(牙合)面可疑龋诊断不同方法比较

目的:比较临床检查(CE),常规X线片(CR),(牙合)翼片(BW)和牙科X线影像诊断系统(RVG)诊断可疑(牙合)面龋的精确性.方法:44个可疑面龋的离体牙作为研究对象,以病理组织学检查为标准,测定计算真、假阳性率(TP,FP)和预测值(TP/FP).结果:TP和FP是:CE=0.63和1.91,CR=0.59T和0.88,BW=0.39和0.58,RVG=0.68和1.85.TP/FP是:CE=1.91,CR=0.88,BW=0.58,RVG=2.06.RVG与CE及CR无显著性差异(P>0.05).结论:RVG可期望增加诊断效果,并可减少X线剂量和产生即刻影像.

Comparison of different methods for the diagnosis of questionable occlusal caries

Objective: To compare the accuracy of clinical examination(CE),conventional radiography(CR),bite wing(BW) and radiovisiograph(RVG) for diagnosis of questionable caries without cavitation. Methods: 44 extrcted teeth with questionable caries without cavitation comprised this study group.True positive rate(TP),False positive rate(FP) and Likelihood rations(TP/FP) were calculated.Pathological examination(FE) served as the validation criterion for lesion depth. Results: That TP and TP/FP were:CE=0.63 and 1.91,CR=0.59 and 0.88,BW=0.39 and 0.58,RVG=0.68 and 1.01. There are no significant difference between RVG and CE,RVG and CR( P >0.05). Conclusions: RVG images may be expected to produce an increased diagnostic yield to accompany the reduction in radiation dose and the production of instantaneous images.