夜磨牙是一种非功能性咬牙。文献报导发生率在15%—88%。对夜磨牙已采用了肌电图技术、口内遥控测量、睡眠实验,颌骨声音判断以及其它多种方式的研究方法。认为引起夜磨牙的两个主要因素:一是(牙合),二是精神因素。最常用的治疗方法是咬合护板。1974年Forgione报告用一种简单有效的夜磨牙监测器测定夜磨牙的量,这种监测器是适合上下颌外形的着有不同颜色小点的塑料片。夜间戴上因夜磨牙而磨掉的部分可被 Night molars are non-functional teeth. The incidence of reported in the literature 15% -88%. Molar teeth have been used on the ground EMG technology, remote measurement of the mouth, sleep experiments, judging the sound of the jaw and many other ways of research methods. Two main factors that cause night bruxism: one is (occlusion), the other is mental factors. The most common treatment is bite guards. Forgione reported using a simple and effective night molars monitor 1974 molars, the monitor is suitable for the shape of the jaw with different color dots plastic sheeting. The part worn at night due to bruxism can be worn