Association of Dentigerous Cyst with Impacted Third Molar

A dentigerous cyst is an odontogenic cyst that develops around the crown of an impacted or unerupted tooth. Unless infected, such a cyst is initially asymptomatic and can be detected only through routine radiographic examination. A 20 years old female patient reported to our clinic with chief complaint of swelling on the lower left side of her face which was present since 3 months. Slight tenderness was noticed on percussion with first and second molar and grade II mobility on left second molar. Radiographically, a dentigerous cyst should always be differentiated from a normal dental fol- licle. Dentigerous cysts are the most common cysts with this radiographic appearance. Radiographically, the cyst appears unilocular with well defined margins and often sclerotic borders but sometimes it may be multilocular in appearance and may also have a continuous cystic membrane.