Clinical Trial

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

Recruiting
View on ClinicalTrials.gov →
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.
Protocol Amendment History 2 amendments
This ClinicalTrials.gov record has been amended 2 times since 2025-12-23; most recent amendment 2026-06-03.
Status change: Not Yet Recruiting → Recruiting 2026-03-16
Trial Details
NCT Number NCT07301918
Lead Sponsor Cairo University
Conditions Posterior Crossbite, Maxilla; Hypoplasia
Enrollment 30 participants
Start Date 2025-10-01
Primary Completion 2027-03 (estimated)
Study Completion 2027-03 (estimated)
Updated on ClinicalTrials.gov 2026-06-04