问题
单项选择题
牙体舌轴在牙弓中排列的近远中倾斜情况，错误的是
A．上颌中切牙、侧切牙、尖牙的牙冠都向近中倾斜，而且侧切牙最明显。
B．按照牙冠近中倾斜的程度排列，上颌第一前磨牙＞上颌第二前磨牙＞上颌第一磨牙
C．上颌第二、第三磨牙的牙冠不倾斜
D．下颌中切牙牙冠几乎不倾斜
E．下颌第二、第三磨牙牙冠向近中倾斜
答案
参考答案：C
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牙体舌轴在牙弓中排列的近远中倾斜情况，错误的是
A．上颌中切牙、侧切牙、尖牙的牙冠都向近中倾斜，而且侧切牙最明显。
B．按照牙冠近中倾斜的程度排列，上颌第一前磨牙＞上颌第二前磨牙＞上颌第一磨牙
C．上颌第二、第三磨牙的牙冠不倾斜
D．下颌中切牙牙冠几乎不倾斜
E．下颌第二、第三磨牙牙冠向近中倾斜
参考答案：C
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