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Rivista di Chirurgia Maxillo-Facciale

Official Journal of the Italian Society of Maxillofacial Surgery




Italian Journal of Maxillofacial Surgery 2013 April;24(1):47-50

lingua: Inglese

Dentigerous cyst associated with an ectopic third molar in the maxillary sinus: case report

Matteini C. 1, Sciannameo V. 1, Di Curzio P. 2, Taglia C. 1

1 I Faculty of Surgery and Medicine, Policlinico Umberto I ”La Sapienza” University of Rome, Rome, Italy;
2 Department of MaxilloFacialSurgery Belcolle Hospital, Viterbo, Italy


Follicolar cysts are the most common dentigerous cysts, but multiple dentigerous cysts or dentigerous cysts located far away from the dental environment, are not common at all. In this paper we report a dentigerous cyst developed in maxillary sinus, a few similar cases are reported in scientific literature. Such cyst represented also a diagnostically challenge due to the fact that the cyst was situated high in the maxillary sinus involving the orbital floor and was misdiagnosed by standard panoramic radiograph. In our opinion the third molar have been displaced by progressively growing dentigerous cysts and the underlying bone was blow up by the cyst. In this case report a traditional Caldwell-Luc approach was preferred for these three reasons: distance of the tooth from maxillary ostium; size of the tooth; and mainly the presence of a bony wall all around the cyst. The bony wall refers to the pathogenesis of this cyst and this CT detail with histological features helped us to recognize the right among several etiologies.

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