彭婕雯,朴正根

下颌第一前磨牙（Mandibular First Premolars，MFPs）牙冠窄小，根管系统结构复杂，解剖变异类型多样。在进行C形根MFPs根管治疗时，临床医生常常因为忽略其根管的解剖变异而导致不彻底的根管治疗或出现并发症，致使临床上出现MFPs根管治疗失败率较高的现象。目前，CBCT在临床上应用广泛，它能够用三维图像的形式直观、准确地将复杂的根管系统形态及细微解剖结构显示出来，常用于研究分析MFPs的C形根的解剖结构，探讨MFPs的C形根的成因、发生率、分类、解剖学特征，从而为临床诊疗提供理论依据和治疗指南。本文就CBCT对C形根MFPs的研究进展进行综述。

下颌第一前磨牙；根面沟；C形根管；解剖变异；CBCT

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