Multiple choice

Incidence of osteoradionecrosis is increased in the following cases __________.

  1. extraction following radiotherapy

  2. leukemic patients

  3. patients on hyperbaric oxygen therapy

  4. xerostomia
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A Correct answer
Explanation

Following radiotherapy, there are changes seen in the area that has undergone radiation. This is characterized by three Hs: hypocellularity, hypovascularity and hypoxia. Extraction performed followed by radiotherapy in more prone to avascular necrosis of the socket bone due to these three Hs, which leads to decreased blood flow with decreased healing cells in combination with decreased oxygen leading to osteoradionecrosis.

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