显微超声技术探查下颌第一恒磨牙近中中根管和远中中根管及其相关影响因素的回顾分析

A retrospective analysis of the detection of the middle mesial canal and middle distal canal and its related influencing factors of the mandibular first permanent molar using Dental operating microscope and ultrasonic equipment

目的:评估牙科手术显微镜(DOM)结合超声根管治疗仪探查下颌第一恒磨牙额外根管即近中中根管(MMC)和远中中根管(MDC)的有效性及其相关影响因素。方法:回顾2021年06月至2024年06月进行根管治疗的166例患者175个下颌第一恒磨牙,均利用显微镜观察结合超声清理,探查并疏通根管。记录患者的性别、年龄、牙位,并进行统计学分析。结果:额外根管(MMC/MDC)总的发现率为17.14%,其中25个患牙发现MMC(14.29%),5个患牙探查到MDC(2.86%),MMC发生率高于MDC(P<0.001)。各年龄组间MDC/MMC的检出率无统计学差异(P>0.05);MMC/MDC与性别无明显相关性;同时左右两侧分布无明显差异(P>0.05)。结论:DOM和超声根管治疗仪的联合应用有助于牙科医生探查和疏通额外根管(MMC/MDC),有利于控制根管系统内感染,进一步提高治疗成功率。

AIM:To study the effectiveness and related influencing factors of using dental operating microscope(DOM)and ultrasonic equipment to explore the extra root canal,namely middle mesial canal(MMC)and middle distal canal(MDC)of the first permanent molar in the mandibular region.METHODS:A retrospective study was conducted on 166 patients with 175 mandibular first molars from June 2021 to June 2024,who were treated by the first author using microscope observation and ultrasonic equipment to clean,probe,and unblock the root canals.The patients'gender,age and tooth position were recorded and analyzed statistically.RESULTS:The total incidence of MMC/MDC was 17.14%.Among them,25 teeth were found to have MMC(14.29%),and 5 teeth were found to have MDC(2.86%).The incidence of MMC was higher than that of MDC(P<0.001).There was no statistically significant difference in the incidence of MDC/MMC among different age groups(P>0.05);there was no significant correlation between MDC/MMC and patient gender,and no significant difference between left and right distribution(P>0.05).CONCLUSION:The combined application of DOM and ultrasonic equipment helps dentists to explore the extra root canal(MMC/MDC),which is beneficial for controlling infections within the root canal system,further improving the success rate of treatment.