Clinical and Radiographic Evaluation of Recurrent Odontogenic Keratocysts

Jo, Hyung Woo; Choi, So Young; Kim, Hyun Soo; Kwon, Tae Geon; Jang, Hyun Jung; Lee, Sang Han; Kim, Chin Soo

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 1.47:1, 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.