超声荡洗对根管清洁效果的扫描电镜观察  

A scanning electron microscopic (SEM) evaluation of efficacy of ultrasonic irragation for root canal

作　　者：郭金洁[1] 吴佩玲[1] 谢凤莲[2] 

机构地区：[1]新疆医科大学第二附属医院口腔科,新疆乌鲁木齐830000 [2]新疆医科大学基础学院电镜室,新疆乌鲁木齐830000

出　　处：《新疆医科大学学报》2009年第3期270-272,共3页Journal of Xinjiang Medical University

基　　金：新疆维吾尔自治区科学基金资助项目(200721114)

摘　　要：目的:用扫描电镜的方法评价根管超声荡洗的清洁效果。方法:选择单根管前磨牙20颗,随机分为注射器冲洗组和超声荡洗组。机用镍钛器械预备根管后,两组最后选用不同方法冲洗根管。在根管的3个不同部位采用扫描电镜记录牙本质小管开口与玷污层情况。结果:A组牙本质小管开口数多于B组(P<0.05);两组相应部位比较,冠1/3处牙本质小管开口数之间的差异无统计学意义(P>0.05),A组在根中1/3和根尖1/3的牙本质小管开口数明显多于B组(P<0.05)。结论:用17%EDTA超声根管冲洗效果优于注射器冲洗。Objective： Using scanning electron microscope（SEM） to investigate efficacy of ultrasonic irrigation. Methods： Twenty single extracted teeth were randomly divided into two groups with ten teeth in each group （ultrasonic irrigation group and syringe irrigation group）. The final irrigation choose diffirent way, the scanning electron microscope was used to evaluate for the number of visible open dentinal tubules and smear layers. Result： The number of visible open dentinal tubules in group A are significantly greater than that in group B, In the respective third, cleaning of group A and B in the coronal third is not different. But cleaning of group A is better than group B in middle third and apical third parts. Conclusion： Ultrasonic irrigation is better than syringe irrigation in root canal therapy.

关 键 词：牙本质小管 超声荡洗 扫描电镜 玷污层 

分 类 号：R445.1[医药卫生—影像医学与核医学] R781.33[医药卫生—诊断学]