Abstract
To compare the accuracy, duration, and certainty of diagnosing approximal caries in bitewing radiographs displayed in three monitors under two luminance conditions. A total of 39 teeth without evident caries were selected from 11 patients undergoing partial jaw resection. Before the operation, 13 bitewing radiographs were captured by a digital imaging system. Eight observers evaluated the images under the dark (9 lux) and bright (200 lux) conditions, using two medical-grade monitors and a commercial monitor. Using histological results as the gold standard, the areas under the receiver operating characteristic curves under different conditions were compared using the Z-test. Multivariate analysis of variance was conducted to assess the impact of various factors on diagnostic duration, while ordinal logistic regression was used to examine factors influencing diagnostic certainty level. It was considered significant when P<0.05. No significant difference was found in the diagnostic accuracy or duration for diagnosis approximal caries under two luminance conditions with the three distinct monitors (P > 0.05). Ambient light, clinical experience and the pathological grade of approximal caries have influence on the degree of diagnostic confidence (P<0.05). Different monitors and ambient luminance didn't influence the diagnostic accuracy or evaluation duration. Ambient luminance, clinical experience, and the depth of caries affect the degree of diagnostic confidence. The study employing bitewing radiographs from real patients indicates that ambient luminance, clinical experience, and the depth of caries affect the degree of diagnostic confidence.
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