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New dental sealer could make repeat root canals less painful and more successful

NCT ID NCT06973135

Disease control Sponsor: Saly Nazeer 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 07, 2026 · Updated 2 times

Summary

This study looks at whether a special dental sealer (bioceramic) helps heal infections and reduces pain after a repeat root canal done in one visit. About 70 adults with failed root canals and silent infections in their back teeth will take part. They will get the new sealer or a standard one, and healing will be checked with X-rays and CT scans over 12 months, while pain is tracked for a week.

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 70 people

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

Started

Jun 2025

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 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: 1. Mandibular molar teeth with previous unsuccessful endodontic treatment from ≥ 1 year with asymptomatic apical periodontitis. 2. Teeth with inadequate obturation. 3. Teeth with broken instruments that can be bypassed and/or retrieved and not present in the apical third or passing through the apex. 4. Teeth with periapical lesion. 5. Patient with the ages of 18-65 years. 6. Patient medically healthy and free from systemic diseases or with mild controlled systemic disease. ASA I, II \* (52). 7. Patient with no acute pain or extraoral swelling. 8. Patients who agreed to participate in the study and attend the control visits. \- Exclusion Criteria: 1. Teeth requiring retreatment with a poor prognosis (root canal morphology altered, large carious cavity, internal or external root resorption, root perforation) 2. Teeth with vertical root fracture or open apex. 3. Patient with systemic disorders related to bone metabolism and using drugs that may affect bone metabolism. 4. Pregnant patients. 5. Patient under antibiotics treatment 2 weeks before the treatment. 6. Patients who could not attend follow up will be excluded from the study \-

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Conditions

The condition(s) this trial relates to.

chronic apical periodontitis

As listed by the trial registrant

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

Asymptomatic apical periodontitis Root canal retreatment

Contacts and locations

Locations

  • faculty of dentistry Alexandria university

    Alexandria, Alexandria Governorate, 0000, Egypt

More trials for these conditions

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