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Laser and dye combo may boost gum disease treatment

NCT ID NCT07633405

Disease control Sponsor: Universidad Catolica Santiago de Guayaquil 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether adding a light-activated dye (photodynamic therapy) to standard deep cleaning improves gum disease more than cleaning alone. Thirty adults with periodontitis will have one side of their mouth treated with cleaning plus the dye/laser, and the other side with cleaning only. Gum pocket depth and bleeding will be measured after 30 days to see if the extra step helps.

What this could mean

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

Active substance
antimicrobial photodynamic therapy (toluidine blue O dye activated by a 650 nm laser)
What this could lead to
If it works, this could offer a simple, non-invasive way to improve gum health without antibiotics or surgery.
What could go wrong
This is a very small, early-stage trial with only 30 people and a short 30-day follow-up. Results may not last or apply to everyone.

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 30 people

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

Expected to start

Jul 2026

An estimate. Start dates often move.

Expected to finish

Sep 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

18 to 65 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: * Adults aged 18 to 65 years. * Diagnosis of Stage I, II, III, or IV periodontitis according to the 2018 World Workshop Classification. * Presence of at least two hemiarches with periodontal pockets ≥5 mm suitable for a split-mouth design. * Systemically healthy individuals. * No periodontal treatment received within the previous 6 months. * No use of antibiotics, anti-inflammatory drugs, or antiseptic mouth rinses within the previous 3 months. * Ability and willingness to provide written informed consent and attend follow-up visits. Exclusion Criteria: * Uncontrolled systemic diseases that may affect healing or immune response. * Use of antibiotics, corticosteroids, or immunosuppressive medications within the previous 3 months. * Active smokers consuming more than 10 cigarettes per day. * Pregnant or breastfeeding women. * Presence of dental implants, defective restorations, or teeth with Grade III mobility in the selected study sites. * Known allergy to toluidine blue O or any component of the photosensitizer. * Individuals unable or unwilling to attend the 30-day follow-up visit.

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Conditions

The condition(s) this trial relates to.

periodontal disorder periodontitis

As listed by the trial registrant

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

Periodontal disease Periodontitis

How to take part

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

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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.

Contacts and locations

Locations

  • Dental School, Catholic University of Santiago de Guayaquil (UCSG)

    Guayaquil, Guayas, 090101, Ecuador

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