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Clinical Comparison of Clear Aligners and Fixed Appliances in Dental Anterior Open Bite
Sponsor: Sana'a University
Summary
Dental anterior open bite is a challenging orthodontic condition with a high risk of relapse in adults. This randomized controlled clinical trial aims to compare the effectiveness and post-treatment stability of in-house clear aligners versus fixed orthodontic appliances in treating adult patients aged 18-30 years with dental anterior open bite (0 to -4 mm). A total of 46 eligible participants will be randomly allocated into two equal groups (23 treated with clear aligners and 23 with fixed appliances). Treatment outcomes, vertical dentoalveolar changes, and skeletal changes will be evaluated using digital intraoral scans, virtual model superimposition, and lateral cephalometric analysis. Following active treatment, an 8-month retention phase (bonded lingual retainer combined with a vacuum-formed retainer) and an 8-month post-retention follow-up phase will be implemented to comprehensively evaluate treatment stability and relapse tendency over a total observation period of 16 months.
Official title: Clinical Comparison of Clear Aligners and Fixed Orthodontic Appliances in the Treatment of Dental Anterior Open Bite in Adults: A Randomized Controlled Clinical Trial
Key Details
Gender
All
Age Range
18 Years - 30 Years
Study Type
INTERVENTIONAL
Enrollment
46
Start Date
2026-11
Completion Date
2029-07
Last Updated
2026-08-21
Healthy Volunteers
No
Conditions
Interventions
In-House Clear Aligners
Thermoplastic clear aligners (PETG 0.75-0.8 mm) manufactured in-house for vertical open bite closure, combined with composite attachments and intermaxillary elastics.
Fixed Orthodontic Appliances
Conventional 0.022-inch MBT prescription fixed brackets utilizing two-segment arch mechanics and intermaxillary vertical elastics.