#40 x 25mm Pac-File NiTi Rotary File with 0.04 Taper – 6/Pack (FNT250440)

• Featuring a 0.04 constant taper, an ISO size #40 tip diameter, and a standard 25mm working length, it serves as a master apical file to finalize root canal preparation across a broad range of patient anatomies

• Comparable to K3, Vortex, HyFlexNT, Endosequence

Uses

• Final Apical Enlargement:

• Functions as the master apical file to cleanly widen and finish large canal spaces after smaller files have paved the path

• Standard Anatomy Preparation:

• Optimized for teeth of average length (including maxillary incisors, premolars, and larger molar roots) where a 25mm reach is clinically ideal

• Heavy Debris Removal:

• Effectively clears thick dentinal shavings, necrotic pulp tissue, and vital tissue remnants from wide canal systems

• Obturation Retreatment:

• Used during root canal retreatments to engage, break up, and extract old, failing gutta-percha fillings

• Constant-Taper Protocols:

• Integrates directly into conventional crown-down or single-length rotary shaping techniques

• Universal Handpiece Integration:

• Operates reliably across all common rotary endodontic techniques designed for constant-taper sequences

Features

• Super-Elastic USA NiTi Alloy:

• Crafted from premium American nickel-titanium alloy, providing essential flexibility despite the thicker size #40 core

• Size #40 Geometry:

• Built with an ISO standardized 0.40mm tip diameter paired with a predictable, constant 0.04 taper profile

• No-Rebound Pre-Bending:

• The advanced metallurgy allows clinicians to manually shape and pre-bend the file to negotiate anatomy without the instrument springing back straight

• Flute Unwinding Safety Mechanism:

• Designed to physically unwind its flutes when exposed to excessive torque, offering a visual warning to discard the tool before an intracanal fracture occurs

• ISO Color Scheme:

• Outfitted with a silver handle indicating the 0.04 taper family, coupled with a black color ring to identify the size #40 tip

• Industry Compatibility:

• Comparable in function to systems like K3, Vortex, HyFlex NT, and Endosequence

Benefits

• High Breakage Protection:

• Delivers exceptional resistance to cyclical fatigue failure, drastically minimizing the risk of broken file segments inside the canal

• Anatomical Preservation:

• Stays centered within the natural root morphology, reducing common clinical errors like canal straightening, zipping, ledge formation, or apical wall perforation

• High Cutting Efficiency:

• Maximizes dentin removal and debris clearance, which shortens overall clinical chair time and enhances patient comfort

• Seamless Market Integration:

• Operates with the exact same rotational and torque metrics as established market standards like K3, Vortex, HyFlexNT, and Endosequence