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 Concept

# Cyclic Fatigue

## Definition

Metal fatigue caused by repeated tension-compression cycles as a rotating file flexes around a canal curvature. It is the primary cause of unexpected file separation in curved canals.

## Clinical Guides

[Complications & Troubleshooting](https://endo-guide.app/complications)[Canal Preparation](https://endo-guide.app/canal-preparation)

## Related Terms

[Torsional Resistance](https://endo-guide.app/glossary/torsional-resistance)[Torque](https://endo-guide.app/glossary/torque)[Screw-In Effect (Taper Lock)](https://endo-guide.app/glossary/screw-in)[Glide Path](https://endo-guide.app/glossary/glide-path)[Working Length](https://endo-guide.app/glossary/working-length)[Apex Locator](https://endo-guide.app/glossary/apex-locator)

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