磨牙症是非功能性的磨牙或紧咬牙(Clenching)。磨牙可使牙齿严重磨损,引起牙齿发酸、牙髓炎、牙髓坏死与牙折等。还能使牙齿松动,牙龈萎缩,进一步加剧牙周病。磨牙症患者常伴有咀嚼肌疲劳、面颌部疼痛、头痛、颞下颌关节功能紊乱,咀嚼肌肥大影响美观,重者可影响正常的生活与社会活动,尤其夜磨牙特有的响声干扰他人睡眠。为了进一步了解磨牙症的分类、症状、病因以便改善 Bruxism is non-functional molars or clenching. Molar teeth can cause severe wear and tear, causing sore teeth, pulpitis, pulp necrosis and dental folds. Can also make the teeth loose, gingival recession, to further aggravate periodontal disease. Patients with bruxism are often accompanied by masticatory muscle fatigue, facial pain, headache, temporomandibular joint dysfunction, masticatory muscle hypertrophy affect the appearance of beauty, severe cases can affect normal life and social activities, especially the special molars disturbed sleep. In order to further understand the classification of bruxism, symptoms, etiology in order to improve