Aljehani Abdulaziz, Yang Lifang, Shi Xie-Qi
Department of Cariology and Endodontology, Institute of Odontology, Karolinska Institutet, Huddinge, Sweden.
Acta Odontol Scand. 2007 Feb;65(1):60-3. doi: 10.1080/00016350601058051.
A new generation of the laser fluorescence device, DIAGNOdent, for caries detection and quantification has been introduced recently. It is the DIAGNOdent pen. The aim of this study was to compare the validity and reliability of both laser-based devices, DIAGNOdent and the DIAGNOdent pen, in quantifying smooth surface caries.
The material comprised a sample of 52 premolar teeth extracted on orthodontic indication. The teeth were visually sound or had various stages of non-cavitated carious lesions on smooth surfaces. All teeth were photographed and measured with both DIAGNOdent and the DIAGNOdent pen by two examiners independently. The teeth were then sectioned into 300-microm slices and analysed under a microscope for verification of lesion depth. Histopathological analyses were performed by two observers to assess lesion depth, which was classified into five categories ranging from sound to dentinal caries. Reliability and validity of the two devices were evaluated in terms of intra-class coefficients and Spearman rank correlation coefficient, respectively. The relation between measurements performed by DIAGNOdent and the DIAGNOdent pen was analyzed using Pearson's correlation coefficient.
Both DIAGNOdent and the DIAGNOdent pen had excellent intra-observer agreement and acceptable inter-observer agreement. The correlation with histology for DIAGNOdent and the DIAGNOdent pen ranged between 0.47 and 0.57, although the correlation between DIAGNOdent and the DIAGNOdent pen was high.
In this in vitro study, the new laser fluorescence device, the DIAGNOdent pen, showed similar reliability and validity at quantification of smooth surface caries compared to the conventional DIAGNOdent device. Agreement between DIAGNOdent and the DIAGNOdent pen was excellent.
新一代用于龋病检测和定量的激光荧光设备DIAGNOdent最近已推出。它就是DIAGNOdent笔。本研究的目的是比较两种基于激光的设备DIAGNOdent和DIAGNOdent笔在定量平滑面龋方面的有效性和可靠性。
材料包括因正畸需要拔除的52颗前磨牙样本。这些牙齿外观正常或在平滑面上有不同阶段的非龋洞性龋损。所有牙齿均由两名检查者分别用DIAGNOdent和DIAGNOdent笔进行拍照和测量。然后将牙齿切成300微米厚的切片，并在显微镜下进行分析以验证龋损深度。由两名观察者进行组织病理学分析以评估龋损深度，其分为从正常到牙本质龋的五类。分别根据组内系数和Spearman等级相关系数评估两种设备的可靠性和有效性。使用Pearson相关系数分析DIAGNOdent和DIAGNOdent笔所做测量之间的关系。
DIAGNOdent和DIAGNOdent笔在观察者内一致性方面都非常好，在观察者间一致性方面也可以接受。DIAGNOdent和DIAGNOdent笔与组织学的相关性在0.47至0.57之间，尽管DIAGNOdent和DIAGNOdent笔之间的相关性很高。
在这项体外研究中，新型激光荧光设备DIAGNOdent笔在定量平滑面龋方面显示出与传统DIAGNOdent设备相似的可靠性和有效性。DIAGNOdent和DIAGNOdent笔之间的一致性非常好。
