Evaluation of the alignment efficiency of conventional, superelastic and heat activated copper nickel titanium archwires in the initial phase of fixed orthodontic treatment over a 16 week period A single center double blind randomised controlled clinical study

This clinical study is a single-center, double-blind, randomized controlled clinical trial designed to compare the alignment efficiency of conventional NiTi, superelastic NiTi, and heat-activated copper NiTi archwires during the initial phase of fixed orthodontic treatment. Seventy-eight patients with moderate to severe mandibular anterior crowding will be randomly allocated into three equal groups and followed for 16 weeks. Alignment will be evaluated primarily using Little’s Irregularity Index at monthly intervals, with secondary outcomes including arch dimensional changes,lower incisor inclinations, pain perception, and root resorption.