唇颊舌的形态与功能对牙列正常位置的维持有一定影响,这些组织中任何一个肌肉力量不正常或不平衡都可产生错朌,并使错(牙合)持续下去。多数正畸医师也同意错(牙合)矫治的成功与否,在很大程度上取决于肌肉平衡的建立和保护。在唇舌形态与功能中,人们往往注意形态上的改变及各种不良习惯如吮拇、口呼吸等的影响,但是,临床实践中异常吞咽对错(牙合)的影响,亦需予以必要的重视。一、异常吞咽的发生率 Straub关于异常吞咽的报告,在国外 The shape and function of the buccolingual tongue have an effect on the maintenance of the normal position of the dentition. Any abnormal or unbalanced muscle strength in these tissues can cause malocclusion and prolong the occlusion. Most orthodontists also agree that the success of a malocclusion largely depends on the establishment and protection of muscle balance. In the form and function of the lip and tongue, people often pay attention to the morphological changes and various unhealthy habits such as sucking the thumb and mouth breathing, etc. However, the clinical practice of abnormal swallowing the effect of malocclusion (occlusion) also need to be Pay attention. First, the incidence of abnormal swallowing Straub reports on abnormal swallowing in foreign countries