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Clear Orthodontic Expander Versus Hyrax
Sponsor: University of Baghdad
Summary
This study will be conducted to evaluate the effectiveness of a clear expander fabricated from 2-mm biocompatible polyethylene terephthalate glycol (PETG) thermoforming material integrated with an expansion screw in achieving dental and skeletal expansion in adolescent patients, compared with the conventional Hyrax expander.
Official title: Evaluating the Clinical Performance of a Novel Clear Orthodontic Expander Versus Hyrax: A Randomized Clinical Trial
Key Details
Gender
All
Age Range
10 Years - 14 Years
Study Type
INTERVENTIONAL
Enrollment
40
Start Date
2026-02-01
Completion Date
2027-02-01
Last Updated
2026-02-19
Healthy Volunteers
Yes
Conditions
Interventions
New clear expander
All patients with a clear expander will be instructed to wear the appliance 24 hours a day, except during eating and cleaning. The expander will be activated twice daily (0.2 mm per turn). Patients will be provided with an instruction brochure and advised to use a reminder to ensure compliance. The expansion will continue until the desired amount of the maxillary arch expansion occurs when the maxillary first molars' palatal cusps occlude the lingual side of the mandibular first molar buccal cusps to overcome the expected relapse due to the elasticity of the palatal soft tissue.
Hyrax expander
The activation protocol for the Hyrax expander will be the same in all patients, twice daily (0.2 mm per turn). The expansion will continue until the desired amount of the maxillary arch expansion occurs when the maxillary first molars' palatal cusps occlude the lingual side of the mandibular first molar buccal cusps to overcome the expected relapse due to the elasticity of the palatal soft tissue.
Locations (1)
University of Baghdad/Collage of Dentistry
Baghdad, Al-Rusafa, Bab Al-moadham, Iraq