Comparison of oral pain severity
pain
Forty patients reported Grade 1 oral pain, 20 ones Grade 2 oral pain, and 2 ones Grade 3 oral pain in the night group so that their incidence of Grade 2 and 3 oral pain was 48.8% (20/41) and 4.9% (2/41), respectively; while 40 patients reported Grade 1 oral pain, 9 ones Grade 2 oral pain, and 1 one Grade 3 oral pain in the day group so that their incidence of Grade 2 and 3 oral pain was 22.0% (9/41) and 2.4% (1/41), respectively. The incidence of Grade 2 oral pain was lower in the day group compared with the night group, and the difference was statistically significant (Analysis of the onset of oral pain in the two groups during radiotherapy (