题目内容
下颌恒磨牙开髓部位应在拾面偏向颊尖处，因为
2022-02-22
A.唇舌径在牙颈部最大
B.根管较小，根管侧壁薄，仅厚1mm
C.近远中径在拾面宽而近颈部窄
D.髓室顶与髓室底相距较近
E.牙冠向舌侧倾斜，髓室偏向颊侧
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