CBCT结合显微超声技术诊治老年疑难根管71例报告

目的：评价锥形束CT（ CBCT）结合显微超声技术诊断治疗老年疑难根管的临床效果。方法：选择71例老年患者的124个均因传统方法根管治疗失败的疑难根管作为研究对象，通过CBCT检查判断根管数目、根管口的位置、根管弯曲角度，应用显微超声技术去除钙化组织，探查并疏通根管，统计根管疏通成功率。结果：124个疑难根管中，成功疏通根管108个（其中包含寻及11个遗漏根管），成功率87．1％，牙位和钙化位置对疏通率有影响；两个根管发现根裂，建议拔除。结论：CBCT与显微超声技术联合使用，为临床诊治老年疑难根管提供了有效的方法。

Treatment of the elderly difficult root canal of 71 Cases by using micro ultrasonic diagnosis with cone-beam CT

Objective:To evaluate the clinical effects of treatment in elderly by using cone-beam CT( CBCT) and mi-cro ultrasound diagnosis.Methods:There were 124 difficult root canals with bend,calcification,omissions or crack which with treatment failure by using traditional therapy in 71 elderly patients.To determine the number of the root canals,the location of the root canal orifices,root canals bending angle by CBCT,and to remove calcified tissue,exploration and dredging root canals by ultrasound assisted.The were counted and analyzed.Results:Among the 124 difficult root canals,there were 108 root ca-nals with successful dredging which included seeking the 11 missing root canals with 87.1% success rate.The position of teeth and calcification related to success rate of canal dredging.Two root canals with crack pipe were proposed removal.Con-clusion:CBCT combination with ultrasonic microscopy for clinical diagnosis and treatment of the elderly difficult root canal provides an effective method.