Epulis is generally classified histopathologically into several subtypes, e. g. epulis fibrosa, epulis granulomatosa, epulis fibromatosa, etc. among them epulis fibrosa and epulis granulomatosa are common in Japan, while epulis with a formation of hard tissue is relatively rare. A case of epulis fibro-osteomatosa cementoplastica is reported.
The patient was a 32-year-old female who had noticed a small lump on the gingiva in the left mandibular molar region. Clinical examination revealed a mass of the thumb tip in size in the region between teeth numbered 35 and 37. Radiographic examination showed i cloudy irregular radioopacity in the mass region. The lesion was diagnosed clinically as epulis osteoplastica, and surgical operation was carried out under local anesthesia. On gross examination, the mass was mesured 19 × 13 × 11.5 mm and the/cross section showed a firm milky white mass with scattered areas of hard bony tissue. Histopathological examination was performed and the lesion was diagnosed as epulis fibro-osteomatosa cementoplastica.
The postoperative course was uneventful and there is no evidence of recurrence after 6 years.
