Abstract:

Backround: Odontogenic keratocyst is the most aggressive cyst that develops from dental lamina remnants. It recurrence and infiltrate to tissues. Dentigerous cyst is the second most common cyst and often does not cause symptoms. In this case report, marsupialization of these two cysts with large settlement is presented.  Case Report: In both cases, after clinical and radiological examination, a large radiolucent lesion was determined at the mandibula, without pain, intraoral and extraoral expansions. Under local anesthesia, full thickness flap was raised and the cavity was opened in the bone. The cyst fluid was evacuated. Then, the gas iodoform sutured to maintain cavity gap.  Conclusions: Odontogenic keratocyst and dentigerous cyst are mostly lesions have seen in the posterior region of the mandible and reaching large sizes. Enucleation and marsupialisation can be performed according to the size of the lesion in treatment. Patients should be followed for a long time with postoperative histopathological examination. Keywords: Keratocyst, dentigerous cyst, marsupialization

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