Dentigerous cyst is the most prevalent type of odontogenic cyst and is associated with crown of an unerupted or developing tooth, and it accounts for more than 24% of cysts involving jaw. It usually develops around crown of mandibular third molar, maxillary canine, followed by mandibular premolars, but it rarely involves supernumerary teeth and central incisors. Dentigerous cyst is rarely associated with supernumerary tooth and mesiodens. The usual age of clinical presentation of dentigerous cyst due to supernumerary tooth is during the first four decades of life. The present case report describes about the dentigerous cyst involving the mesiodens and its surgical management in 11 year old child.

Key words: Dentigerous cyst; Supernumerary teeth; Mesiodens; Enucleation.