Barril I, Cochet J Y, Ricci C
Rev Fr Endod. 1989 Sep;8(3):47-58.
The prevalence of "C" shaped root canals in the second mandibular molars is relatively low, but diagnosis and treatment of these canals are sometimes difficult. Through clinical cases, the authors emphasize on the importance of preoperative X-rays and describe convenient preparation techniques. Some "C" shaped canals are difficult to interpretate because of the thickness of bone trabeculae, and a "C" shaped canal must be suspected when the roots are fuse and/or very close each other.
下颌第二磨牙“C”形根管的发生率相对较低，但这些根管的诊断和治疗有时较为困难。通过临床病例，作者强调了术前X线检查的重要性，并描述了简便的预备技术。由于骨小梁较厚，一些“C”形根管难以解读，当牙根融合和/或彼此非常接近时，必须怀疑存在“C”形根管。
