US No. 558 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No. 31 012 – Crosscut – FG | Pack of 6
The carbide cylinder fissure dental bur 31 012 (US No. 558) from Busch & Co. GmbH is a precision-engineered instrument designed for reliable cavity preparation and fissure work in clinical dentistry. Manufactured in Germany to exacting standards, this bur delivers consistent cutting performance across demanding restorative procedures.
Product Specifications
- Type: Carbide, Cylinder Flat, Excavating and Fissure Bur
- ISO Classification: 500 314 107 007 012
- US No.: 558
- Shank: FG (Friction Grip)
- Pack Quantity: 6 burs per pack
Design and Performance
This carbide cylinder fissure dental bur features a flat-end cylinder geometry that enables precise, controlled cutting with minimal lateral deviation. The carbide construction ensures long-lasting sharpness and thermal stability, making it well-suited for high-speed handpiece use. The flat cutting tip is ideal for establishing flat pulpal floors and clean vertical walls during cavity preparation.
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. |
German Engineering Quality
Each carbide cylinder fissure dental bur in this pack is manufactured in Germany by Busch & Co. GmbH, a trusted name in dental rotary instruments. German-made quality ensures dimensional accuracy, consistent flute geometry, and reliable clinical outcomes batch after batch.
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.
Compare With
| Manufacturer | Reference |
|---|---|
| Komet (Gebr. Brasseler) | H31.314.012 |
| Brasseler USA | H31.31.012 |
| Meisinger | HM31-012-FG |
| SS White | 310130 |
| NTI (Kerr Rotary) | FG558-KC0 |
| Alpen (Coltène) | R100558 |
| Karl Schumacher | BCO0558F |
Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.
US No. 558 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No...
