Radicular cysts are the most common inflammatory odontogenic cysts, typically resulting from pulpal necrosis and chronic periapical inflammation. This case report highlights a rare presentation of an extensive mandibular radicular cyst in a 39-year-old female, discovered incidentally during orthodontic treatment. CBCT revealed a large unilocular radiolucency with inferior displacement of the inferior alveolar nerve canal. Histopathological examination confirmed the diagnosis of a radicular cyst. The case emphasizes the importance of CBCT in assessing lesion extent and the necessity of histopathology for definitive diagnosis.
Keywords: Radicular cysts, Odontogenic cysts, Inferior alveolar nerve.