What Researchers Did
Researchers reviewed existing studies to identify factors that predict the development of mandibular osteoradionecrosis in patients treated for head and neck cancers.
What They Found
They identified several risk factors for mandibular osteoradionecrosis, including patient characteristics like smoking and poor oral health, and disease features such as large tumor size or mandibular invasion. Therapeutic factors like surgery, chemotherapy with radiation, and dental extractions after radiation also increased risk. Specifically, a mean mandibular radiation dose exceeding 48-54Gy and a high percentage of mandibular volume receiving 40-60Gy were strong predictors of osteoradionecrosis.
What This Means for Canadian Patients
For Canadian patients undergoing radiation for head and neck cancers, understanding these risk factors can help healthcare providers identify those at higher risk for mandibular osteoradionecrosis. This knowledge may lead to proactive measures, such as improved oral care before and after treatment, to potentially reduce the incidence of this severe complication. For those who do develop ORN, early identification of risk factors can inform treatment strategies, including hyperbaric oxygen therapy, which is a recognized treatment for this condition.
Canadian Relevance
This study covers osteoradionecrosis, which is a Health Canada-recognized indication for hyperbaric oxygen therapy.
Study Limitations
As a review, this study's findings are dependent on the quality and consistency of the individual studies it synthesized.