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Quad Helix vs RME for Posterior Cross-bite in Egyptian Children
Sponsor: Al-Azhar University
Summary
This randomized clinical trial aims to evaluate and compare the effectiveness of the Quad Helix (QH) appliance versus Rapid Maxillary Expanders (RME) in treating posterior cross-bite in Egyptian children during the mixed dentition stage. The study will also assess patient comfort and pain levels associated with each appliance.
Official title: Quad Helix Versus Rapid Maxillary Expanders in the Treatment of Posterior Cross-bite During Mixed Dentition in a Sample of Egyptian Children: A Randomized Clinical Study.
Key Details
Gender
All
Age Range
9 Years - 12 Years
Study Type
INTERVENTIONAL
Enrollment
20
Start Date
2026-03-30
Completion Date
2028-03-31
Last Updated
2026-03-30
Healthy Volunteers
No
Interventions
Quad Helix(QH) Appliance
It is a fixed orthodontic appliance fabricated using stainless-steel wire and soldered to bands on upper first permanent molars.
Rapid Maxillary Expanders
It is a fixed expansion device bonded on the upper first permanent molars and pre-molars. Activation is done at a rate of 0.25 mm twice daily (two turns per day)
Locations (1)
Faculty of Dental medicine (boys) ,Cairo,Al-Azhar University
Cairo, Cairo Governorate, Egypt