Abreu M, Mol A, Ludlow J B
Department of Stomatology, School of Dentistry, Federal University of Santa Catarina, Florianopolis, Brazil.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2001 Mar;91(3):381-5. doi: 10.1067/moe.2001.112393.
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.
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.
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).
The performance of the RVGui sensor in high- and low-resolution modes for proximal caries detection is comparable to that of Ektaspeed Plus film.
使用高分辨率电荷耦合器件比较Trophy新型RVGui传感器和柯达Ektaspeed Plus胶片在龋齿检测方面的诊断性能。
将Trophy RVGui传感器的三种采集模式与柯达Ektaspeed Plus胶片进行比较。6名观察者对40颗拔除后牙的邻面图像进行评估。通过5分置信度量表对龋齿的有无进行评分。通过磨片组织学确定每个表面的实际龋齿状况。通过受试者工作特征分析评估反应。通过方差分析评估受试者工作特征曲线下的面积（A(Z)）。
胶片的平均A(Z)评分为0.85，高分辨率龋齿模式为0.84，低分辨率龋齿模式和高分辨率牙周模式均为0.82。这些差异无统计学意义（P = 0.70）。观察者之间的差异也无统计学意义（P = 0.23）。
RVGui传感器在高分辨率和低分辨率模式下检测邻面龋齿的性能与Ektaspeed Plus胶片相当。
