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Quad Helix vs RME for Posterior Cross-bite in Egyptian Children

Al-Azhar University · 2026
ClinicalTrials.gov · Datasets · License: Public Domain · 2026
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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.
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