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Leaf Expander Versus Hyrax Expander in Mixed Dentition Patients With Posterior Crossbite.
Sponsor: Cairo University
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.
Official title: Evaluation of the Effects of the Leaf Expander Versus Hyrax Expander in Mixed Dentition Patients With Posterior Crossbite: A Randomized Clinical Trial.
Key Details
Gender
All
Age Range
6 Years - 12 Years
Study Type
INTERVENTIONAL
Enrollment
30
Start Date
2025-10-01
Completion Date
2027-03
Last Updated
2026-03-18
Healthy Volunteers
No
Conditions
Interventions
The Leaf expander
The Leaf expander incorporates Nickel Titanium springs that will not require the patients' home activation
Hyrax expander
Hyrax expander incorporates a screw that requires the patients' home activation
Locations (1)
Cairo University
Cairo, Egypt