Green tea rinse put to the test against braces bad breath
NCT ID NCT07829224
First seen Sep 18, 2026 · Last updated Sep 18, 2026
Summary
Researchers are testing whether green tea mouthwash can reduce bad breath and improve gum health in young people wearing fixed braces. About 100 participants aged 15 to 25 will use one of four rinses: two green tea versions, a fluoride mouthwash, or a saline placebo. The team measures breath odor, gum condition, and stress-related markers in saliva before and during treatment.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- green tea mouthwash
- What this could lead to
- If green tea mouthwash helps, it could offer a cheap, easy rinse that reduces bad breath and gum irritation for people wearing braces.
- What could go wrong
- The trial is small and early, and mouthwash may not change gum health or stress markers at all. Green tea rinses can stain teeth or cause irritation for some people.
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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
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100 people
The number who actually took part.
- Started
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Jan 2026
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- 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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15 to 25 years
- Sex
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Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide 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: Age 15-25 years. Patients requiring or wearing upper and lower fixed orthodontic appliances in the initial phase of treatment. No craniofacial anomalies. Good oral hygiene according to the plaque index criterion stated in the study protocol. \- Exclusion Criteria: Current use of antibiotics or medications that may affect oral microbiota. Extensive dental caries. Severe periodontal disease. Mouth breathing. Systemic conditions. Pregnancy or breastfeeding. Unable to adhere to the study protocol or attend follow-up appointments. \-
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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
-
Al-Hadi University, College of Dentistry, Dental Specialized Center
Baghdad, Aljadriya, 10011, Iraq
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Other studies related to the condition(s) this trial covers.
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