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Can losing weight save your teeth? new study investigates

NCT ID NCT04602572

Knowledge-focused Sponsor: University of Bergen 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 1 time

Summary

This study follows 400 obese adults in Norway to see how weight loss from lifestyle changes, medication, or surgery affects their oral health. Researchers will measure gum disease, cavities, and tooth erosion before and after weight loss. The goal is to understand the link between obesity and oral diseases.

What this could mean

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

What this could lead to
If successful, this study could clarify how obesity contributes to gum disease and tooth decay, and show whether weight loss improves oral health.
What could go wrong
This is an observational study, not a treatment trial. It will not test a new drug or cure, and results may not apply to all obese patients.

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.

Participants

About 400 people

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

Expected to start

Nov 2026

An estimate. Start dates often move.

Expected to finish

Dec 2027

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.

Who is studied

Obese adults referred to the Obesity Centre from primary, secondary, and tertiary health services.

Ages

20 to 70 years

Sex

Anyone

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: * Obese adult patients. * Patients referred to the Obesity Clinic at the Hospital. Exclusion Criteria: * Unwillingness to participate.

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Conditions

The condition(s) this trial relates to.

dental caries mouth disorder Obesity obesity disorder Overweight periodontitis tooth erosion, non-bacterial

As listed by the trial registrant

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

Dental caries Dental erosion Obesity Oral diseases Periodontitis

How to take part

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

  1. 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 ↗

  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.

More trials for these conditions

Other studies related to the condition(s) this trial covers.