Clinical Tip
HyFlex EDM for EDM-surface fatigue resistance in extreme curvatures. ProTaper Ultimate for a gold K-file-free sequence in complex, curved canals.
Specifications
| — | HyFlex EDM | ProTaper Ultimate |
|---|---|---|
| Manufacturer | Coltene | Dentsply Sirona |
| Alloy | CM-Wire (EDM manufactured) | M-Wire / Gold / Blue Heat-Treated NiTi |
| Heat Treatment | CM-Wire | Gold Heat-Treated |
| Motion | Continuous Rotation | Continuous Rotation |
| Files | 8 | 8 |
| Taper | Variable | Variable |
| Cross-section | Triangular, Square, Variable (quadratic tip, trapezoidal middle, triangular coronal) | Parallelogram (variable acute angles, off-centered) |
| Speed | 300–400 RPM | 400 RPM |
| Torque | 1.8–2.5 Ncm | 4 Ncm |
| Use Type | Reusable (limited) | Single-use |
Best For
HyFlex EDM
extreme curvaturesfatigue resistance priorityreusable with regeneration
ProTaper Ultimate
5th generation ProTaper evolutionK-file free workflowcomplex anatomy with manual fallback for severe curves
Key Features
HyFlex EDM
EDM + CM-Wire with regenerative memory — manufacturer reports enhanced fatigue resistance (bench data; figures vary by comparator and test setup)
ProTaper Ultimate
Slider-Shaper-Finishers concept with file-specific heat treatments: M-Wire for the Slider, Gold for the Shaper and F1-F3, Blue for the auxiliary finishers (FX/FXL) in larger canals