根管预备是根管治疗的难点之一,而根尖偏移是根管预备过程中较容易产生的医源性错误。根管预备过程中产生的根尖偏移会破坏根管原有的解剖结构,造成根管清理不彻底,产生微渗漏,甚至导致根管治疗的失败。近年来,根管预备中所引起的根尖偏移越来越引起学者的重视。临床医生充分了解根尖偏移的原因及危害,将有助于其在根管预备中采取有效措施,避免根尖偏移的发生。 Root canal preparation is one of the difficulties of root canal therapy, while apical offset is more likely to cause iatrogenic errors during root canal preparation. Apex offset during root canal preparation can destroy the original anatomy of root canal, resulting in incomplete root canal cleaning, microleakage, and even failure of root canal therapy. In recent years, the root canal offset caused by root canal preparation has attracted more and more scholars’ attention. Clinicians to fully understand the causes and hazards of apical migration, will help them in the root canal preparation to take effective measures to avoid the occurrence of apical migration.