题目内容
上颌磨牙颈部横切面的描述中，错误的是
2022-02-18
A.舌侧根管口大而圆
B.可见3个或4个根管口
C.近中颊侧根管口窄而扁
D.远中颊侧根管口位于近中颊侧根管口的远颊侧
E.髄胫呈立方形
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