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New study links airway size to nighttime teeth grinding

NCT ID NCT07511946

Knowledge-focused Sponsor: Wroclaw Medical 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 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jul 23, 2026 · Updated 3 times

Summary

This study looks at how the size of the upper airway might influence teeth grinding (bruxism) during sleep in people with obstructive sleep apnea. Researchers will use safe, low-radiation 3D scans and sleep tests to measure airway volume and bruxism in 80 adults. The goal is to better understand the connection between these conditions, which could improve future care for sleep-related grinding.

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 help doctors better understand and manage teeth grinding linked to sleep apnea.
What could go wrong
This is an observational study that does not test a treatment, so it will not directly improve symptoms. Results may not apply to everyone with sleep apnea or bruxism.

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 80 people

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

Expected to start

Sep 2026

An estimate. Start dates often move.

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.

Who is studied

A total of 80 adult volunteers will be recruited for the research project, divided into two groups of 40 each, comprising both sexes, who will give their voluntary and informed consent to participate in the study. The study group will consist of patients with sleep bruxism and obstructive sleep apnoea. The control group will consist of patients with sleep bruxism without obstructive sleep apnoea. Participants are arbitrarily selected from a population.

Ages

18 years and older

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: * age equal to/greater than 18 years * moderate or high risk of sleep apnea according to the STOP-Bang questionnaire * presence of bruxism symptoms in the oral cavity according to the current international consensus on bruxism * positive history of bruxism during sleep Exclusion Criteria: * refusal to participate in the study * pregnancy * breastfeeding * presence of severe mental illness * alcohol and/or drug addiction * taking medications that affect the neuromuscular and/or respiratory systems * severe systemic diseases such as cancer * severe neurological and autoimmune diseases * multiple missing teeth * edentulism in the upper and/or lower jaw

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Conditions

The condition(s) this trial relates to.

bruxism obstructive sleep apnea syndrome parasomnia, sleep bruxism type sleep apnea syndrome Sleep Bruxism upper respiratory tract disorder

As listed by the trial registrant

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

Bruxism, sleep-related Sleep apnea syndrome, obstructive Upper respiratory tract illness

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

  • Uniwersyteckie Centrum Stomatologiczne

    Wroclaw, Dolny Śląsk, 50-425, Poland

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