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对３０名无牙颌和３９名中老年正常胎进行了颌关系及平面Ｘ线头影测量分析，结果表明戴总义齿垂直距离明显降低，下颌处于正中关系位；总义齿的颌平面斜度及上下中切牙的前后位置与天然牙者相近，而平面前点及后点则明显上移。
The mandibular relationship and plane X-ray cephalometric analysis of 30 edentulous and 39 middle-aged and elder normal fetuses showed that the vertical distance of wearing total denture was significantly reduced and the mandible was in the median position. The maxillary plane inclination of the total denture, Before and after the position of the incisors and natural teeth close to the point, and the point before and after the plane was significantly shifted up.