Orthodontic Management of a Class I malocclusion with Severe Crowding: A Case Report

This case report describes the successful orthodontic management of a 16-year-old Malay female patient presenting with a Class III incisor relationship on a Class I skeletal base with severe crowding in both maxillary and mandibular arches. Treatment involved the extraction of all first premolars, followed by fixed orthodontic therapy using a pre-adjusted edgewise appliance (MBT prescription). The objectives were to correct anterior and posterior crossbites, achieve an optimal occlusion, and improve facial aesthetics. The treatment duration was 17 months, culminating in a well-aligned dentition with stable occlusion. Post-treatment assessment revealed significant cephalometric and occlusal improvements with no evidence of root resorption or enamel decalcification.