J Endod:减少根管内充填材料和金属伪影的工具对CBCT影像中MB2检测的影响

2020-06-08 lishiting MedSci原创

这篇研究的目的是为了评估CBCT影像中减少不同根管内材料和金属伪影的工具(MAR)对检测上颌第一磨牙MB2的影响。

这篇研究的目的是为了评估CBCT影像中减少不同根管内材料和金属伪影的工具(MAR)对检测上颌第一磨牙MB2的影响。

研究选取40颗上颌第一磨牙,通过micro-CT影像确定其中半数存在MB2。所有牙齿除了MB2均进行预备,并使用牙胶尖充填至工作长度。将每颗牙齿分别插入至一个干燥的人头骨中,并使用OP300 device (Instrumentarium Dental, Tuusula, Finland)进行CBCT扫描伴随使用MAR与否。对每个扫描牙齿的腭根管使用不同的充填材料:牙胶尖、银-钯(Ag-Pd)、nickel-chromium (Ni-Cr)和cobalt-chromium (Co-Cr)。由5名检测者通过5点比例尺评估是否存在MB2。采用weighted Kappa检验评估检测者间和检测者内的再现性。在不同组内计算诊断价值(敏感性、特异性和ROC曲线下面积),并通过two-way analysis of variance和Tukey post hoc检验进行比较。

结果显示,观察者间和观察者内的一致性在不同的研究条件下发生变化。在不考虑根管内材料和MAR的使用时,诊断价值间不存在显著性差异(p> 0.05)。

结论:根管内存在不同的材料和使用MAR与否均不会影响CBCT对MB2的检测。

原始出处:

Lucas de Paula Lopes Rosado, Fernanda Bulhões Fagundes, et al. Influence of the Intracanal Material and Metal Artefact Reduction Tool in the Detection of the Second Mesiobuccal Canal in Cone-Beam Computed Tomography Exams. J Endod., 2020 May 8;S0099-2399(20)30302-2. doi: 10.1016/j.joen.2020.04.011.

 

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    2020-07-18 Boyinsh
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    2020-06-10 智慧医人
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