Although odontoma is the most common odontogenic tumor, it seldom occurs in the maxillary sinus. We report a case of complex odontoma arising in the maxillary sinus.
A 29-year-old man was referred to our department on September 20, 1994 for further evaluation of the right side of the maxilla. He had previously consulted a dental clinic for treatment in August 1994. Radiographic examination showed a radiopaque mass in the right side of the maxilla. There were no symptoms or abnormal clinical findings in either the oral cavity or the face. A computed tomographic scan displayed a high-density mass with an irregular outline in the right sinus. From these findings, the maxillary lesion was clinically diagnosed as a benign tumor (osteoma or odontoma). The lesion was enucleated under general anesthesia on February 14, 1995. The resected tumor was 40×38×30mm, grayish white, and bony hard. The histopathological diagnosis was a complex odontoma. He had no signs of recurrence sa of 2 years after surgery.
