Key Facts Osteoradionecrosis (ORN) is a severe bone disease that arises as a side effect of radiation therapy primarily used to treat head and neck cancers ORN primarily affects the jaw, especially the mandible It is one of the most severe complications of radiation therapy High doses of radiation can compromise the bone’s blood supply, leading to necrosis Adequate dental care before radiation therapy and avoiding trauma to irradiated areas can reduce the risk Depending on severity, treatments can range from medication and hyperbaric oxygen therapy to surgical interventions What is Osteoradionecrosis? Osteoradionecrosis, often abbreviated as ORN, is a condition where bone starts to deteriorate and die after radiation therapy.…