NeoBurr® FG 57 Plain Straight Fissure Operative Carbide Bur by Microcopy (USA). Engineered from a single piece of solid tungsten carbide with a standard friction grip shank and a 3.8 mm straight fissure cutting head. Specifically designed for precise cavity preparation, establishing parallel axial walls, creating flat pulpal floors, and gaining clean initial occlusal access in Class I and Class II restorations.

Product Specifications:

• Model / Bur Number: #57 (NB57)
• Shape: Plain Straight Fissure (Shape 57)
• Head Diameter: 1.0 mm
• Head Length (LWH): 3.8 mm
• Overall Length: Standard FG (~19.0 mm)
• Shank Type: FG (Friction Grip, High Speed)
• Construction: Single-Piece Solid Tungsten Carbide (Blended Neck, no brazed weld)
• Sterilization: Pre-Sterilized (Sterile)
• Usage: Disposable / Single-Patient Use
• Packaging: Pack of 50 individually packaged burs
• Manufacturer: Microcopy Dental (USA)

Key Features:

• Parallel Wall & Flat Floor Definition: Cylindrical straight-fissure profile creates uniform parallel cavity walls and flat pulpal floors with clean internal line angles, ideal for amalgam and direct composite preparations.
• Smooth Plain Flute Cutting: Non-crosscut (plain) blade geometry delivers an ultra-smooth surface finish on axial and pulpal margins, minimizing the need for secondary hand finishing.
• Generous 3.8 mm Working Flutes: Extended cutting length provides broad vertical reach for seamless full-depth cavity preparation and axial wall shaping.
• Single-Piece Solid Carbide Construction: Integrated blended-neck architecture eliminates brazed joint failure points, maximizing fracture resistance and reducing vibration under high-speed cutting.
• Efficient Debris Evacuation: Optimized straight flutes provide clear paths for debris clearance, preventing clogging and minimizing thermal stress on pulpal tissue.
• Sterile Single-Patient Safety: Individually blister-packaged and pre-sterilized to eliminate cross-contamination and ensure razor-sharp cutting performance straight from the package.
• True Concentric Rotation: Precision Swiss-machined shank ensures true concentricity, protecting turbine chucks and handpiece bearings from premature wear.