下颌切牙根管治疗时应防止侧穿根管壁，因为A.唇舌径在牙颈部最大 B.根管较小，根管侧壁薄，仅厚1mm C.近远中径在面宽而近颈部窄 D.髓室顶与髓室...

作者: tihaiku 人气: - 评论: 0

问题下颌切牙根管治疗时应防止侧穿根管壁，因为

选项 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

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

答案 B

解析

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