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New study tests best way to shape root canals for less pain

NCT ID NCT06833515

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study looked at 168 adults with a silent tooth infection (asymptomatic apical periodontitis) to see if different root canal shaping tools affect pain after the procedure. Participants received one of four shaping methods, including using a single file or combining files. Their pain was measured using a visual scale right after treatment and three days later. The goal was to find which approach causes the least discomfort.

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

168 people

The number who actually took part.

Started

Mar 2025

Finished

Mar 2026

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

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: * Adult, systemically healthy patients aged18-65years(category:AmericanSocietyof Anesthesiologists class 1. * Patients diagnosed with symptomatic reversible pulpitis and having mandibular first and second premolar teeth without percussion pain. * Teeth with prolonged response to the coldpulp test (Endo-Frost, Coltene-Whaledent, Allstetten, Switzerland) (teeth where pain persists for a long time after stimulus removal) * Teeth with normal periapical appearance(periapical index 2), a single root canal andaroot canal inclination less than 20° on a parallel periapical radiograph * Teeth with moderately sharp spontaneous pain (preoperative visual analog scale \[VAS\] score 4-6) * Teeth where number 10 K files can reach and fit the working lenght * Patients who were able to understand the informed consent form and pain recording scales used in the study were included Exclusion Criteria: * Patients who are pregnant and lactating * Patients who received analgesics or anti inflammatory drugs in the last 12 hours and antibiotics for the last 1 month * Patients with severe periodontal defect or deep periodontal pocket (probing depth.3 mm)and poor oral hygiene * Teeth too broken down, difficult to isolate with rubber dam * Teeth without occlusal contact * Presence of multiple teeth requiring treatment, a previous treatment history and an open apex * Teeth with calcified root canal, root resorption, crown and/or root fracture, multiple root canals, post, and sinus tract were excluded from the study -• VAS pain score of 1 and above

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Conditions

The condition(s) this trial relates to.

chronic apical periodontitis Pain Pain, Postoperative periodontitis

As listed by the trial registrant

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

Chronic apical periodontitis of pulpal origin Post operative pain

Contacts and locations

Locations

  • Nezif Çelik

    Karaköprü, Şanlıurfa, 63300, Turkey (Türkiye)

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