Cure My Disease

Don't miss your cure!

 Log in / Sign up

Which retainer keeps teeth straightest? a trial puts three to the test

NCT ID NCT07801768

Knowledge-focused Sponsor: Marmara University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 03, 2026 · Last updated Sep 04, 2026 · Updated 1 time

Summary

This trial compares three different fixed retainers, thin wires bonded behind the teeth, to see which best prevents teeth from shifting after orthodontic treatment. Researchers will measure tooth mobility and any return of crowding in 80 adults over six months. Participants are randomly assigned to one of three retainer materials or a control group without a retainer. The goal is to identify which retainer offers the best long-term stability and lowest breakage rate.

What this could mean

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

Active substance
Three types of fixed lingual retainers: CAD/CAM nitinol wire, manually bent multi-strand stainless steel wire, and stainless steel chain retainers
What this could lead to
If one retainer material proves more stable and less prone to breakage, it could guide orthodontists in choosing retainers that better prevent teeth from shifting after braces.
What could go wrong
This is a small, six-month study, so longer-term effects remain unknown. Results may not apply to all patients, and individual differences in oral health could influence outcomes.

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.

Participants

About 80 people

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

Started

Jun 2026

Expected to finish

Mar 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.

Who is studied

Healthy volunteers whose orthodontic treatment finalized and who waited for taking off braces.

Ages

18 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: 1. Patients who have undergone fixed orthodontic treatment at the Department of Orthodontics, Faculty of Dentistry, Marmara University, and whose treatment is nearing completion 2. Patients whose treatment duration is between 2 and 3 years 3. Patients with healthy periodontal tissue (plaque index and gingival index \<1; bleeding on probing \<10 per cent; no clinical attachment loss) 4. Patients aged between 18 and 35 5. Systemically healthy individuals 6. Patients with deep bite for whom Nitinol wire retainers, manufactured using CAD/CAM technology and capable of being fitted without occlusal contact due to their adaptability to the occlusion, have been applied 7. Patients for whom impressions cannot be taken to fabricate a retainer 8. Patients without deep bite or a gag reflex who have had a standard retainer fitted Exclusion Criteria: 1. Patients who have undergone orthodontic treatment at another clinic 2. Patients whose treatment lasted longer than 3 years or less than 2 years 3. Patients with a cleft lip and palate or a related syndrome 4. Patients with caries or dental prostheses on the teeth where the retainer is to be bonded 5. Smokers 6. Individuals with missing anterior teeth 7. Individuals taking systemic medication that affects the immune system or may affect periodontal health (e.g. steroids) 8. Pregnant or breastfeeding women

Get updates

Get notified about this study

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

Our safety recommendation!

By submitting, you agree to our Terms of use

Conditions

The condition(s) this trial relates to.

Tooth Mobility

As listed by the trial registrant

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

Orthodontic retainers Tooth mobility

Contacts and locations

Locations

  • Marmara University

    Istanbul, 34784, Turkey (Türkiye)

More trials for these conditions

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