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 Ektaspeed Plus film with respect to caries detection.


METHODS
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 (A(Z)) were assessed through analysis of variance.


RESULTS
The mean A(Z) scores were 0.85 for film, 0.84 for the high-resolution caries mode, and 0.82 for both the low resolution 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).


CONCLUSIONS
The performance of the RVGui sensor in high- and low-resolution modes for proximal caries detection is comparable to that of Ektaspeed Plus film.
Department of Stomatology, School of Dentistry, Federal University of Santa Catarina, Florianopolis, Brazil.
M
M
Abreu
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Mol
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JB
Ludlow
D000704:Analysis of Variance; D001641:Bicuspid / Q000000981:diagnostic imaging; D003731:Dental Caries / Q000000981:diagnostic imaging*; D006801:Humans; D008963:Molar / Q000000981:diagnostic imaging; D012372:ROC Curve; D011856:Radiographic Image Enhancement; D016300:Radiography, Bitewing; D019252:Radiography, Dental, Digital / Q000295:instrumentation*; D012666:Semiconductors; D014962:X-Ray Film