【摘要】 利用游标卡尺测量青少年口腔模型100副,用直线回归方法进行统计学分析,建立了未萌双尖牙和尖牙牙冠宽度与同颌切牙牙冠宽度之和的直线回归方程。本方程与Moyers表预测的准确性无明显差异,但本方程所得的预测值更接近实测值,配合现有牙弓长度,可以方便地预测混合牙列期是否存在潜在的恒牙列拥挤。更多还原

【Abstract】 The samples were dental casts of teenagers (50 boys and 50 girls) who had all their teeth from central incisor to the first molar. Mesiodistal tooth crown size was measured with sliding capilers. Four equations were obtained to predict the crown size of unerupted bicuspids and canines. The mean of the absolute values of the difference between the predicted values and the actual values was less than 1mm. Equations are used to diagnose the crowding of the mixed dentition.更多还原