Extensive complex odontoma in the maxillary sinus: An uncommon presentation as a cause of chronic sinusitis

Cyntia Carvalho, Diego Costa, Lélia Queiroz, José Amaral, Adriano Germano


Purpose: This study reports a case of a extensive odontoma causing maxillary sinusitis.
Case description: A 25-year-old man at clinical examination revealed discrete facial asymmetry and exposure of the lesion in the oral cavity. Imaging exams showed the presence of a well-defined radiopaque mass in the left maxilla, measuring approximately 7 cm and was intimately associated with the maxillary sinus and oral cavity. The mass was excised through an intraoral access under general anesthesia in the hospital and sent for histopathology, which was diagnosed as complex odontoma. The patient is under clinical follow-up and shows no signs of maxillary sinusitis and no oral sinus fistula.
Conclusion: The odontoma is a common injury in clinical dentistry, but in some aggressive cases may cause sequelae in the patient, thus, caution the dentist for proper diagnosis and treatment.


Complex odontoma; odontogenic tumour; maxillary sinus

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e-ISSN: 1980-6523

ISSN-L: 0102-9460


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