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Tiny screws may improve braces efficiency

NCT ID NCT01025141

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 whether using small titanium screws (miniscrews) as anchors works better than using other teeth for support during orthodontic treatment. 99 patients aged 12 to 50 who needed two upper premolars extracted took part. The main goal was to see how well the extraction gaps closed after 8 months.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Miniscrew (skeletal anchorage device)
What this could lead to
If successful, miniscrews could offer a more stable and efficient way to close gaps after tooth extraction during braces treatment.
What could go wrong
This is a small, completed study with no phase designation, so results may not apply broadly. Miniscrews carry risks of failure, infection, or 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

99 people

The number who actually took part.

Started

Feb 2009

Finished

Feb 2014

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

12 to 50 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: * Aged from 12 to 50 years old * Patient need orthodontic treatment with extraction of 2 maxillary bicuspid * Patient has signed informed consent Exclusion criteria: * Patient younger than 12 and older than 50 years old * Patient without social security affiliation * Patient with a medical condition that indicates against orthodontic treatment

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As listed by the trial registrant

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

Tooth extraction status nos

Contacts and locations

Locations

  • Bretonneau Hospital

    Paris, 75018, France

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