A Case of Cleidocranial Dysplasia Treated by Le Fort I Osteotomy

Abstract

Cleidocranial dysplasia is a congenital anomaly that is clinically characterized by complete defect or hypoplasia of the clavicle and abnormal ossification of the skull. In the maxillofacial region, it has various abnormalities such as reversed occlusion with hypoplastic midface, persistence of deciduous teeth with delayed eruption of permanent teeth, supernumerary teeth and malalignment. Recently, a case of cleidocranial dysplasia in a 20-year-old female visited our clinic. Since 13 years-old, her remaining deciduous teeth and seven supernumerary teeth have been extracted, and she has undergone fenestraction of five permanent teeth, frontal traction and lateral expansion of the maxlilla in orthodontic therapy. After the preoperative orthodontic treatment, Le Fort I osteotomy for the hypogrowth of the maxilla was performed to advance it anteriorly. Her midface appearance and the occlusion were remarkably improved after the operation.