Which jaw correction works best? study tests three methods in kids
NCT ID NCT07179354
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This study compared three treatments for children aged 9-12 with a forward lower jaw (Class III malocclusion): a face mask with expander, a mini maxillary protractor, and a chin cup with elastics. Fifty-five children were treated, and researchers measured changes in facial bones and soft tissues. The goal was to see which method best improves jaw alignment and facial appearance, helping doctors personalize treatment.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Rapid maxillary expansion with face mask, mini maxillary protractor, or modified splints with elastics and chin cup
- What this could lead to
- If this study provides clear results, it could help orthodontists choose the best treatment for each child to improve jaw alignment and facial appearance.
- What could go wrong
- This is a completed trial with only 55 children, so results may not apply to everyone. Different treatments work for different aspects, so no single method is a guaranteed fix.
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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55 people
The number who actually took part.
- Started
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Feb 2024
- Finished
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Mar 2025
- 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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9 to 12 months
- 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: * Individuals who have not completed their growth spurt (9-12 years old) * Overjet ≤ 0 mm (patients with negative overjet must be De Nevreze positive) * ANB ≤ 0°, Witts \< 1 * Good oral hygiene and healthy periodontal tissues * SN-GoGn angle between 26° and 38° * No congenital or acquired tooth loss (excluding third molars) * Body mass index (BMI) between 18-26 kg/m² * No systemic, local, or endocrinological diseases Exclusion Criteria: * Presence of any syndrome or developmental deformity * Previous orthodontic treatment * Allergy to any metal or acrylic * Presence of any systemic disease affecting treatment * SN-GoGn angle \> 38° * Presence of temporomandibular joint disorders
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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.
Contacts and locations
Locations
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Erciyes University, Faculty of Dentistry, Department of Orthodontics
Kayseri, 38039, Turkey (Türkiye)
More trials for these conditions
Other studies related to the condition(s) this trial covers.