问:我今年76岁,三年前发现有磨牙现象,近来发现情况越来越严重,白天也会不自觉地磨牙。请问,老人磨牙是怎么回事?答:磨牙是指睡眠时有习惯性磨牙或白昼也有无意识磨牙习惯者,是一种长期的恶性循环疾病。夜磨牙是中枢神经系统大脑皮质颌骨运行区的部分脑细胞不正常兴奋,导致三叉神经功能紊乱。三叉神经支配咀嚼肌发生强烈持续性非功能性收缩,使牙齿发生嘎嘎响声的咀嚼运动,一般分为3型:磨牙 Q: I am 76 years old and found molars three years ago. Recently, I have found that the situation is getting worse and the teeth are moaning unconsciously during the day. Excuse me, the elderly is how the teeth? A: Molar refers to sleep when the habitual molars or the daytime there are unconscious molars habits, is a long-term vicious cycle of disease. Molar molars are part of brain cells in the cranial ganglia of the central nervous system that are not normally excited and lead to dysfunction of the trigeminal nerve. Trigeminal nerve dominant masticatory muscle strong sustained non-functional contraction, the teeth rattle chewing exercise, generally divided into 3 types: molars