Could a simple pill make root canals less painful?
NCT ID NCT07743372
First seen Aug 03, 2026 · Last updated Aug 04, 2026 · Updated 1 time
Summary
This trial tests whether taking a single dose of diclofenac potassium before dental treatment can improve the numbing effect of local anesthesia and reduce pain after the procedure. Adults with severe tooth pain from irreversible pulpitis in lower molars will receive either 50mg, 100mg, or a placebo before treatment. The study measures how well the anesthesia works and how much pain is felt six hours later.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- diclofenac potassium
- What this could lead to
- If effective, a single pre-treatment dose could make dental procedures more comfortable and reduce post-procedure pain for people with severe tooth inflammation.
- What could go wrong
- This is a small early-stage trial, and results may not apply to all patients. Diclofenac can cause side effects like stomach irritation or allergic reactions.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 90 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Aug 2026
An estimate. Start dates often move.
- Expected to finish
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Feb 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients with symptomatic irreversible pulpitis. * Patients with moderate to severe pain. * Mandibular molars * Patients with the ability to understand and use the pain scale Exclusion Criteria: * Patients allergic to any medication or material to be used in the study. * Pregnant and lactating females. * Patients taking medications affecting pain perception in the last 12 hours. * Patients having more than one symptomatic molar in the same quadrant. * Patients with contributory medical history (ASA I or II).
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
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Other studies related to the condition(s) this trial covers.
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