Discussion of Dentigerous cyst
- Dentigerous (follicular) cyst is the most common type of noninflammatory odontogenic cyst.
- Most common cause of a pericoronal area of lucency associated with an impacted tooth.
- A dentigerous cyst forms within the lining of the dental follicle when fluid accumulates between the follicular epithelium and the crown of the developing or unerupted tooth.
- Most dentigerous cysts manifest in adolescents and young adults and often form around the crown of an unerupted mandibular third molar.
- Patients are typically pain free.
- The most important features of this cyst are its ability to expand asymptomatically and its potential to displace or resorb adjacent teeth or bone.
- Treatment includes extraction of the associated tooth and removal of the entire cyst.
 Imaging Findings for Dentigerous cyst
- At radiography, dentigerous cysts appear as well-defined, round or ovoid, corticated, lucent lesions around the crowns of unerupted teeth, usually third molars.
- The radiographic appearance of such dentigerous cysts is comparable with that of cystic, unilocular odontogenic keratocysts.
- Extremely large dentigerous cysts often develop undulating borders due to uneven rates of expansion through areas of varying bone density; the resulting radiographic appearance is comparable with that of a larger odontogenic keratocyst or ameloblastoma.
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 References for Dentigerous cyst
- Robert J. Scholl, Helen M. Kellett, David P. Neumann, and Alan G. Lurie. Cysts and Cystic Lesions of the Mandible: Clinical and Radiologic-Histopathologic Review. RadioGraphics 1999 19: 1107-1124.