Good bacteria on a string: can probiotic floss fight gum disease?
NCT ID NCT07149493
First seen Nov 01, 2025 · Last updated Jun 23, 2026 · Updated 34 times
Summary
This study tested a special dental floss coated with friendly bacteria (probiotics) to see if it could reduce harmful mouth germs and improve gum health. Thirty-three healthy men used the probiotic floss and a plain floss for two weeks each, with a break in between. Researchers checked plaque, gum bleeding, and bacteria levels. The goal is to find a simple way to prevent gum disease.
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This is a summary of
the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Locations
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St. Anne's University Hospital
Brno, 65691, Czechia
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
Ligilactobacillus salivarius (probiotic bacteria)
What this could lead to
If it works, this could point toward a simple way to improve gum health and reduce harmful bacteria using everyday dental floss.
What could go wrong
This was a small, early study in only 33 healthy men, so results may not apply to everyone. The probiotic effect may be weak or temporary.
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.