The treatment of mandibular cysts associated with osteogenesis imperfecta.

A fifteen-year-old boy with osteogenesis imperfecta (OI) and dentinogenesis imperfecta also had a big cyst in the mandible and needed surgical therapy. Six months postoperatively we saw a complete regeneration of the bone-structures. We came to the conclusion that cysts which appear independently from the disease of OI can heal after surgical intervention.