Narrow jaw study uses 3D scans to see how expansion changes face and sinus
NCT ID NCT07326345
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how different ways of widening a narrow upper jaw affect nearby facial structures like the sinuses and tear ducts. It involves 30 people aged 15 and older who have a crossbite. Researchers will use 3D scans to measure changes in volume and shape before and after treatment.
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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 30 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Sep 2025
- Expected to finish
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May 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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15 years and older
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Diagnosis of maxillary transverse deficiency. * Patients aged 15 years and older. * Presence of unilateral or bilateral crossbite. Exclusion Criteria: * Severe facial deformities or craniofacial syndromes. * History of previous orthodontic treatment. * Existing pathology or history of surgery related to the paranasal sinuses, nasolacrimal system, or orbital cavity. * Inadequate patient cooperation. * History of trauma, or previous maxillofacial/plastic surgery procedures. * Clinical signs or symptoms of maxillary sinus pathology (e.g., maxillary sinus cysts, sinusitis).
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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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Bezmialem Vakif University Faculty of Dentistry, Department of Orthodontics
RECRUITINGIstanbul, Fatih, 34093, Turkey (Türkiye)
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