Gum trouble with braces? probiotic shows promise for healthier smiles
NCT ID NCT07548138
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether taking a specific probiotic (Limosilactobacillus reuteri) can improve gum health in adults with braces who also have gingivitis (gum inflammation). One hundred participants either received the probiotic or no supplement. Researchers measured gum bleeding and plaque buildup to see if the probiotic helped reduce inflammation.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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100 people
The number who actually took part.
- Started
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Dec 2021
- Finished
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Mar 2025
- Lead sponsor
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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
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18 to 59 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Generally healthy patient * Age 18-59 years * Fixed-appliance orthodontic treatment * Plaque-induced gingivitis (BOP \> 10%, PD ≤ 4 mm) Exclusion Criteria: * Hypersensitivity to product components * Smoking * Use of any probiotics within the past 30 days * Antibiotic or other antimicrobial therapy within the past month * Use of antibacterial chlorhexidine rinses within the past 2 weeks * Age \< 18 or \> 59 years.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Medical University of Warsaw
Warsaw, Poland
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Other studies related to the condition(s) this trial covers.
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