Hintze H, Wenze A
Department of Oral Radiology, Faculty of Health Sciences, University of Aarhus, Denmark.
Dentomaxillofac Radiol. 1996 Jun;25(3):115-8. doi: 10.1259/dmfr.25.3.9084258.
To compare the diagnostic accuracy of radiographs obtained both in vivo and in vitro of the same teeth for the detection of occlusal and approximal caries.
Pre- and post-extraction radiographs were obtained of 130 teeth, mostly third molars. The two sets of radiographs were assessed by four independent observers using a five-level confidence scale. Caries was validated histologically after serial sectioning. A positive diagnosis was defined as caries present in dentine occlusally and in enamel or deeper approximally. The diagnostic accuracy was expressed by ROC curve areas.
For occlusal caries, the average ROC curve area was 0.767 in the in vivo and 0.826 in the in vitro radiographs. The corresponding areas for approximal caries were 0.707 and 0.735, respectively. The differences were not significant (p > 0.05).
The outcome of radiographic caries diagnosis in the clinic appeared comparable with that obtained in the laboratory.
比较同一牙齿在体内和体外拍摄的X线片对咬合面和邻面龋的诊断准确性。
对130颗牙齿（主要是第三磨牙）在拔牙前和拔牙后拍摄X线片。由四名独立观察者使用五级置信度量表对两组X线片进行评估。在连续切片后通过组织学方法验证龋齿情况。阳性诊断定义为咬合面牙本质和邻面釉质或更深层存在龋齿。诊断准确性用ROC曲线面积表示。
对于咬合面龋，体内X线片的平均ROC曲线面积为0.767，体外X线片为0.826。邻面龋的相应面积分别为0.707和0.735。差异无统计学意义（p>0.05）。
临床中X线片龋齿诊断结果与实验室结果相当。
