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Green tea rinse put to the test against braces bad breath

NCT ID NCT07829224

Symptom relief Sponsor: Universiti Sains Malaysia Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 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.

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

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

100 people

The number who actually took part.

Started

Jan 2026

Expected to finish

Dec 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

15 to 25 years

Sex

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

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.

Halitosis

As listed by the trial registrant

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

Halitosis Orthodontic treatment Periodontal health

Contacts and locations

Locations

  • Al-Hadi University, College of Dentistry, Dental Specialized Center

    Baghdad, Aljadriya, 10011, Iraq

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