Ectopic teeth in the maxillary sinus

Abstract

Dental ectopia is a rare developing anomaly characterized by a change in the normal eruption pathway of a deciduous, permanent or supernumerary tooth. In some cases, ectopic teeth are present in the non-dentate area like maxillary sinus. The article presents cone beam computed tomography data of 7 asymptomatic patients with teeth totally or partially located inside the maxillary sinus. Dentigerous cysts and odontomas can cause displacement of impacted teeth into ectopic positions.