颌面部肌肉是口颌系统的重要组成部分,它与咬合及颞颌关节有非常密切的关系。肌肉的功能受中枢神经系统的支配,是非常敏感而精细的。由于中枢神经系统的异常情况,例如精神紧张;或是周围刺激传入中枢神经系统所引起的反射,均可使肌肉的正常功能发生改变,其变化的程度从微小的适应乃至紧张度的极度增高。经肌电图及MKG检查,颌面部肌肉紧张的情况时有发生,只 Maxillofacial muscle is an important part of the oral jaw system, which has a very close relationship with occlusion and temporomandibular joint. Muscle function is dominated by the central nervous system, is very sensitive and sophisticated. Due to the abnormalities of the central nervous system, such as mental stress, or the surrounding reflex caused by afferent afferent central nervous system, the normal function of the muscle can be changed, and the degree of its change changes from slight adaptation to extreme increase of tension . EMG and MKG examination, maxillofacial muscle tension occurred from time to time, only