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Braces and bacteria: new study looks at how orthodontic appliances change mouth microbes

NCT ID NCT05532241

Knowledge-focused Sponsor: University of Rijeka 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at how metal and ceramic braces change the bacteria in dental plaque (biofilm) and affect gum health in 80 people with crooked teeth. Researchers will measure the types and amounts of bacteria, plaque buildup, and gum swelling. The goal is to understand how different braces influence oral infections and how well standard cleaning methods work.

What this could mean

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

What this could lead to
If successful, this study could help dentists better manage gum health and infections in people wearing braces.
What could go wrong
This is an observational study focused on understanding biofilm changes, not testing a new treatment. Results may not lead to immediate clinical changes.

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

About 80 people

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

Started

Nov 2021

Expected to finish

Jun 2026

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

13 to 18 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: * malocclusion with moderate or great need for orthodontic treatment (Index of Orthodontic Treatment Need grades \>=3) Exclusion Criteria: * neurodevelopmental disorders * intellectual disability * oligodontia * congenital craniofacial anomalies * orofacial clefts

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Conditions

The condition(s) this trial relates to.

gingivitis Malocclusion malocclusion due to protuberant upper front teeth

As listed by the trial registrant

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

Gingivitis Malocclusion

Contacts and locations

Locations

  • University of Rijeka Faculty of Dental Medicine

    Rijeka, 51000, Croatia

  • University of Rijeka, Faculty od Dental Medicine, Dental Clinic

    Rijeka, 51000, Croatia

  • University of Rijeka, Faculty of Dental Medicine

    Rijeka, 51000, Croatia

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