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Dye and light: a new weapon against Kids' cavities?

NCT ID NCT07539181

Disease control Sponsor: University of Nove de Julho 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 This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This study tests whether using plaque-disclosing dyes (like erythrosine) with a special light can kill more cavity-causing bacteria in children aged 3 to 7 years. Seventy-two kids at high risk for cavities will get either standard dental cleaning or cleaning plus the dye-and-light treatment. The goal is to see if this simple method can better control dental plaque and prevent cavities.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Erythrosine and GC TriPlaque ID Gel (plaque disclosing agents used as photosensitizers in antimicrobial photodynamic therapy)
What this could lead to
If it works, this could offer a simple, non-invasive way to reduce cavity-causing bacteria in young children during dental cleanings.
What could go wrong
This is a small, early-stage trial (72 children) testing a new use for existing agents, so results may not be conclusive or widely applicable. The procedure may not be more effective than standard cleaning.

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

About 72 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

May 2026

An estimate. Start dates often move.

Expected to finish

Aug 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

3 to 7 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: * Children aged 3 to 7 years * Both sexes * Good general health status * Classified as high caries risk according to the CAMBRA protocol (score ≥ +4 or presence of at least one disease indicator associated with two or more biological risk factors) * Written informed consent obtained from a parent or legal guardian Exclusion Criteria: * Presence of systemic diseases * Use of antibiotics within the last 30 days * Use of antimicrobial mouthwash within 48 hours prior to sample collection * Presence of structural dental alterations that may interfere with the standardization of the procedure * Uncooperative behavior preventing safe clinical examination and intervention

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Conditions

The condition(s) this trial relates to.

dental caries Dental Plaque

As listed by the trial registrant

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

Dental plaque

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  2. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

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