Abstract:

Root canal obturation is one of the difficulties in endodontic therapy procedure. It requires complete removal of pathogenic stimuli and complete obturation. Lateral canals of the main root canal are occur more commonly in the apical portion，leaving a small gap to reach the periodontal ligament. Because of the high incidence of lateral canals and other lateral accessory canals which are difficult to clean，the influence of lateral canals and apical ramifications on treatment outcome has long been given attention to by clinicians and researchers. Thermoplasticized gutta-percha filling technique has showed prominent advantages in lateral canal obturation in many studies，but there has been no clear clinical evidence as to this matter. The anatomy and obturation techniques to lateral canal and the necessity of obturation were introduced in this article.

Key words: lateral canal, apical ramification, root canal obturation

摘要：

根管充填是根管治疗中的重点及难点，要求在彻底去除病原刺激物的基础上进行严密的充填。侧支根管为发自主根管通向牙周膜的细小分支，多发生于根尖1/3。由于其高发生率及预备清理的困难性，侧支根管及其他侧副管对于根管治疗疗效的影响一直是临床医生及研究者关注的核心问题。热牙胶充填技术在侧支根管充填的多项研究中均表现出突出优势，但尚未获得充分的临床证据来证实其疗效。文章将就侧支根管的解剖、充填必要性及充填方法等做一简介。

关键词: 侧支根管, 根尖分歧, 根管充填