作者综述了许多学者的论述,对颞下颌关节疼痛一功能紊乱症状的病因学有两种解释,一种是强调形态学的因素,另一种是强调心理学的因素。至今,在临床和理论方面,所有这一领域的工作者都是从这两种解释中选择。并且,这种选择在治疗、制定研究计划、临床及实验结果的分析上还起着重要的作用。功能磨耗对咀嚼器官的健康是有意义的,像其它器官一样,自然选择导致牙列的演变和稳定。实际上,功能磨耗成了使演变的咀嚼器官有一稳定效果的形态学因素。正常的功能性磨耗,发生在牙尖窝功能单位的所有各面,磨耗主要是由于食物和其它颗粒引起的,并不是牙的表面接触所造 The review summarizes the discourse of many scholars. There are two explanations for the etiology of temporomandibular joint pain-disorder symptoms. One is to emphasize the morphological factors and the other is to emphasize the psychological factors. So far, in both clinical and theoretical terms, all workers in this field have chosen from both interpretations. And this option also plays an important role in the treatment, in the development of research plans, in the analysis of clinical and experimental results. Functional wear is significant for the health of the chewing organ, and like any other organ, natural selection leads to the evolution and stabilization of the dentition. In fact, functional abrasion has become a morphological factor in the stable evolution of the chewing organ. Normal functional wear occurs on all facets of the functional unit of the cusp. Wear is mainly due to food and other particulates, not to the surface of the teeth