Osteopetrosis was first reported by Albers-Schonberg in 1974. This disease is characterized by failure of the primary spongiosa for some reason and extraordinary thickness and density of the cortical portion of the osseous system.
We experienced a case of osteopetrosis compricated with osteomyelitis of a jaws. Patients was 60 year-old man, he had foiled periodontitis apicalis and had teeth extracted about 3 years ago. The patient was successfully treated by removal of sequester by covering the raw surf ace bone with periosteum sufficiently under antibiotic therapy.