Performance of RVGui sensor and Kodak Ektaspeed Plus film for proximal caries detection

Objective. A high-resolution charge-coupled device was used to compare the diagnostic performances obtained with Trophy's new RVGui sensor and Kodak E ktaspeed Plus film with respect to caries detection. Study design, Three acquisition modes of the Trophy RVGui sensor were compa red with Kodak Ektaspeed Plus film. Images of the proximal surfaces of 40 e xtracted posterior teeth were evaluated by 6 observers. The presence or abs ence of caries was scored by means of a 5-point confidence scale. The actua l caries status of each surface was determined through ground-section histo logy. Responses were evaluated by means of receiver operating characteristi c analysis. Areas under receiver operating characteristic curves (AZ) were assessed through analysis of variance. Results. The mean AZ scores were 0.85 for film, 0.84 for the high-resolutio n caries mode, and 0.82 for both the low-resolution caries mode and the hig h-resolution periodontal mode. These differences were not statistically sig nificant (P = .70). The differences among observers also were not statistic ally significant (P = .23). Conclusion. The performance of the RVGui sensor in high- and low-resolution modes for proximal caries detection is comparable to that of Ektaspeed Plu s film.