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Which root canal file leaves less pain? trial puts two systems to the test

NCT ID NCT05747183

Symptom relief Sponsor: Gulf Medical University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 14, 2026 · Last updated Sep 15, 2026 · Updated 1 time

Summary

Researchers compare two root canal file systems, ProTaper Gold and ProTaper Ultimate, to see if they differ in how much pain patients feel afterward. The trial enrolls 40 adults with permanent lower molars diagnosed with symptomatic irreversible pulpitis and apical periodontitis. Each participant receives root canal preparation with one of the two systems, and researchers track pain intensity using a visual scale.

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 preparation using ProTaper Ultimate or ProTaper Gold files
What this could lead to
If one file system causes less pain after root canal treatment, dentists could choose it to make the procedure more comfortable for patients.
What could go wrong
This is a small study of 40 people with a specific tooth condition, so the results may not apply to all root canals. Pain after treatment varies widely and can be influenced by many factors beyond the file used.

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

40 people

The number who actually took part.

Started

Sep 2022

Finished

Jul 2024

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 70 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: * Patient was diagnosed with symptomatic irreversible pulpits and symptomatic apical periodontitis. * 18-70 years old patients * Permanent mandibular first molars. * Teeth with a fully matured root. * Restorable teeth indicated for endodontic treatment. * Healthy patients. Exclusion Criteria: * Complex root canal morphology * Calcified roots. * Teeth with internal and external resorption. * Medically compromised patients. * Restricted mouth openings (trismus).

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Conditions

The condition(s) this trial relates to.

pulpitis

As listed by the trial registrant

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

Post endodontic pain

Contacts and locations

Locations

  • Gulf Medical University

    Ajman, Ajman Emirate, 4184, United Arab Emirates

More trials for these conditions

Other studies related to the condition(s) this trial covers.