Clinical Tip
HyFlex EDM for difficult anatomy with fatigue resistance. TruNatomy for conservative shaping in standard cases.
Specifications
| — | HyFlex EDM | TruNatomy |
|---|---|---|
| Manufacturer | Coltene | Dentsply Sirona |
| Alloy | CM-Wire (EDM manufactured) | Heat-Treated NiTi |
| Heat Treatment | CM-Wire | Other |
| Motion | Continuous Rotation | Continuous Rotation |
| Files | 8 | 6 |
| Taper | Variable | Variable |
| Cross-section | Triangular, Square, Variable (quadratic tip, trapezoidal middle, triangular coronal) | Off-centered parallelogram, Centered parallelogram (2 cutting edges) |
| Speed | 300–400 RPM | 500 RPM |
| Torque | 1.8–2.5 Ncm | 1.5 Ncm |
| Use Type | Reusable (limited) | Single-use |
Best For
HyFlex EDM
extreme curvaturesfatigue resistance priorityreusable with regeneration
TruNatomy
dentin preservationconservative accessminimally invasive
Key Features
HyFlex EDM
EDM + CM-Wire with regenerative memory — manufacturer reports enhanced fatigue resistance (bench data; figures vary by comparator and test setup)
TruNatomy
Slim 0.8mm MFD with off-centered parallelogram cross-section preserves peri-cervical dentin while maintaining shaping efficiency