CAJ | 학술논문

目的：评价显微超声技术在疑难根管再治疗中的应用。方法：选取需要根管再治疗的前牙56颗，62个根管，在根管显微镜下，采用超声根管锉，顺利疏通根管后，常规完成根管预备和根管充填，观察并评价临床疗效。结果：62个根管中，疏通了21个钙化根管，取根管内断械6个，去除根管桩7个，寻找遗漏根管11个，修补根管侧壁穿孔6个，发现根管内吸收1个，根尖封闭10个，成功完成56颗患牙（62个根管）再治疗。结论：显微超声技术在疑难根管再治疗中可以提供有效的治疗手段，提高临床治疗成功率。
목적：평개현미초성기술재의난근관재치료중적응용。방법：선취수요근관재치료적전아56과，62개근관，재근관현미경하，채용초성근관촤，순리소통근관후，상규완성근관예비화근관충전，관찰병평개림상료효。결과：62개근관중，소통료21개개화근관，취근관내단계6개，거제근관장7개，심조유루근관11개，수보근관측벽천공6개，발현근관내흡수1개，근첨봉폐10개，성공완성56과환아（62개근관）재치료。결론：현미초성기술재의난근관재치료중가이제공유효적치료수단，제고림상치료성공솔。
Objective:To evaluate the effect of dental operating microscope(DOM) and ultrasonic instruments in the management of complicated root canals. Method:56 teeth (62 root canals)that had been treated with convention repaired before were selected for root canal therapy. The root canal of all cases were retreated with ultrasonic instruments under den-tal operating microscope. The efficient of preparation and obturation was analyzed before and after treatment. Result:The 21 calcified root canals,6 canals blocked by instrument fragments,7 canals blocked by post,11 misunderstood root canals,6 canals side hole,1 root canal absorb inside,10 canals with open canal system were retreated successfully. Conclusion:The use of dental operating microscope and ultrasonic instruments is proved effective in complicated tooth root canal retreatment.