DOI: 10.36347/sjmcr.2020.v08i04.008

Pages: 450-452

Dentigerous cyst is the most commonly occurring odontogenic cyst after a radicular cyst and accounts for 15% of all true cysts in the jaws. The cyst is more common in mandible than in the maxilla. The dentigerous cyst is commonly associated with impacted mandibular third molars. In the maxilla, the incidence is rare. Dentigerous cyst in the maxillary sinus in association with an impacted third molar is an uncommon entity. We present a case of dentigerous cyst associated with an impacted third molar, obliterating the maxillary sinus leading to nasal obstruction and impaired hearing in a 37-year-old male.