Jaw mobility changes in patients with upper aerodigestive tract cancer undergoing radiation therapy

2014

Background: Radiation therapy is a therapeutic modality widely used for treatment of upper aerodigestive tract (UADT) neoplasms. However, its action is not restricted to tumor cells, and it may cause a variety of adverse reactions, including reduced jaw mobility. Material and Methods: A prospective cohort study was conducted to assess changes in jaw mobility in patients with UADT cancer undergoing radiation therapy. Results: Fifty-six patients completed the study. The results showed a significant reduction in mouth opening ( p <0.001), right lateral excursion ( p =0.038) and left lateral excursion ( p =0.035) of the jaw, a significant increase in the presence ( p <0.001) and severity of ora…