RecruitingNot Applicable

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

Egypt30 participantsStarted 2025-10-01

Plain-language summary

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.

Who can participate

Age range6 Years – 12 Years

SexALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

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.

What they're measuring

Pain perception

Timeframe: first week after appliance insertion

Trial details

NCT IDNCT07301918

SponsorCairo University

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2027-03

View on ClinicalTrials.gov More Posterior Crossbite trials