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

Abstract

Objective: A high-resolution charge-coupled device was used to compare the diagnostic performances obtained with Trophy’s new RVGui sensor and Kodak Ektaspeed Plus film with respect to caries detection. Study Design: Three acquisition modes of the Trophy RVGui sensor were compared with Kodak Ektaspeed Plus film. Images of the proximal surfaces of 40 extracted posterior teeth were evaluated by 6 observers. The presence or absence of caries was scored by means of a 5-point confidence scale. The actual caries status of each surface was determined through ground-section histology. Responses were evaluated by means of receiver operating characteristic 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-resolution caries mode, and 0.82 for both the lowresolution caries mode and the high-resolution periodontal mode. These differences were not statistically significant (P = .70). The differences among observers also were not statistically 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 Plus film. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2001;91:381-5)