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J Endod:CBCT辅助定位上颌磨牙第二近颊根管的发生率

2017-11-22 lishiting MedSci原创

许多上颌磨牙牙髓治疗失败的原因多是因为漏查第二近颊根管(MB2)。MB2在上颌磨牙的发生率高达95%,但是这些根管在牙髓治疗过程中经常无法找到。额外的工具,如CBCT影像分析,也许可以帮助定位上颌磨牙MB2的存在。因此,这篇研究的目的是为了调查上颌磨牙治疗过程中CBCT使用的频率以及评估它对探寻MB2根管的作用。

许多上颌磨牙牙髓治疗失败的原因多是因为漏查第二近颊根管(MB2)。在95%的上颌磨牙中可发现MB2根管口,但是这些根管在牙髓治疗过程中经常无法找到。额外的工具,如CBCT影像分析,也许可以帮助定位上颌磨牙MB2的存在。因此,这篇研究的目的是为了调查上颌磨牙治疗过程中CBCT使用的频率以及评估它对探寻MB2根管的作用。研究回顾了西雅图华盛顿大学在2010和2014年之间(N?=?886)治疗过的所有上颌第一和第二磨牙的牙髓治疗记录、口内X射线照片和CBCT影像。统计学分析用来评估各组间的差异。总的来说,在所有检测的上颌磨牙中MB2的发生率为55.8%,CBCT影像辅助检测出其中的11.7%。CBCT影像分析在接受治疗的病例中使用率为16.5%,并且在再治疗病例中使用率明显增高。在5.6%的术前病例中使用CBCT的结果显示,术前CBCT影像分析后,可以发现定位更多的MB2。另外,在未做全冠修复的上颌第一磨牙可以发现更多的MB2。结论:数据显示,CBCT影像分析对于定位MB2是一种有效的工具。基于此项研究结果,在治疗上颌磨牙时,应该使用 CBCT影像分析辅助诊断。原始出处:Studebake

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