The upper airway volume effects produced by Hyrax, Hybrid-Hyrax, and Keles keyless expanders: a single-centre randomized controlled trial

ConclusionsRME resulted in relatively small increases in total upper airway volume and its separate compartments, with mostly no statistically significant differences across the Hyrax, Hybrid-Hyrax, and Keles groups.LimitationsSignificantly greater attrition was found in the Keles group due to appliance failure. The current trial might possibly be under-powered to detect differences between groups, if such exist.HarmsKeles expanders blocked during activations and required substitution for completion of treatment.ProtocolThe protocol was not published before trial commencement.RegistrationAustralian and New Zealand Clinical Trial Registry (ACTRN12617001136392).
Source: The European Journal of Orthodontics - Category: Dentistry Source Type: research