A RCT to Compare OHRQoL Outcome for SLB and CB

Inclusion Criteria: * malocclusion patients * age between 12 to 40 years * suitable for orthodontic treatment using either self-ligating brackets or conventional brackets. Exclusion Criteria: * Any surgery performed in the previous days, * Previous temporomandibular joint arthrotomies, * Fewer than 20 teeth total or fewer than 10 teeth in each arch, * Unstable residence or travel restrictions, * Periodontal disease judged to be severe by the surgeon, * Pregnancy, * Previous mandibular surgery, and * Inability to follow instructions or the study protocol.