• Maximum Rigidity: Large diameters (#90 to #140) ensure the instrument does not bend, allowing for powerful cleaning of the apical third.

• Superior Material Strength: Crafted from MANI’s proprietary "hard-fiber" 18-8 stainless steel to prevent breakage under the high torque required for large canals.

• High-Efficiency Shaping: The twisted square cross-section is optimized to lift large amounts of debris and dentin shavings efficiently.

• ISO Color-Coded: Standardized handles allow for quick size transitions (#90-White, #100-Yellow, #120-Red, #140-Blue, etc.).

The MANI® K-File (#90–140) represents the largest diameter hand instruments in the MANI endodontic range. These heavy-duty files are designed for the final stages of canal preparation in wide root canals. Due to their significant thickness, they provide maximum rigidity and are primarily used for smoothing the canal walls and preparing the apical seat for obturation in wide or mature teeth.

• Quantity: 6 pieces per sliding cassette.

• Casing: Transparent polycarbonate box for safe storage and organization.

• Application: Ideal for wide canals, resorbed roots, or teeth with open apices.

• Motion: Use a reaming motion (clockwise rotation) or a vertical filing motion to smooth the walls.

• Apical Fit: These sizes are typically the final files used before drying and filling the canal.

• Irrigation: Copious irrigation is necessary as these large files generate a significant amount of dentin debris.

• Cleaning: Must be thoroughly cleaned of debris and autoclaved before the first clinical use.

While these large files are very strong, always check the flutes for rust or debris buildup after sterilization.