The Degree and Time‐Course Assessment of Radiation‐Induced Trismus Occurring After Radiotherapy for Nasopharyngeal Cancer

Abstract

By means of measurement over a period of time, it was found that patients with nasopharyngeal cancer had a mean decrease in initial interincisal distance of 32% at 4 years after radiotherapy. The trismus process evolved at different rates. It was rapid at 1 to 9 months after radiation therapy, then became slower and protracted over later years.