Huge Inflammatory Dentigerous Cyst: Case Report

Dentigerous cyst could be defined as an odontogenic cyst that envelops the crown of an unerupted tooth, caused due to accumulation of fluid between the reduced enamel epithelium and the enamel surface. This cyst is the most common odontogenic cyst of development origin comprising 20% of all jaw cysts. Most dentigerous cysts occur in the second to third decades of life with a slight male predilection. This case report presents a case of large dentigerous cyst in a 13-year-old female. The lesion was liquid with thin border and there are three unerupted teeth extended to the whole right maxillary sinus. All the soft and hard tissues have a normal appearance with an obvious swelling and easily palpated in the upper right vestibular area. Large dentigerous cysts are uncommon, and such lesions associated with an unerupted tooth may be odontogenic tumors like Keratocystic odontogenic tumors or unilocular ameloblastomas. Hence it is important that a diagnosis is not made on a radiographic evidence alone.