CAJ | 학술논문

目的：探讨后牙根管再治疗的原因及临床操作的难点。方法对2004年1月~2010年1月就诊的127例患者138颗后牙根管再治疗病例进行病因分析，并进行相关处理。结果138颗患牙中，115例根管再治疗成功，患牙症状缓解或消失。经过至少半年以上时间的随访，成功率为83.3%。结论后牙根管结构复杂，遗漏根管是后牙治疗失败的重要原因之一，根管欠充与超充是另一重要原因。严格准确的根管预备可以提高根管治疗的成功率。
목적：탐토후아근관재치료적원인급림상조작적난점。방법대2004년1월~2010년1월취진적127례환자138과후아근관재치료병례진행병인분석，병진행상관처리。결과138과환아중，115례근관재치료성공，환아증상완해혹소실。경과지소반년이상시간적수방，성공솔위83.3%。결론후아근관결구복잡，유루근관시후아치료실패적중요원인지일，근관흠충여초충시령일중요원인。엄격준학적근관예비가이제고근관치료적성공솔。
Objective To explore the causes of endodontic retreatment in posterior teeth and difficulties in clini-cal operation. Methods Etiologies of 127 patients with endodontic retreatment in 138 posterior teeth from Jan. 2004 to Jan. 2010 were analyzed. Results Treatment in 115 diseased teeth was successful with symptoms remission or disap-peared. Successful rate was 83. 3% after at least half a year follow-up. Conclusion The structure of root canal in posterior teeth is complex. One of the important reasons for failure in posterior teeth is missing root canal. Underfilling or overfilling in root canal is another important reason. Strict and accurate root canal preparation can increase success-ful rate of root canal treatment.