Clinical Tip
Both aim at conservative shaping at 500 RPM. TruNatomy uses regressive tapers with a 0.8 mm maximum flute diameter and a uniform 1.5 Ncm across its Glider and Small/Prime/Medium/Large files; ZenFlex uses constant .04/.06 tapers with a 1 mm flute diameter, controlled-memory wire and torque set per file. Choose TruNatomy for the slimmer regressive design and single setting, ZenFlex for constant-taper size selection and pre-bendability.
Specifications
| — | TruNatomy | ZenFlex |
|---|---|---|
| Manufacturer | Dentsply Sirona | Kerr Dental |
| Alloy | Heat-Treated NiTi | Heat-Treated NiTi (Controlled Memory) |
| Heat Treatment | Other | CM-Wire |
| Motion | Continuous Rotation | Continuous Rotation |
| Files | 6 | 10 |
| Taper | Variable | 4%, 6% |
| Cross-section | Off-centered parallelogram, Centered parallelogram (2 cutting edges) | Triangular |
| Speed | 500 RPM | 500 RPM |
| Torque | 1.5 Ncm | 1–3.5 Ncm |
| Use Type | Single-use | Single-use |
Best For
TruNatomy
dentin preservationconservative accessminimally invasive
ZenFlex
minimally invasive shapingcontrolled-memory flexibilitydual taper strategy (.04/.06)
Key Features
TruNatomy
Slim 0.8mm MFD with off-centered parallelogram cross-section preserves peri-cervical dentin while maintaining shaping efficiency
ZenFlex
Violet oxide surface with 1mm flute diameter for minimally invasive shaping and excellent flexibility
Related Clinical Links
Manufacturer pages
Motion categories