Clinical impact of ectopic teeth in the maxillary sinus

Objective To evaluate the clinical features, aetiologic factors, challenging properties (such as radio opacity in Waterʹs view in a patient with no sinusitis), signs and symptoms of the ectopic teeth in the maxillary sinus. Study design Clinical symptoms and radiographic findings of 14 patients with ectopic teeth in the maxillary sinus were evaluated. Computed tomography (CT) and conventional radiographic images of maxillary sinus and clinical findings were compared with each other with regard to the final diagnosis. Results Waterʹs view is inadequate to diagnose ectopic tooth in the maxillary sinus in some cases. Panoramic radiographs may be preferred before CT to evaluate the ectopic tooth in the maxillary sinus as structure of a tooth can be clearly detected on panoramic radiographs. Crowding was the most common aetiologic factor among the 14 cases. Conclusion and significance The patients with ectopic tooth in the maxillary sinus should be evaluated thoroughly by complete otorhinolaryngologic, intraoral examinations and proper diagnostic imaging procedures in order to avoid misdiagnosis of maxillary sinusitis. As the opacity of the maxillary sinus in Waterʹs view due to ectopic tooth can be misinterpreted as maxillary sinusitis, patients who have sinusitis-like complaints and opacity of maxillary sinus in Waterʹs view who are resistant to medical treatment should be evaluated with respect to the presence of ectopic tooth.