颅面部的垂直高度相对于面部各部分的比例来讲 ,是一个更精确的数据 ,颅面中上部的距离是由骨骼决定的 ,面下三分之一的高度则部分决定于牙合的垂直高度。面下部分高度不足往往是牙合平面高度不足的临床表现 ,改变垂直牙合高度会使面部软组织的观感出现明显的变化 ,即面部各部分的比例协调和美观关键是有一个理想的垂直牙合高度 The vertical height of the craniofacial region relative to the proportion of the various parts of the face is a more accurate figure, with the upper craniofacial distance determined by the bones and the lower third of the height determined in part by the occlusal vertical height. The sub-surface under-height is often the clinical manifestations of the occlusal plane height deficiency. Changing the vertical occlusal height will change the appearance of the facial soft tissue obviously. That is to say, the key to the harmony and aesthetics of facial parts is to have an ideal vertical occlusal height