Tiny file trick may ease root canal pain

NCT ID NCT07239752

First seen Nov 20, 2025 · Last updated Jun 14, 2026 · Updated 26 times

Summary

This study looks at whether a technique called 'apical patency'—gently moving a small file past the root tip during cleaning—can lower pain after a root canal. It will involve 48 adults with a dead nerve and infected root tip in a back molar. Participants will be randomly assigned to get the technique or not, and will rate their pain over 72 hours.

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