英语语法分析

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。

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。

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 .

目的：建立在混合牙列早期预测恒侧切牙牙冠及恒侧切牙至第二前磨牙冠宽和的回归方程。