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Toothbrush bristle showdown: which shape cleans better without hurting gums?

NCT ID NCT07306026

Symptom relief Sponsor: State University of New York at Buffalo Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 21, 2026 · Updated 2 times

Summary

This study tests whether toothbrushes with tapered bristles are better at removing plaque and reducing gum bleeding than regular round bristles, without causing scratches. About 70 adults with gum disease will use one of two toothbrushes at home for 4 weeks. Researchers will check plaque, gum pocket depth, bleeding, and any gum damage.

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 70 people

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

Started

Oct 2025

Expected to finish

Nov 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 70 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: * Must have read, understood and signed an informed consent prior to being entered into the study. * Must be 18 to 70 years of age, male or female. * Have at least 20 natural or restored teeth, not including implants. * Must have average Plaque Index of greater than 2 at screening. * Must have more than 20% of pockets with bleeding on probing at screening. * Agree not to have a dental prophylaxis or any other elective, non-emergency dental procedures any time during the study. * Agree to refrain from regular oral hygiene regimen for 24 hours and eating for 4 hours before the appointment in the study. * Agree to abstain from the use of any dental products other than those provided in the study. * Agree to comply with the conditions and schedule of the study. Exclusion Criteria: * Physical limitations or restrictions that might preclude normal tooth brushing. * Evidence of gross oral pathology * Periodontal probing pocket depths (PPD) ≥ 5mm. * Evidence of major soft tissue lesions or trauma at the baseline visit as determined by the examiner. * Chronic disease with concomitant oral manifestations * Subjects who are currently undergoing, or require, extensive dental work, orthodontic treatment or periodontal surgery, or orthodontic treatment in the preceding 3 months * Currently using bleaching trays * Eating disorders * Recent history of substance abuse * Smoking \>10 cigarettes/day * Participation in other clinical studies within 14 days of screening * Pregnancy

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Conditions

The condition(s) this trial relates to.

gingivitis periodontal disorder

As listed by the trial registrant

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

Gingivitis and periodontal diseases

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

  • SUNY Buffalo School of Dental Medicine

    RECRUITING

    Buffalo, New York, 14214, United States

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