Clinical Tip
K3XF pairs the asymmetric triple-fluted K3 design with R-Phase heat treatment across 24 configurations (.04 to .12 tapers) at 350 RPM / 3.0 Ncm and is reusable within limits. EdgeFile X7 is a single-use .04/.06 crown-down system in Fire-Wire wire with no shape memory. Choose K3XF for taper breadth and reuse, X7 for a slimmer pre-bendable single-use workflow.
Specifications
| — | EdgeFile X7 | K3XF |
|---|---|---|
| Manufacturer | EdgeEndo | Kerr Endodontics |
| Alloy | Fire-Wire™ Annealed Heat-Treated NiTi | R-Phase™ Heat-Treated NiTi |
| Heat Treatment | Fire-Wire | R-Phase |
| Motion | Continuous Rotation | Continuous Rotation |
| Files | 14 | 24 |
| Taper | 4%, 6% | Variable |
| Cross-section | Parabolic / variable diamond | Asymmetric Triple-Fluted |
| Speed | 300 RPM | 350 RPM |
| Torque | 300 Ncm | 3 Ncm |
| Use Type | Single-use | Reusable (limited) |
Best For
EdgeFile X7
crown-down rotary with enhanced fatigue resistancedual taper versatility (.04/.06)mid-cost North American market
K3XF
versatile multi-taper rotary shapingclinicians familiar with K3 techniquecases requiring wide taper selection (.04-.12)
Key Features
EdgeFile X7
Fire-Wire AHT eliminates shape memory for canal-contouring flexibility with enhanced cyclic fatigue resistance (manufacturer data)
K3XF
Original K3 asymmetric triple-fluted design enhanced with R-Phase heat treatment for improved flexibility and cyclic fatigue resistance
Related Clinical Links
Manufacturer pages
Motion categories