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首页> 外文期刊>Caries research >In vitro comparison of Nyvad's system and ICDAS-II with Lesion Activity Assessment for evaluation of severity and activity of occlusal caries lesions in primary teeth.
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In vitro comparison of Nyvad's system and ICDAS-II with Lesion Activity Assessment for evaluation of severity and activity of occlusal caries lesions in primary teeth.

机译：Nyvad系统和ICDAS-II与病变活动评估的体外比较，用于评估乳牙咬合龋病变的严重程度和活动。

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摘要

This in vitro study of occlusal surfaces on primary molars aimed to: (1) evaluate the reproducibility of the Nyvad and ICDAS-II visual systems in detecting caries; (2) to test the accuracy of the systems in estimating lesion depth, and (3) to examine the association between the Nyvad system and the Lesion Activity Assessment system, an adjunct to ICDAS-II. Two samples of extracted primary molars (sample 1, n = 38; sample 2, n = 69) were evaluated independently by 2 examiners. In this in vitro study, evaluation of plaque in the Nyvad system was not possible. Histology (sample 2) was used to validate lesion depth. Area under ROC curves (A(z)), sensitivity, specificity and percent agreement of both systems were calculated at D1, D2 and D3 thresholds. Both systems showed kappa for intra- and inter-examiner agreement >0.86 and good correlation with histology: Spearman rho = 0.73 (Nyvad) and 0.78 (ICDAS-II). They presented similar performances except that ICDAS-II showed significantly higher sensitivity (Nyvad 0.89; ICDAS 0.92) and A(z) (Nyvad 0.85; ICDAS 0.90) for the D1 threshold. The correlation between the systems for lesion activity (Cramer's V) was 0.71. Therefore, both visual systems are reliable and can estimate caries lesion depth on primary teeth. Under in vitro conditions, there is no major difference between the Nyvad system and Lesion Activity Assessment in assessing caries activity.
机译：这项对初级磨牙的咬合面的体外研究旨在：（1）评估Nyvad和ICDAS-II视觉系统在检测龋齿中的可重复性; （2）测试系统在估计病变深度方面的准确性，以及（3）检查Nyvad系统与作为ICDAS-II附件的病变活动评估系统之间的关联。由两名检查员独立评估了两个提取的第一磨牙样品（样品1，n = 38;样品2，n = 69）。在这项体外研究中，无法评估Nyvad系统中的斑块。组织学（样品2）用于验证病变深度。在D1，D2和D3阈值下计算两个系统的ROC曲线下面积（A（z）），敏感性，特异性和一致性百分比。两种系统均显示考官内和考官间一致性> 0.86的kappa值，并与组织学相关性良好：Spearman rho = 0.73（Nyvad）和0.78（ICDAS-II）。他们表现出相似的性能，除了ICDAS-II对D1阈值显示出显着更高的灵敏度（Nyvad 0.89; ICDAS 0.92）和A（z）（Nyvad 0.85; ICDAS 0.90）。病变活动系统之间的相关性（Cramer's V）为0.71。因此，两个视觉系统都是可靠的，并且可以估计乳齿上的龋损深度。在体外条件下，Nyvad系统与病变活动评估之间在评估龋齿活动方面没有重大差异。

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