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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个可疑牙合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。
OBJECTIVE: To compare the accuracy of clinical examination (CE), routine X-ray (CR), occlusal wing (BW) and dental radiography (RVG) in the diagnosis of suspicious occlusal caries. Methods: Forty - four teeth with suspected occlusal surface caries were studied. The true and false positive rate (TP, FP) and the predicted value (TP / FP) were calculated by histopathological examination. Results: TP and FP were: CE = 0.63 and 1.91, CR = 0.59T and 0.88, BW = 0.39 and 0.58, RVG = 0.68 and 1.85. TP / FP is: CE = 1.91, CR = 0.88, BW = 0.58, RVG = 2.06. There was no significant difference between RVG and CE and CR (P> 0.05). Conclusion: RVG can be expected to increase diagnostic efficacy and reduce X-ray dose and produce immediate images.