3D-Printed retainers take on traditional wires in new study

NCT ID NCT07538869

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 compared custom 3D-printed metal fixed retainers to conventional wire retainers in 64 people who had finished orthodontic treatment. The main goal was to see how often the retainers came loose (bond failure) and how long they took to place. The 3D-printed retainers are designed from digital scans for a precise fit, but long-term evidence is still limited.

What this could mean

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

Active substance
3D-printed metal fixed retainer (device)
What this could lead to
If successful, 3D-printed retainers could offer a more precise fit and potentially fewer bond failures than traditional wire retainers.
What could go wrong
This is a small, completed trial with only 64 participants, so results may not apply to everyone. Long-term data is still limited.

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

64 people

The number who actually took part.

Started

Apr 2025

Finished

Oct 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

13 to 35 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: * Age ≥ 13 years * Complete permanent dentition up to second molars * Completed Class I orthodontic treatment and requiring a mandibular fixed -bonded retainer * No sex predilection. Exclusion Criteria: * Enamel defects that may compromise bonding (e.g., hypoplasia, fluorosis) * Poor oral hygiene * Active dental or periodontal pathology at the site of intervention * Lingual restorations on mandibular anterior teeth * Poor compliance or inability to attend follow-up visits * Psychological or medical conditions that may interfere with study participation

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Bond pair are added.

Our safety recommendation!

By submitting, you agree to our Terms of use

Conditions

The condition(s) this trial relates to.

Pair Bond

As listed by the trial registrant

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

Contacts and locations

Locations

  • Amany Eltantawy

    Giza, Cairo University, Egypt

More trials for these conditions

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