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Could an extra shot after a root canal cut pain and pill use?

NCT ID NCT06655454

Symptom relief Sponsor: New York University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether giving patients an extra injection of a long-acting anesthetic (bupivacaine with epinephrine) right after a root canal can lower pain, improve quality of life, and reduce the need for painkillers. About 150 adults with tooth pain will be randomly assigned to get the extra shot, a placebo shot, or no extra shot. Researchers will track their pain and well-being for four days after treatment.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
bupivacaine with epinephrine
What this could lead to
If it works, this could give dentists a simple way to reduce pain and the need for painkillers after a root canal.
What could go wrong
This is a small, early-phase trial, so results may not apply to everyone. The extra injection might not help much more than a placebo.

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

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 150 people

The number the study aims to enrol. It can still change while the study runs.

Started

Nov 2024

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

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

18 years and older

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Medical ASA Class I or II 2. Patients above 18 years old 3. Patients with a blood pressure below 160/100 4. Patients who are treatment planned and have agreed to have emergency endodontic therapy or non-surgical root canal therapy with a pulpal diagnosis of symptomatic irreversible pulpitis according to the AAE Glossary of Endodontic Terms. 5. Patients must be able to comprehend and complete all study protocols, written consent, and questionnaires in English. Exclusion Criteria: 1. Medical ASA III or above 2. Patients who reported the use of tobacco or nicotine-containing products such as vapes, e-cigarettes, gums, or pouches and will not in the 48 hours following treatment 3. Patients who reported the use of any marijuana products or illicit drugs in the 48 hours prior to treatment and will not in the next 48 hours. 4. Patients who have taken opioids to control pain. 5. Pregnant patients 6. Patients with a blood pressure of 160/100 or greater 7. Patients with a known hypersensitivity or allergy to any local anesthetic agent of the amide group, or any other components of the two anesthetic solutions such as epinephrine, sodium metabisulfite used in the study. 8. Patients who have more than one tooth with odontogenic pain at the time of the screening. 9. Patients who are unable to consent and do not understand or are unable to read the questionnaires. 10. Patients who have had 4 1.7 ml carpules or more of anesthetic (Lidocaine and/ or Septocaine, 1:100,000) during standard care of treatment.

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Conditions

The condition(s) this trial relates to.

agnosia pulpitis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Analgesic use Pain assessment Quality of life (QOL)

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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.

Contacts and locations

Locations

  • New York University College of Dentistry

    RECRUITING

    New York, New York, 10010, United States

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