Patients received combination radiotherapy had a lower trismus than those of simple radiotherapy group (7.% VS .8%, P <0.0).
Patients received combination radiotherapy had a lower trismus than those of simple radiotherapy group (7.% VS .8%, P <0.0).
张口困难发生率综合放疗组低于单纯外照射组（7．％对 ．8％，P＜0．0）。