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New Tooth-Saving method could help kids avoid root canal failure

NCT ID NCT00472173

Disease control Sponsor: Assistance Publique - Hôpitaux de Paris 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tested a new way to treat children aged 6 to 18 who have a dead nerve in an immature tooth. The new method uses a material called MTA to help the tooth form a hard barrier, compared to the standard treatment with calcium hydroxide. The goal was to see which method works better at closing the tooth root over 12 months.

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

Phase 3

Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.

Participants

34 people

The number who actually took part.

Start date

May 2007

Finished

May 2011

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

6 to 18 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: * Indication of apexification treatment of an anterior immature tooth * Patients aged 6 to 18 * Enlightened agreement of the patient and his/her legal representatives * Prerequisite medical examination Exclusion Criteria: General disease * diabetes * immunosuppression of whatever origin (AIDS, drugs, …) * severe asthma * chronical disease requiring treatment * eating disorders (anorexia, bulimia, malnutrition, …) Oral disease * periodontal disease * Administration of corticoids in a period of 3 months preceding the inclusion * Patient with no social security cover

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Conditions

The condition(s) this trial relates to.

dental pulp necrosis

As listed by the trial registrant

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

Dental pulp necrosis

Contacts and locations

Locations

  • Hôpital Bretonneau

    Paris, 75018, France

More trials for these conditions

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