Pericoronal radiolucency associated with incomplete crown
A 7-year-old female patient was referred from a private dental clinic to evaluate a pericoronal radiolucency at the right lower molar region. On clinical examination, there was no sign of swelling or infection. A panoramic radiograph revealed a well-defined round unilocular radiolucency touching the developing crown of the right lower second molar, which was displaced downwardly. The cemento-enamel junction of the involved tooth was incomplete (). The CBCT images showed bucco-lingually expanded cortical plates associated with the lesion and a mandibular canal displaced toward the inferior cortex (). A provisional diagnosis of odontogenic keratocyst was made, and the lesion was excised but the tooth was preserved. The histopathological diagnosis proved to be an odontogenic keratocyst. The 6-month follow-up panoramic radiograph showed uneventful healing of the lesion with upward movement of the more developed lower right second molar ().