根管显微镜在发现离体上颌第一磨牙近中颊根第二根管中的作用  

Role of root canal microscope in the detection of mesiobuccal 2nd canal(MB2) of extracted maxillary first molar

作　　者：沙鑫家[1] 孙汉堂[1] 张亚庆[1] 

机构地区：[1]第四军医大学口腔医学院,陕西西安710032

出　　处：《牙体牙髓牙周病学杂志》2008年第1期12-14,共3页Chinese Journal of Conservative Dentistry

摘　　要：目的:比较肉眼和应用根管显微镜条件下,离体上颌第一磨牙近中颊根第二根管(MB2)的发现率,为推广根管显微镜的临床应用提供依据。方法:离体上颌第一磨牙共105个,分别肉眼下使用传统开髓口、改良开髓口,根管显微镜下探查寻找MB2,记录MB2发现率。结果:传统开髓口、改良开髓口和根管显微镜条件下,MB2的发现率分别为45.71%,54.29%,82.86%,肉眼下传统开髓口和改良开髓口MB2的发现率与应用根管显微镜时MB2的发现率存在显著差异(P<0.05)。结论:应用根管显微镜可以极大地提高MB2的发现率。AIM： To compare the detection rates of the 2nd mesiobuccal canal （MB2） of extracted maxillary first molar with or without microscope. METHODS： One humdred and five extracted maxillary first molars were divided into 3 groups for the detection of MB2 ： group of traditional coronal cavity preparation （ group A） , group of improved coronal cavity preparation （group B） and group of coronal cavity preparetion by using root canal microscope （group C）. Detection rates of the groups were recorded. RESULTS： The detection rates of MB2 of the 3 groups were 45.71% ,54.29% and 82.86% in group A, B and C respectively. Significant discrepancies were found among B them. CONCLUSION ： Detection rate of MB2 can be greatly improved by the use of root canal microscope.

关 键 词：根管显微镜 MB2 传统开髓口 改良开髓口 

分 类 号：R780.5[医药卫生—口腔医学]