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Leaf Expander Versus Hyrax Expander in Mixed Dentition Patients With Posterior Crossbite.

RecruitingNAAges 6 Years - 12 YearsAllCairo University
NCT07301918 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

Design: Two-arm parallel randomized clinical trial in mixed dentition (6-12 years). Arms: (1) 9 mm, 900 g leaf expander; (2) 9 mm Hyrax expander. Follow-up: From appliance insertion → completion of intended expansion → 6-month retention. Primary outcome: Pain perception during the first 7 days post-insertion (daily patient-reported scale). Secondary outcomes: Skeletal and dental changes on CBCT.

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📋 Eligibility rules (as published)
Inclusion Criteria: * Male and female patients * Mixed dentition stage * Unilateral or bilateral posterior crossbite. * Patients in prepubertal stage with cervical vertebral maturation stage 1-3. * Fully erupted maxillary and mandibular permanent first molars. * Skeletal class I or II. Exclusion Criteria: * Previous orthodontic treatment. * Missing teeth. * Inadequate oral hygiene. * Patients with bad oral habits. * Patients with medical conditions. * Patients with cleft lip and palate.
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What it tests

  • The Leaf expander
  • Hyrax expander
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Where

1 site
Cairo University
Cairo, Egypt
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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