The radicular cyst is the most common odontogenic cyst. It originates from epithelial remnants of the periodontal ligament as a result of inflammation that is generally a consequence of pulp necrosis. The present report describes the management of a large radicular cyst of the mandible in a young patient. The treatment comprised endodontic treatment of the teeth involved followed by decompression. After 8 months of follow-up, this technique allowed rapid healing of the lesion as well as the beginning of ossification.
Decompression; Radicular cyst; traumatism.