Clinical Tip
Compare specifications above to choose the best system for your clinical case.
Specifications
| — | E-Flex Gold | K3XF |
|---|---|---|
| Manufacturer | Eighteeth | Kerr Endodontics |
| Alloy | Control Memory NiTi (gold heat-treated) | R-Phase™ Heat-Treated NiTi |
| Heat Treatment | Gold Heat-Treated | R-Phase |
| Motion | Continuous Rotation | Continuous Rotation |
| Files | 9 | 24 |
| Taper | Variable | Variable |
| Cross-section | Not specified | Asymmetric Triple-Fluted |
| Speed | 300–350 RPM | 350 RPM |
| Torque | 2.5–3 Ncm | 3 Ncm |
| Use Type | Single-use | Reusable (limited) |
Best For
E-Flex Gold
cost-effective gold heat-treated rotary systemintegrated workflow (orifice opener + glider + shaping in one family)single uniform speed/torque setting (350 RPM / 2 Ncm)
K3XF
versatile multi-taper rotary shapingclinicians familiar with K3 techniquecases requiring wide taper selection (.04-.12)
Key Features
E-Flex Gold
Gold heat-treated CM wire with integrated orifice opener (17/.08) and glider (19/.02) — variable pitch design with non-cutting safety tip
K3XF
Original K3 asymmetric triple-fluted design enhanced with R-Phase heat treatment for improved flexibility and cyclic fatigue resistance