KERITINIZING DENTIGEROUS CYST : A RARE ENTITY

Abstract

Dentigerous cyst is the most common of all odontogenic cysts and constitutes over 33% of all cases of jaw cysts. The mandibular third molar region is the most (77%) common site of dentigerous cyst [1]. However, keratinizing dentigerous cyst is very rare and to the best of our knowledge has been reported only thrice in literature[2,3,4]. We report the fourth case of keratinizing dentigerous cyst. The patient presented with a complain of long standing severe trismus with 8 mm mouth opening due to masseter muscle spasm caused by recurrent infections of dentigerous cyst. The enucleation of cyst with release of masseter muscle was planned. Mouth opening showed significant improvement post operatively. The histopathological examination revealed an unusual variant of odontogenic cyst, keratinizing dentigerous cyst arising from mandibular third molar.