US No. 558L Busch Carbide Straight Fissure (Cylinder) Long Bur | Busch No. 31L 012 – Crosscut – FG | Pack of 6
The carbide cylinder fissure dental bur 31L 012 (US No. 558L) from Busch & Co. GmbH is a precision-engineered rotary instrument designed for demanding restorative and operative dentistry procedures. Manufactured in Germany to exacting standards, this bur delivers consistent, reliable performance in clinical environments.
Product Classification
This carbide cylinder fissure dental bur is classified under the ISO standard 500 314 110 007 012, identifying it as a Cylinder Flat, Excavating and Fissure Bur in the carbide category. The FG (Friction Grip) shank ensures secure, vibration-free seating in high-speed handpieces.
Key Features
- Material: Tungsten carbide for superior hardness and edge retention
- Shape: Cylinder flat — optimized for precise fissure preparation and excavation
- Shank type: FG (Friction Grip) for high-speed handpiece compatibility
- ISO Classification: 500 314 110 007 012
- Pack size: 6 burs per pack
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.
Applications
The carbide cylinder fissure dental bur is well-suited for the following clinical procedures:
 |
Cavity/Fissure Preparation — Opening, extending and shaping cavities and fissures with controlled removal of enamel and dentin. |
Why Choose This Bur?
Busch & Co. GmbH has a long-standing reputation for manufacturing high-quality rotary dental instruments. Every carbide cylinder fissure dental bur in this range undergoes rigorous quality control to ensure dimensional accuracy, cutting efficiency, and longevity. The large carbide designation (LG) reflects an extended cutting surface suited for broader cavity preparations.
FAQ
What handpiece is this bur compatible with? This bur features an FG (Friction Grip) shank, making it compatible with standard high-speed dental handpieces.
How many burs are included? Each pack contains 6 individual burs.
What is the ISO classification of this bur? The ISO classification is 500 314 110 007 012, corresponding to a carbide cylinder flat fissure bur.
Compare With
| Manufacturer | Reference |
|---|---|
| Komet (Gebr. Brasseler) | H31L.314.012 |
| Brasseler USA | H31L.31.012 |
| Meisinger | HM31L-012-FG |
| SS White | 310151 |
| NTI (Kerr Rotary) | FG558L-KC0 |
Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.
US No. 558L Busch Carbide Straight Fissure (Cylinder) Long Bur | Bu...
