Abstract
A supernumerary tooth in the nasal cavity was first reported in Japan by Kanasugi in 1901. Since then, approximately 130 cases have been reported in Japan. A white foreign body was found in the right nasal cavity of a 5-year-old boy at an otorhinolaryngological clinic. On radiological examination, we found a tooth that had a dentinoenamel layer. It was diagnosed an impacted supernumerary tooth. Under general anesthesia the impacted supernumerary tooth, which appeared to be a canine tooth was extracted.
