Fig. 1

Initial orthopantomogram (OPT) at the age of 11 years showing the extended pericoronar osteolyses of the teeth 33 and 45 which were retained at the base of the mandible. The adjacent teeth (32, 34, 44) seem to be dislocated by the cystic lesions. In the area between teeth 46 and 47, a diffuse osteolysis confluent with a peri-coronar osteolysis around the retained 47 is obvious. Furthermore, root resorptions at the teeth 73 and 85 are visible