Tag Archives: radiation therapy

Radiation Therapy and Dentistry (Part 2)


What is osteoradionecrosis?

Osteoradionecrosis is an irradiated bone (undergo radiotherapy) that becomes devitalized(dead) and exposed through the overlying skin or mucosa, without healing for 3 months. It is more common in mandible (your lower jaw) compared to your maxilla (the upper jaw)  due to its compact structure and it receives less blood supply compared to the maxilla. Continue reading


Osteoradionecrosis (ORN) is a condition of nonvital bone in a site of radiation injury. ORN can be spontaneous, but it most commonly results from tissue injury. The absence of reserve reparative capacity is a result of the prior radiation injury. Even apparently innocuous forms of trauma such as denture-related injury, ulcers, or tooth extraction can overwhelm the reparative capacity of the radiation-injured bone. Continue reading