Self-Ligating Brackets, Friction Reduction, Treatment Acceleration, and Patient-Centered Outcomes: A Review

Self-ligating brackets (SLBs) have emerged as an important innovation in contemporary orthodontics, offering the potential to minimize frictional resistance, improve biomechanical efficiency, and enhance patient-centered treatment outcomes. Unlike conventional brackets, which rely on elastomeric or metallic ligatures to engage the archwire, SLBs incorporate an inbuilt locking mechanism that permits freer wire movement and reduced binding during sliding mechanics. This narrative review examines the biomechanical principles, clinical efficacy, and future potential of SLB systems. Evidence supports several advantages, including reduced friction, improved alignment efficiency, shortened chairside time, better oral hygiene maintenance, and improved patient comfort. Reduced frictional resistance may also allow the use of lighter, more physiologic orthodontic forces, thereby promoting favorable periodontal responses. Despite strong in vitro evidence of improved mechanical performance, clinical trials and systematic reviews have reported mixed results regarding reductions in total treatment time and long-term superiority over conventional systems. The growing integration of digital orthodontics, AI, and personalized appliance technologies holds promise for further enhancing the clinical utility of SLBs. Large-scale randomized controlled trials with standardized methodology remain necessary to establish definitive conclusions on long-term efficacy.