A clinical and histopathological study of radicular cysts associated with primary molars.

Radicular cysts originating from primary teeth are considered rare. The study analyzed 49 primary molars with radiolucent lesions ranging from 4-15 mm in diameter. 73.5% of the lesions were diagnosed as radicular cysts, and 26.5% as granulomas. The lesions were more frequent in the mandible. All lesions were associated with severely decayed teeth and only 4 had previous pulp therapy. The present study and the survey of the literature suggest that radicular cysts associated with primary teeth are not rare.