Melo Daniela P, Pontual Andrea A, Almeida Solange M, Campos Paulo F, Tosoni Guilherme M
Universidade Estadual De Campinas, Sao Paulo, Brazil.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2009 Jan;107(1):122-6. doi: 10.1016/j.tripleo.2008.04.033. Epub 2008 Jul 25.
Our aim was to investigate the DenOptix system for detection of proximal caries using alternative erasing times for the photostimulable phosphor plates.
Human teeth were X-rayed with phosphor plates using different erasing times. Five observers evaluated the images for the presence of caries by scoring the proximal surfaces of each tooth. Mean pixel intensity analyses were also carried out. The erasing times were evaluated using receiver operating characteristic (ROC) curve analysis. Analysis of variance for differences among erasing times and pixel intensity values was performed, followed by linear regression analysis for correlation between these variables.
The mean ROC curve for each erasing time varied from 0.61 to 0.66 (not significant). Analysis of variance did not show any significant effect of the erasing times on the pixel intensity values of the images (P > .05).
Erasing times for DenOptix phosphor plates from 20 to 130 s were satisfactory for diagnosis of proximal caries, and their use is therefore feasible in clinical practice.
我们的目的是研究DenOptix系统，该系统使用光激励荧光板的不同擦除时间来检测近端龋齿。
使用不同擦除时间的荧光板对人类牙齿进行X射线检查。五名观察者通过对每颗牙齿的近端表面进行评分来评估图像中是否存在龋齿。还进行了平均像素强度分析。使用受试者操作特征（ROC）曲线分析来评估擦除时间。对擦除时间和像素强度值之间的差异进行方差分析，然后对这些变量之间的相关性进行线性回归分析。
每个擦除时间的平均ROC曲线在0.61至0.66之间变化（无显著性差异）。方差分析未显示擦除时间对图像像素强度值有任何显著影响（P>.05）。
DenOptix荧光板20至130秒的擦除时间对于近端龋齿的诊断是令人满意的，因此在临床实践中使用是可行的。
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