<prompt> What erupts from unerupted tooth :Dental cystDentigerous cystBoth of the aboveNone of the above  <response>: Essentials for diagnosis of a Dentigerous cyst: Epithelial-lined, developmental, odontogenic cysts. Second most common type of jaw cyst associated with the crown of an impacted, unerupted, or developing tooth. Well-defined, radiolucent, sometimes expansile lesion. Usually slow growing and benign. Initially asymptomatic unless long-standing with significant enlargement or secondary infection. Usually discovered on routine dental X-rays. Requires histopathologic examination for diagnosis. Ref : Smith R.A. 2012. Chapter 25. Jaw Cysts. In A.K. Lalwani Ed, CURRENT Diagnosis Treatment in Otolaryngology--Head Neck Surgery, 3e. 