Introduction: Odontogenic keratocyst is a cyst of developmental epithelial origin and constitutes 11% of jaw cysts. It is more common in the ramus and angulus regions of the mandible and is a benign but aggressive intraosseous pathology of the jaw. Swelling and pain are the most common clinical findings. Due to its ability to progress and grow rapidly, its potential to spread to neighboring tissues is quite high. Case: A 13-year-old female patient applied to our clinic with the complaint of pain in the posterior region of the lower jaw. In radiographic examination; An incisional biopsy was performed on the patient, who had a radiolucent lesion expanding towards the ramus associated with the impacted third molar tooth. As a result of the biopsy, the mass was diagnosed as chronic inflammatory-fibrotic stroma. Under local anesthesia, the wisdom tooth was extracted and the mass was enucleated. The patient was prescribed antibiotics, analgesics and mouthwash, and other supportive treatments were administered. Histopathological evaluation after total enucleation revealed that it was a keratocyst. No recurrence was observed in the patient's 6-month post-operative follow-up. Conclusion: Odontogenic keratocyst is usually asymptomatic and can reach large sizes. Due to the high recurrence rate among treatment options, radical curettage around the lesion is required. In the presented case, satisfactory results were obtained with enucleation. Keywords: enucleation, impacted molar tooth, odontogenic keratocyst