Solitary Median Maxillary Central Incisor를 가진 II급 부정교합 치험례

Treatment of Class II Malocclusion with Solitary Median Maxillary Central Incisor: A Case Report

Solitary median maxillary central incisor (SMMCI) is a rare congenital anomaly characterized by the absence of one of the maxillary central incisors, with the remaining incisor positioned centrally in the midline. While SMMCI can manifest independently, it can also be associated with holoprosencephaly, a condition resulting from incomplete or failed separation of the cerebral hemispheres. A 14.9-year-old female patient presented with a congenital absence of one maxillary central incisor and an anterior overjet of 14.3 mm. She was diagnosed with Class II division 1 malocclusion with SMMCI. The treatment approach included the extraction of the SMMCI and orthodontic treatment using the fixed orthodontic appliances. Following the orthodontic treatment, there was a notable enhancement in anterior occlusion and aesthetics, with proper space distribution for restorative procedures in the maxillary anterior region.