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New root canal technique could mean less pain for patients

NCT ID NCT07357233

Symptom relief Sponsor: Alexandria 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests a new way to do root canals that skips the manual step of scouting and widening the canal by hand. Instead, dentists use a special rotary file from the start. The goal is to see if this causes less pain after the procedure compared to the traditional method. The trial involves 34 adults with infected lower molars and will also measure pain-related chemicals in the blood.

What this could mean

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

Active substance
root canal instrumentation technique (manual-less vs conventional rotary)
What this could lead to
If successful, this could point toward a less painful root canal procedure by skipping the manual scouting step.
What could go wrong
This is a small, early-stage study with only 34 participants, so results may not apply to everyone. Pain is subjective and hard to measure precisely.

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

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

About 34 people

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

Started

Sep 2025

Expected to finish

Mar 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 to 50 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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. Patients with symptomatic irreversible pulpitis and apical periodontitis in mandibular molars with closed apex.(17) 2. Healthy males and females (Category: American Society of Anesthesiologists class I). 3. Age of patients range from 18 to 50 years old. 4. Those who could understand the use of the numeric rating scale (NRS) for pain. 5. In cases where radiographs show no root resorption or abnormal anatomy. 6. Patients with good oral hygiene and free from periodontal diseases. Exclusion Criteria: 1. Allergy to anesthetics. 2. Pregnancy 3. Unrestorable teeth. 4. Patient on analgesics. 5. Prescence of root resorption or abnormal anatomy.

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Conditions

The condition(s) this trial relates to.

Pain, Postoperative periapical periodontitis pulpitis

As listed by the trial registrant

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

Post operative pain

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

  • Alexandria Faculty of Dentistry

    RECRUITING

    Alexandria, Egypt

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