CAJ | 학술논문

目的：分析根管内器械折断的特点及治疗方法，以期为临床治疗提供参考。方法：收集根管内器械折断患者94例，记录折断器械的类型及其在根管内的位置，分析器械折断的特点并制定临床治疗方案，记录折断器械取出的成功率。结果：94例折断器械中，发生于前牙10例，前磨牙15例，磨牙69例；其中不锈钢锉30例，镍钛锉49例，超声工作尖5例，拔髓针3例，螺旋输送器7例。发生于根管上段14例；中段28例；下端52例。显微镜下取出66例，成功率为70．2％。结论：器械折断好发于磨牙细小根管中下段，显微超声技术是处理根管内折断器械有效的治疗方法，结合其他技术可有效提高治疗的成功率并减少并发症。
목적：분석근관내기계절단적특점급치료방법，이기위림상치료제공삼고。방법：수집근관내기계절단환자94례，기록절단기계적류형급기재근관내적위치，분석기계절단적특점병제정림상치료방안，기록절단기계취출적성공솔。결과：94례절단기계중，발생우전아10례，전마아15례，마아69례；기중불수강촤30례，얼태촤49례，초성공작첨5례，발수침3례，라선수송기7례。발생우근관상단14례；중단28례；하단52례。현미경하취출66례，성공솔위70．2％。결론：기계절단호발우마아세소근관중하단，현미초성기술시처리근관내절단기계유효적치료방법，결합기타기술가유효제고치료적성공솔병감소병발증。
AIM:To observe the characteristics of broken instruments in root canals and to evaluate the suc-cess rate of broken instrument removal.METHODS:94 cases with broken instruments in root canals were collected. The types and position of the broken instruments in root canals were recorded.Success rate of the broken instrument re-moval was analysed.RESULTS:Among the 94 broken instruments in root canals,10 were in anterior teeth,15 in pre-molars and 69 in molars.Concerning the types of instruments, 30 were stainless steel files, 49 nickel-titanium rotary instrunlents, 5 ultrasonic tips, 3 barbed broaches and 7 spiral conveyors.In regard to position of broken instruments, 14 were in upper root canals, 28 in middle root canals, and 52 in lower root canals.The success rate of broken instru-ments removal was 70.2%under dental operating microscope.CONCLUSION:Broken instrument occurred frequent-ly in the middle and lower part of small canals in molars.Micro-ultrasonic technique is effective in clinical assessment and management of broken instruments in root canals.