Dentigerous cyst involving an inverted mesiodens-a rare report with unusual findings

Dentigerous cysts are developmental cysts of odontogenic origin, which surround the crown of unerupted teeth, odontomas, or supernumerary teeth. It is formed by the accumulation of fluid between the reduced enamel epithelium and the crown, with consequent expansion of the tooth follicle, and is characteristically attached to the cervical area of the tooth. Dentigerous cysts involving an inverted mesiodens is a rare occurrence with only few cases reported. The aim of this article is to report a case of a dentigerous cyst of the anterior maxilla involving an impacted and inverted mesiodens which is extremely rare and unusual.