Kühnisch Jan, Bücher Katharina, Henschel Volkmar, Hickel Reinhard
Department of Conservative Dentistry and Periodontology, Ludwig-Maximilians-University of Munich, Munich, Germany.
Eur J Oral Sci. 2007 Jun;115(3):206-11. doi: 10.1111/j.1600-0722.2007.00441.x.
The aim of this in vitro study was to investigate the intra- and interdevice reproducibility of the DIAGNOdent 2095 (DD2095) and the new DIAGNOdent Pen (DDPen) on non-cavitated occlusal caries sites. Altogether, 241 sites on 90 molars were inspected twice with both devices and by four examiners. The intra/interdevice reproducibilities were assessed by means of the intraclass correlation coefficient (ICC) as well as by the range of the 95% limits of agreement of Bland & Altman. Additionally, a linear mixed-effects model was fitted with fixed effects for the visual scores and the devices used and random effects for occlusal sites and examiners within each measurement site. In result, the following values were determined for the intradevice reproducibility: DD2095: ICC 0.89, range 42.3; and DDPen: ICC 0.88, range 49.3. The interdevice reproducibility was found to be in the same order of magnitude (ICC 0.82, range 53.7). The comparison between both devices indicated significantly lower mean values for the DDPen. The estimates of the linear model show that there is a high variation between the sites that cannot be explained by the fixed effects. In conclusion, both devices showed an imperfect reproducibility, which indicate the usage as adjunct tool only in clinical practice.
这项体外研究的目的是调查DIAGNOdent 2095（DD2095）和新型DIAGNOdent Pen（DDPen）在非龋洞型咬合面龋部位的设备内和设备间的可重复性。总共对90颗磨牙上的241个部位使用这两种设备并由四名检查者进行了两次检查。通过组内相关系数（ICC）以及Bland & Altman一致性界限的95%范围来评估设备内/设备间的可重复性。此外，拟合了一个线性混合效应模型，其中视觉评分和使用的设备为固定效应，每个测量部位内的咬合面部位和检查者为随机效应。结果，确定了以下设备内可重复性的值：DD2095：ICC 0.89，范围42.3；DDPen：ICC 0.88，范围49.3。发现设备间的可重复性处于相同数量级（ICC 0.82，范围53.7）。两种设备之间的比较表明DDPen的平均值显著更低。线性模型的估计表明，部位之间存在很大差异，固定效应无法解释这些差异。总之，两种设备的可重复性都不理想，这表明在临床实践中仅用作辅助工具。
