US No. 1558 Busch Carbide Straight Fissure (Cylinder) Round Bur | Busch No. 31R 012 – Crosscut – FG | Pack of 6

The carbide cylinder round dental bur from Busch & Co. GmbH is a precision-engineered rotary instrument designed for demanding restorative and operative dentistry procedures. Manufactured in Germany to exacting tolerances, this bur delivers consistent, reliable performance across a range of clinical applications.

Product Classification

This instrument is classified under ISO standard 500 314 137 007 012, identifying it as a Carbide, Cylinder Round, Excavating and Fissure Bur (US No. 1558). It is supplied in a convenient pack of 6, ensuring an efficient supply for busy dental practices.

Key Features

• Carbide construction for exceptional hardness and cutting longevity
• Cylinder round geometry for controlled, predictable tissue removal
• Friction grip (FG) shank for compatibility with standard high-speed handpieces
• German-engineered for dimensional accuracy and consistent clinical results
• ISO classification: 500 314 137 007 012

Instrument Dimensions

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 round dental bur is optimized for cavity and fissure preparation, making it an essential tool for operative dentistry. Its precise cutting geometry allows clinicians to efficiently excavate carious tissue and prepare fissures with minimal unnecessary removal of healthy tooth structure.

The carbide cylinder round 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.

Selecting the correct carbide cylinder round dental bur for each procedure contributes directly to restorative quality and patient outcomes. The 31R 012 profile is well-suited for Class I and Class II preparations where defined walls and a flat floor are required.

FAQ

What shank type does this bur use? This bur features a friction grip (FG) shank, designed for use with standard high-speed dental handpieces.

How many burs are included in a pack? Each pack contains 6 individual burs, providing a practical supply for clinical use.

What is the ISO classification of this bur? The ISO classification is 500 314 137 007 012, confirming its designation as a carbide cylinder round dental bur for excavating and fissure preparation.

Compare With

Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.