Abstract
In general dental practice, an impacted supernumerary tooth is frequently observed. Its frequency of occurrence is highest in the maxillary anterior region, followed by the maxillary molar and mandibular premolar regions. Recently, cone beam CT (CBCT), which enables identification of the 3D details of impacted supernumerary teeth, has been applied for evaluation in addition to intra-oral radiography and panoramic radiography.
We experienced a case of ectopic eruption of an impacted tooth in the right nasal cavity, which is rare in comparison with common impacted supernumerary teeth in the jaw. In this case report, we examined panoramic radiography and CBCT images of the impacted tooth, and compared the case with several cases reported in previous studies.
