本研究的目的是得出成都地区正常(牙合)儿童及青少年牙(牙合)的正常值,并了解其生长发育情况。研究对象、标准及方法见正常(牙合)儿童及青少年颌面生长发育的测量研究。在模型上测量时,选用的标志点为上下颌乳尖牙或恒尖牙的牙尖顶点,上颌第一乳磨牙或第一双尖牙中央窝的中点,下颌第一乳磨牙及第一双尖牙的远中窝,上下第一磨牙的 The purpose of this study was to determine the normal occlusion of children and adolescent teeth in Chengdu and to understand their growth and development. Study object, standard and method of normal occlusion in children and adolescent maxillofacial growth and measurement research. When measured on the model, the selected mark points are the cusp tip of the maxillary and mandibular canine or the canine, the midpoint of the maxillary first molars or the first bicuspid central fossa, the mandibular first molars and the first The fissure far fossa, the first molar from top to bottom