Den här översättningen är inte klar ännu. Den här sidan är just nu på engelska.

Gå till den engelska sidan

Cure My Disease

Don't miss your cure!

 Log in / Sign up

Jaw surgery may fix more than your Smile—Could it improve speech?

NCT ID NCT04117360

Knowledge-focused Sponsor: University of North Carolina, Chapel Hill 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This study looks at how jaw surgery affects speech in people with bite problems like open bite or underbite. Researchers will record patients' speech and tongue movements before and after surgery to see what changes. The goal is to understand why many jaw surgery patients have speech issues and how surgery might help.

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 could help speech therapists better understand and treat speech problems in people with jaw misalignment.
What could go wrong
This is an observational study, not testing a treatment. It may not lead to direct improvements for 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 180 people

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

Started

Sep 2019

Expected to finish

Mar 2028

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

The study population includes healthy patients who present in our oral surgery and/or orthodontic dentofacial disharmony clinics with skeletal underbites, open bites, and/or excessive overjet. These patients have decided (prior to our study) to pursue orthodontic treatment combined with orthognathic surgery to address their jaw disproportions.

Ages

15 to 40 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: * Jaw surgery patient at UNC with a skeletal open bite, underbite or overjet greater than 5mm. * Age 15-40 years Exclusion Criteria: * Hearing loss * Learned English as a second language * Significant regional accent, as characterized by a speech pathologist * Developmental delay, performing several grade levels below age bracket * history of craniofacial disorder * genetic syndrome associated with known craniofacial presentation * history of craniofacial trauma * history of prior craniofacial surgery (excluding extractions and dental procedures) * Jaw surgery without fixed orthodontic appliances

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Dentofacial abnormalities are added.

Vår säkerhetsrekommendation!

Genom att skicka in godkänner du våra Användarvillkor

Conditions

The condition(s) this trial relates to.

Dentofacial Deformities Malocclusion speech disorder Speech Sound Disorder speech-sound disorder

As listed by the trial registrant

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

Dentofacial abnormalities Dentofacial anomalies, including malocclusion Dentofacial deformities Dentofacial disharmony Malocclusion Malocclusion in children Skeletal malformation Skeletal malocclusion Speech disorders Speech sound disorder

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

  • University of North Carolina

    RECRUITING

    Chapel Hill, North Carolina, 27514, United States

More trials for these conditions

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