AIM: To study the relationship between root form and frequency of C-shaped canals in the mandibular second molars.

目的：调查下颌第二磨牙扇形根管的出现率与牙根形态的关系。

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AIM: To study the relationship between root form and frequency of C-shaped canals in the mandibular second molars.

目的：调查下颌第二磨牙扇形根管的出现率与牙根形态的关系。

youdao