Clear plastic expander could replace metal jaw widener for teens
NCT ID NCT07362160
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares a new clear plastic expander to the standard metal Hyrax expander for widening the upper jaw in 40 teens aged 10-14 with narrow jaws. The goal is to see if the clear device works as well for correcting crossbites and improving jaw width. Participants will be randomly assigned to one of the two expanders, and results will be measured using 3D scans and dental models.
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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 40 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2026
- Expected to finish
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Feb 2027
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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10 to 14 years
- 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.
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: 1. Patients' age at the start of treatment will range from 10-14 years. 2. Unstable unilateral or bilateral posterior crossbite due to maxillary constriction. 3. The first molars are fully erupted. 4. Good oral health free from caries and periodontal problems at the start of treatment. 5. Good general health. Exclusion Criteria: 1. Patients with obvious facial asymmetry. 2. Patients with orofacial cleft. 3. Patients with previous orthodontic treatment. 4. Patients with bad oral habits. 5. Patients with active periodontal disease.
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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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University of Baghdad/Collage of Dentistry
RECRUITINGBaghdad, Al-Rusafa, Bab Al-moadham, Iraq
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Other studies related to the condition(s) this trial covers.
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