A case of simple bone cyst in a 11 year old girl is presented. Radiographically, there was a well defined multiocular radiolucency, which was extended from TI apical region to the mesial region of 8 1 toothgerm.
Really, the lesion had multiocular structure accompanying multiple lesions. Although the etiology of simple bone cyst is unknown, bleeding from the surroundings of A. alveolaris inferior at infancy was suggested as a cause of this disease.
