crown preparation instrument CD 39 018 FG from Busch & Co. GmbH is a precision-engineered rotary tool built to meet the exacting demands of modern dental practice. Combining a taper (cone) rounded edge geometry with medium grit diamond abrasive, this bur delivers controlled, efficient cutting with minimal heat generation — protecting pulpal health while improving patient comfort.
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
- Series: Cool Diamant
- Shape: Taper (Cone) Rounded Edge
- Grit: Medium
- Shank: FG (Friction Grip)
- Pack Quantity: 6 burs per pack
Key Features
Engineered in Germany, the Cool Diamant series reflects Busch & Co.'s long-standing commitment to manufacturing quality and precision. The series is specifically formulated to reduce frictional heat during preparation procedures, a critical factor in preserving pulpal vitality and ensuring a comfortable clinical experience for the patient.
As a diamond dental bur crown preparation instrument, the CD 39 018 FG features a taper (cone) rounded edge profile that enables clinicians to achieve smooth, well-defined preparation margins with consistent, repeatable results. The medium grit specification strikes the ideal balance between efficient material removal and high-quality surface finish — making it suitable for a broad range of crown preparation workflows.
Clinical Application
This instrument is ideally suited for crown preparation procedures where marginal accuracy and controlled reduction are paramount. The FG (Friction Grip) shank ensures compatibility with standard high-speed handpieces commonly used in restorative and prosthetic dentistry.
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).
Podiatry Use
At 1.8 mm, the CD 39 018 is the largest of the three CD 39 taper (cone) rounded edge sizes Busch lists for podiatry. Its medium-grit Cool-Diamant surface is used for callus and nail smoothing on FG turbines with cooling water, and each pack holds 6 burs. See podiatry burs for nail-edge and fine work and diamond podiatry burs.
Instrument Dimensions
| Head Ø | 1.8 mm (ISO size 018) |
|---|---|
| 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 39 018
| Busch figure | CD 39 |
| Shape | Taper (Cone) Rounded Edge |
| ISO size / head diameter | 018 (1.8 mm max head Ø) |
| Grit | Medium (blue ring) |
| Shank | FG |
| Pack size | Pack of 6 |
| Line | COOL DIAMANT (gold) |
The tapered head with rounded edge cuts the slightly convergent axial walls a crown needs and leaves a chamfer at the margin; the gold COOL DIAMANT head carries cooling grooves that keep heat down while cutting. Medium grit is the standard working grit for the main preparation after gross reduction. The 1.8 mm head is a larger size, best for posterior bulk reduction where there is room to work.
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 shank type does the CD 39 018 FG use?
This bur uses an FG (Friction Grip) shank, compatible with standard high-speed dental handpieces.
How many burs are included per pack?
Each pack contains 6 burs.
What grit level is this diamond dental bur crown preparation instrument?
It is a medium grit instrument, balancing cutting efficiency with surface finish quality.
Where is the Cool Diamant series manufactured?
The Cool Diamant series is engineered and manufactured in Germany by Busch & Co. GmbH.
Is the CD 39 018 suitable for podiatry?
Yes. Busch includes the CD 39 018 in its podiatry turbine range for smoothing callus and nails. It is a friction grip (FG) bur for podiatry turbine units.
