Clinical Tip
Compare specifications above to choose the best system for your clinical case.
Specifications
| — | HyFlex EDM | K3XF |
|---|---|---|
| Manufacturer | Coltene | Kerr Endodontics |
| Alloy | CM-Wire (EDM manufactured) | R-Phase™ Heat-Treated NiTi |
| Heat Treatment | CM-Wire | R-Phase |
| Motion | Continuous Rotation | Continuous Rotation |
| Files | 8 | 24 |
| Taper | Variable | Variable |
| Cross-section | Triangular, Square, Variable (quadratic tip, trapezoidal middle, triangular coronal) | Asymmetric Triple-Fluted |
| Speed | 300–400 RPM | 350 RPM |
| Torque | 1.8–2.5 Ncm | 3 Ncm |
| Use Type | Reusable (limited) | Reusable (limited) |
Best For
HyFlex EDM
extreme curvaturesfatigue resistance priorityreusable with regeneration
K3XF
versatile multi-taper rotary shapingclinicians familiar with K3 techniquecases requiring wide taper selection (.04-.12)
Key Features
HyFlex EDM
EDM + CM-Wire with regenerative memory — manufacturer reports enhanced fatigue resistance (bench data; figures vary by comparator and test setup)
K3XF
Original K3 asymmetric triple-fluted design enhanced with R-Phase heat treatment for improved flexibility and cyclic fatigue resistance