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Oral Surgery · single question

What is the most common site for osteonecrosis of the jaw (e.g., medication-related osteonecrosis of the jaw, MRONJ)?

  1. The posterior mandible (due to comparatively lower vascularity than the maxilla)
  2. The anterior maxilla
  3. The posterior maxilla
  4. The anterior mandible
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Correct answer: A. The posterior mandible (due to comparatively lower vascularity than the maxilla)

The posterior mandible is the most common site for osteonecrosis of the jaw (including bisphosphonate/antiresorptive-related and radiation-related osteonecrosis), largely attributed to its comparatively lower vascularity relative to the maxilla, which has a richer blood supply.

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