Transparentizing technique was used to observe the root canal morphology of the maxillary second molars.
⑥应用透明牙标本法观察上颌第二恒磨牙根管形态。
参考来源 - 山东地区上颌第二恒磨牙根管系统解剖研究Root canal morphology of Mongolian and Hui Nationality is as complex as Han nationality. The differences of the anatomical shape of root canal do exist among different races.
研究结果表明,两民族根管系统的形态与汉族一样复杂多变,不同种族之间的根管解剖形态确有差别。
参考来源 - 回族和蒙古族成人恒牙形态学研究·2,447,543篇论文数据，部分数据来源于NoteExpress
This paper illustrated the characters about root canal morphology of mandibular premolars, including the formation, configurations, racial difference, classification and methods for study.
本文简要介绍下颌前磨牙多种解剖结构的形成、形态特点、人种差异、分型和研究方法。
Objective: To investigate the root and canal morphology of extracted mandibular premolars.
目的：研究离体下颌前磨牙的牙根及根管形态。
Objective To investigate the root and canal morphology of extracted maxillary second premolars.
目的观察上颌第二前磨牙的牙根及根管形态。
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