ABSTRACT
@#Dentigerous cyst is the most common odontogenic development cyst. If the cyst reaches a large size (>2 cm in diameter), swelling, mild sensitivity, tooth mobility, and displacement may be observed. The classic treatment for dentigerous cysts is enucleation and extraction of the involved tooth. This case report presents follicular cyst of unerupted permanent tooth. Case Report: 11-year-old girl, radiographic examination showed a radiolucent area from the mandibular right first premolar to mandibular deciduous second molar. Intraorally there was expansion of the buccal cortex to 85, 44th tooth. The mucosa over the expansion was normal. On palpation was no tender. Due to the age of the patient and cyst size, enucleation of the lesion is decided. Under local anesthesia following strict aseptic conditions, a full thickness mucoperiosteal flap was raised, an ostectomy on the crestal bone was performed. The cyst was enucleated along with extraction of mandibular deciduous second molar. The flaps were placed in its original position and sutured. Cyst was sent for histopathological examination. The follow-up was performed periodically under radiographic examinations during 8 months and it was observed successful regeneration of bone.