Abstract: This case report systematically documents the examination, diagnosis, and treatment of an adult patient presenting with skeletal Class Ⅲ malocclusion accompanied by posterior crossbite. To address the three-dimensional skeletal and dental discrepancies, in accordance with the patient's chief complaints, a sequential treatment approach was adopted involving micro-implant-assisted maxillary expansion, micro-implant-assisted mandibular dentition distalization, and straight-wire appliance technique. Post-treatment evaluation revealed significant improvements in dental alignment, occlusal relationship, facial profile, and periodontal health.

Key words: skeletal Class Ⅲ malocclusion, camouflage orthodontic treatment, micro-implant anchorage