Jaw massage trick may help you open wider, study suggests
NCT ID NCT07670832
First seen Jun 27, 2026 · Last updated Jun 30, 2026 · Updated 2 times
Summary
This study tests whether a specific hands-on jaw technique (compression and decompression) can increase how wide people can open their mouths and improve jaw muscle tone and stiffness. Researchers will compare the technique to a gentle touch without any therapeutic intent. The study involves 32 healthy adults, with measurements taken right after the session and again one week later.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Osteopathic manual technique (jaw compression and decompression)
- What this could lead to
- If it works, this could point toward a simple, drug-free way to improve jaw mobility and muscle function.
- What could go wrong
- This is a very small, early study in healthy people, not patients. The technique may not have any meaningful effect, and results may not apply to people with jaw disorders.
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
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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
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About 32 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jun 2026
An estimate. Start dates often move.
- Expected to finish
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Sep 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Asymptomatic adults that signed the informed consent * Functional dentition * Preserved masticatory function Exclusion Criteria: * Diagnosis of inflammatory systemic disorders * Diagnosis of cardiovascular disorders * Diagnosis of respiratory disorders * Diagnosis of central nervous system disorders * Diagnosis of rheumatic disorders * Visual disturbance affecting balance or proprioception
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Escola Superior de Saúde (E2S)
Porto, 4200-072, Portugal
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