Orthodontic Treatment Outcomes of Self Ligating System Compared to Clear Aligner System

This study is a multi-center, prospective, parallel-group randomized controlled trial designed to compare the orthodontic treatment outcomes of a passive self-ligating bracket system (Damon Ultima) versus a clear aligner system. The primary objective is to evaluate and compare the total orthodontic treatment duration between the two systems in patients with Angle Class I malocclusion and moderate crowding. Secondary objectives include assessing alignment efficiency, patient pain perception at multiple time intervals, dental arch dimension changes, root volume loss percentage, and overall treatment quality using the American Board of Orthodontics Objective Grading System (ABO-OGS).

NCT Number	NCT07638397
Lead Sponsor	University of Baghdad
Conditions	Angle Class I Maloclussion, Dental Crowding
Enrollment	42 participants
Start Date	2026-09-15
Primary Completion	2027-11-20 (estimated)
Study Completion	2028-08-20 (estimated)
Updated on ClinicalTrials.gov	2026-07-07