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Charcoal toothbrush bacteria showdown: which brush is cleaner?

NCT ID NCT07365748

Knowledge-focused Sponsor: MTI University 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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 compared bacteria on charcoal-infused toothbrushes versus standard nylon ones. 36 healthy adults and children used each brush for one day and one week, then returned them for lab testing. Researchers counted the bacteria to see if charcoal bristles stay cleaner. The goal was to find out if eco-friendly charcoal toothbrushes are a more sanitary option for daily oral care.

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

36 people

The number who actually took part.

Started

Nov 2025

Finished

Jan 2026

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

8 to 35 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: * Participants free of any systemic diseases. * Participants falling into one of two specific age groups: A) Children aged 8 to 11 years. B) Adults aged 18 to 35 years. * Willingness to use the assigned toothbrush type (Eco-friendly charcoal or standard nylon). * Ability to follow study instructions regarding brushing technique and storage. Exclusion Criteria: * Patients with open carious lesions. * Participants with poor oral hygiene, defined as plaque index scores greater than 2. * Participants with severe gingivitis, defined as gingival index score greater than 2. * Current throat infections. * Irregular brushing frequency (not brushing twice daily). * Current use of mouthwash or antibacterial toothpastes. * Current smokers. * Medically compromised individuals. * Unwillingness to use a charcoal Eco-friendly toothbrush.

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As listed by the trial registrant

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

To evaluate antimicrobial effect of eco-friendly toothbrush

Contacts and locations

Locations

  • Dental clinic

    Cairo, 11585, Egypt