Root canal relief? tiny file technique tested for less pain
NCT ID NCT07239752
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study will test if a technique called 'apical patency'—gently passing a small file just past the root tip during cleaning—can reduce pain after a root canal. 48 adults with a dead nerve and infection in a back molar will be randomly assigned to receive either this technique or standard cleaning. They will rate their pain at several time points over 72 hours. The goal is to see if this simple change makes a difference in post-treatment discomfort.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- Apical patency technique (passing a small file slightly beyond the root tip during root canal cleaning)
- What this could lead to
- If it works, this could give dentists a simple way to reduce pain after root canal treatment.
- What could go wrong
- This is a small, early-stage trial with only 48 people, so results may not apply to everyone. The technique might not reduce pain at all.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
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Other studies related to the condition(s) this trial covers.
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