Objective: Statistical analysis of mandibular molar mesiodistal crown width and tooth length and development of root.
目的：统计分析下颌第一、第二、第三磨牙牙冠近远中宽度、牙体长度、分根情况以及相关因素。
2
Results: The geometric feature parameters of 28 artificial teeth in their own coordinates were obtained, including the mesiodistal and buccolingual dimension, the height and inclination of cusp.
结果：得到28颗人工牙的颊舌径、近远中径、牙尖高度、中央窝深度、牙尖平衡斜面斜度的数据。
3
Objective :In this study , regression equations (prediction equations) were established for the purpose of accurately predicting the mesiodistal widths of the crowns of unerupted lateral incisors .