The incidence of C-shaped root canal system is verdicted according to its anatomic features.
根据C形根管系统的解剖学特征判断其发生率。
参考来源 - 下颌第二磨牙C形根管发生率的研究—《中国美容医学》—2010年第8期—龙源期刊网·2,447,543篇论文数据，部分数据来源于NoteExpress
根据C形根管系统的解剖学特征判断其发生率。
The incidence of C-shaped root canal system is verdicted according to its anatomic features.
根管系统虽较为复杂，但主要是双根管和三根管型。
The root canal systems were comparatively complex, but most of them were most of double three canals.
目的：根管系统的复杂性使得完善严密的三维封闭根管系统成为根管治疗成功的难点。
Objective: It is difficult for three-dimensional sealing of root canal because of the complexity of the root canal system.
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