Staley R N, Shelly T H, Martin J F
Am J Orthod. 1979 Sep;76(3):300-9. doi: 10.1016/0002-9416(79)90026-5.
The purpose of this investigation was to determine whether, with multiple regression analysis, a more accurate method than is now available for predicting the widths of unerupted mandibular canines and premolars of mixed-dentition patients could be developed. Regression analyses were performed on data derived from 83 Caucasian subjects (42 males and 41 females) who participated in the Iowa Growth Study. Measurements were taken on plaster casts of the mandibular incisors, canines, premolars, and first molars. Measurements of the mandibular canines, premolars, and first molars were obtained from periapical radiographs taken with a long-cone technique. Newly developed regression equations for each sex had the highest correlation coefficients and smallest absolute errors of estimate when compared to previously published methods. The new equations and previous prediction methods were tested on a sample of 55 orthodontic patients (23 males and 32 females). The newly developed equations were also the most accurate method of prediction in the orthodontic patient sample.
本研究的目的是确定能否通过多元回归分析开发出一种比现有方法更准确的方法，用于预测混合牙列患者未萌出的下颌尖牙和前磨牙的宽度。对来自爱荷华生长研究的83名白种人受试者（42名男性和41名女性）的数据进行了回归分析。对下颌切牙、尖牙、前磨牙和第一磨牙的石膏模型进行了测量。下颌尖牙、前磨牙和第一磨牙的测量数据来自采用长锥技术拍摄的根尖片。与先前发表的方法相比，新开发的针对每种性别的回归方程具有最高的相关系数和最小的绝对估计误差。在55名正畸患者（23名男性和32名女性）的样本上测试了新方程和先前的预测方法。新开发的方程在正畸患者样本中也是最准确的预测方法。
