Abstract
We report a case of an intranasal supernumerary tooth detected in a 6-year-8-month-old boy. The patient was suffering from recurrent bleeding and discharge from the right nasal cavity. An endoscopic inspection performed by a local physician found a crown-like whitish object in the right nostril, and he was referred to our department for diagnosis and treatment. Computed tomography of the nasal cavity showed a radiopaque mass resembling a tooth, which was incompletely covered by a sleeve of nasal mucosa on the floor of the right nasal cavity. Fully erupted primary dentition and no defects of permanent tooth germs were noted, findings consistent with a diagnosis of intranasal supernumerary tooth. In cooperation with otorhinolaryngologists in our hospital, the supernumerary tooth was excised from the base of the sleeve of nasal mucosa using endoscopic surgery. There was no bony socket. A histologic examination of the specimen showed a tooth structure consisting of enamel,dentin, cementum, and necrotic pulp tissue with an ordinary arrangement. Inflamed granulation tissue was also seen around the tooth. The postoperative course was satisfactory and there was no recurrence.
