由于缺牙的原因、时间和位置的不同而造成上下颌弓的前后、左右吸收不一致。为了使人工牙列更好地与上下颌弓的形状、大小和位置关系相适配,我们曾就无牙颌弓的几何形状的数学模型和形态分类进行研究,在此基础上再采用多元回归法对上下牙列与上下无牙颌弓 Due to the reasons for lack of teeth, the time and location of the different caused by the mandibular arch anteroposterior, left and right absorption inconsistent. In order to make the artificial dentition better fit the shape, size and position of the maxillary and mandibular arch, we have studied the mathematical model and morphological classification of the edentulous arch geometric shape, and then based on multiple regression Law on the upper and lower dentition and edentulous jaw