To explore its causes and guide future work, it is in our hospital from 2003 to 2004 two years to do root canal treatment of patients during treatment for the pain of a retrospective analysis.
为探讨其发生原因，指导未来工作，现对我院2003~2004年2年间做根管治疗的患者出现治疗期间疼痛的情况作一回顾性分析。
Methods We used the root apex locator to measure work length of each root canal of 36 cases and compared the measured results.
方法用根尖定位仪测量36例患牙的每个根管工作长度，并进行比较。
Methods We used the root apex locator to measure work length of each root canal of 36 cases and compared the measured results.
方法用根尖定位仪测量36例患牙的每个根管工作长度，并进行比较。
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