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Root canal pain study: tiny file trick may ease ache

NCT ID NCT07233590

Symptom relief Sponsor: Cukurova University Source: ClinicalTrials.gov ↗

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study looked at whether gently extending a tiny file just beyond the tooth's tip during root canal treatment can lower pain afterward. 72 adults with pain-free, single-rooted teeth took part. One group had the tip kept open, the other did not. Pain levels were tracked for 48 hours. The goal was to see if this simple step makes a difference in comfort.

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

72 people

The number who actually took part.

Started

Oct 2024

Finished

Feb 2025

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 65 years

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: * Individuals aged 18-65 years, classified as ASA I or ASA II according to the American Society of Anesthesiologists (ASA), who had not taken analgesics for at least 6 hours prior to treatment. * Asymptomatic, single-rooted vital teeth without spontaneous pain (including teeth perforated during prosthetic preparation or teeth adjacent to a cyst in an area scheduled for cyst surgery). * Radiographic evidence of mature apices with no periapical pathology; periodontal probing depth ≤ 3 mm; and gingival health meeting Glickman's criteria. * Individuals who are literate, able to provide written informed consent, and capable of understanding and using the pain scale. Exclusion Criteria: * Patients who are pregnant or have a cardiac pacemaker. * Patients who used antibiotics within the past month or who required antibiotic prophylaxis. * Presence of extensive restorations in the tooth of interest. * Patients reporting concurrent pain in adjacent teeth. * Dental or orofacial pain of non-endodontic origin.

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As listed by the trial registrant

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

Postoperative pain after endodontic treatment

Contacts and locations

Locations

  • Cukurova University

    Adana, Sarıçam, 01250, Turkey (Türkiye)

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