[Back to Glossary](https://endo-guide.app/glossary)

 Concept

# Torque

## Definition

The rotational force an endodontic motor applies to a file, set in newton-centimetres (Ncm). The torque limit is the point at which the motor stops driving forward, usually reversing or halting, so a lower limit can protect a fine file from torsional overload while a limit set above what the file carries removes that protection. Manufacturer values differ per file and are listed in each system's instructions for use.

## Related Terms

[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)[Crown-Down Technique](https://endo-guide.app/glossary/crown-down-technique)[Canal Transportation](https://endo-guide.app/glossary/canal-transportation)

---

Canonical HTML: https://endo-guide.app/glossary/torque · Agent guide: https://endo-guide.app/llms.txt