上颌第一磨牙各根管口的形态是A.近颊根管口较圆 B.若近颊根分为颊、舌两根管口时，两根管口较扁 C.近颊根管的舌侧根管口距舌侧根管最近 D.远颊根管...

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问题上颌第一磨牙各根管口的形态是

选项 A.近颊根管口较圆 B.若近颊根分为颊、舌两根管口时，两根管口较扁 C.近颊根管的舌侧根管口距舌侧根管最近 D.远颊根管口较扁 E.舌侧根管口较窄

答案 C

解析

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