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Which retainer keeps your smile straight and healthy?

NCT ID NCT07669129

Knowledge-focused Sponsor: University of Malaya 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 This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jul 24, 2026 · Updated 3 times

Summary

After braces come off, teeth can shift back. This study compares two clear retainer designs—full coverage (covers all inner tooth surfaces) and partial coverage (covers only part)—both used with a fixed wire behind the lower front teeth. Researchers will check gum health, comfort, breakages, and how well teeth stay straight over 6 months. The goal is to help orthodontists choose the best retainer for future patients.

What this could mean

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

Active substance
Vivera retainer (clear removable retainer)
What this could lead to
If this trial succeeds, orthodontists may have clearer guidance on which retainer design is best for gum health, comfort, and keeping teeth straight after braces.
What could go wrong
This is a small, early-stage study with only 42 participants, so results may not apply to everyone. Retainers can break or cause gum issues if not cleaned properly.

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 42 people

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

Expected to start

Jul 2026

An estimate. Start dates often move.

Expected to finish

Sep 2027

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 years and older

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: * Aged over 18 years. * Controlled systemic diseases and conditions. * Probing pocket depth ≤ 3 mm * Bleeding on probing \< 10 per cent * Full mouth plaque scores of less than 20 per cent * Just completed active orthodontic treatment involving lower arch * Patient consent to dual retention in the lower arch Exclusion Criteria: * Require a Hawley retainer in the lower arch. * Patients in retention phase requiring replacement of retainers * Uncontrolled systemic disease, including chronic or metabolic diseases. * Pregnant or lactating mothers within six months postpartum. * Taking medications that affect gingival health and architecture. * Have one or more missing anterior teeth. * Have congenital craniofacial deformities and syndromes, including cleft lip and/ or palate * Cigarette or vape smokers

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As listed by the trial registrant

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

Orthodontic retention

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Faculty of Dentistry, Universiti Malaya

    Kuala Lumpur, Kuala Lumpur, 50603, Malaysia

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