# EdgeFile X7 vs K3XF

EdgeEndo · Kerr Endodontics

[TR](https://endo-guide.app/tr/compare/edgefile-x7-vs-k3xf)

## EdgeFile® X7

EdgeEndo

Fire-Wire Crown-Down Rotary

[View protocol →](https://endo-guide.app/system/edgefile-x7)

## K3XF™

Kerr Endodontics

R-Phase Enhanced K3 Design

[View protocol →](https://endo-guide.app/system/k3xf)

Clinical Tip

K3XF pairs the asymmetric triple-fluted K3 design with R-Phase heat treatment across 24 configurations (.04 to .12 tapers) at 350 RPM / 3.0 Ncm and is reusable within limits. EdgeFile X7 is a single-use .04/.06 crown-down system in Fire-Wire wire with no shape memory. Choose K3XF for taper breadth and reuse, X7 for a slimmer pre-bendable single-use workflow.

## Specifications

| — | EdgeFile X7 | K3XF |
| --- | --- | --- |
| Manufacturer | EdgeEndo | Kerr Endodontics |
| Alloy | Fire-Wire™ Annealed Heat-Treated NiTi | R-Phase™ Heat-Treated NiTi |
| Heat Treatment | Fire-Wire | R-Phase |
| Motion | Continuous Rotation | Continuous Rotation |
| Files | 14 | 24 |
| Taper | 4%, 6% | Variable |
| Cross-section | Parabolic / variable diamond | Asymmetric Triple-Fluted |
| Speed | 300 RPM | 350 RPM |
| Torque | 300 Ncm | 3 Ncm |
| Use Type | Single-use | Reusable (limited) |

## Best For

EdgeFile X7

crown-down rotary with enhanced fatigue resistancedual taper versatility (.04/.06)mid-cost North American market

K3XF

versatile multi-taper rotary shapingclinicians familiar with K3 techniquecases requiring wide taper selection (.04-.12)

## Key Features

EdgeFile X7

Fire-Wire AHT eliminates shape memory for canal-contouring flexibility with enhanced cyclic fatigue resistance (manufacturer data)

K3XF

Original K3 asymmetric triple-fluted design enhanced with R-Phase heat treatment for improved flexibility and cyclic fatigue resistance

[EdgeFile X7 Full protocol](https://endo-guide.app/system/edgefile-x7)[K3XF Full protocol](https://endo-guide.app/system/k3xf)

## Related Clinical Links

Manufacturer pages

[EdgeEndo Systems](https://endo-guide.app/manufacturer/edgeendo)[Kerr Dental Systems](https://endo-guide.app/manufacturer/kerr)

Motion categories

[Continuous Rotation](https://endo-guide.app/category/continuous-rotation)

Related comparisons

[EdgeFile X7 vs EdgeTaper Platinum](https://endo-guide.app/compare/edgefile-x7-vs-edgetaper-platinum)[EdgeFile X7 vs EndoSequence](https://endo-guide.app/compare/edgefile-x7-vs-endosequence)[EdgeFile X7 vs HyFlex CM](https://endo-guide.app/compare/edgefile-x7-vs-hyflex-cm)[K3XF vs EndoSequence](https://endo-guide.app/compare/endosequence-vs-k3xf)[K3XF vs ProTaper Gold](https://endo-guide.app/compare/k3xf-vs-protaper-gold)[K3XF vs ZenFlex](https://endo-guide.app/compare/k3xf-vs-zenflex)

Independent educational reference. Always consult official manufacturer Instructions for Use (DFU) before clinical procedures.

[Found an error? Let us know](https://ig.me/m/endoleventyuksel)

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Reviewed by

Uzm. Dt. Levent Yüksel

DDS · Endodontist

Endodontist — DDS, Hacettepe University; endodontics specialty training, Ankara University. 10+ years of clinical experience. Sole author and reviewer of EndoGuide content.

[About the author](https://endo-guide.app/about)[Editorial policy](https://endo-guide.app/editorial-policy)[Clinical profile](https://drleventyuksel.com/)

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