Adenomatoid odontogenic tumor arising from dentigerous cyst: Report of a rare case

Adenomatoid odontogenic tumor (AOT) was described as a distinct odontogenic tumor by Stafne in 1948. It is the fourth most common odontogenic tumor which is benign, slowly growing and has three variants, follicular, extrafollicular, and peripheral. A follicular variety of AOT will be associated with an impacted tooth and most commonly gets confused with the dentigerous cyst. It is known fact that odontogenic cysts can be associated with odontogenic tumors. There are very few case reports of AOT arising within the dentigerous cyst. It's difficult to assess the behavior or treatment modifications for such type of lesions as the reported cases are less. They are treated conservatively by curettage and enucleation as both are benign in nature. Here, we report a case of AOT arising from the dentigerous cyst with an impacted canine in the anterior maxilla in a 14-year-old boy with emphasis placed on clinical, radiographic, and histological features in addition to its surgical management.