Clinical and Radiographic Evaluation of Recurrent Odontogenic Keratocysts

ABSTRACT

PURPOSE: It is estimated that the odontogenic keratocyst (OKC) makes up 10% to 12% of all developmental odontogenic cysts. The lesion has been of particular interest because of its specific histopathologic feature, high recurrence rate, and aggressive behavior.MATERIALS AND METHODS: We investigated 266 OKCs of Korean patients for the sex of patient, the age of the patient, the location of OKC, the recurrence rate related to radiographic impression.RESULTS: The male-to-female ratio was 1.471, showing a slight male predilection. Odontogenic keratocysts had a peak of occurrence in the third decade of life. The mandibular angle and ascending ramus area (49.6%) is the most frequent site of OKCs in the jaws. Fourteen cases of unilocular (12%) and 5 cases of multilocular (20%) OKCs recurred. Thirteen cases of smooth (12.9%) and 6 cases of lobulated (14.6%) OKCs recurred. Seventeen cases of OKCs without perforation of cortical bone (12.5%) and 2 cases of OKCs with perforation of cortical bone (33.3%) recurred. Fifteen people of patients with single lesion (12.2%) and 4 people of patients with multiple lesions (66.7%) recurred.CONCLUSION: In this result, we consider multiple odontogenic keratocysts can recur more easily. So we have to treat them more carefully and need long-time follow-ups.