Department of Oral and Maxillofacial Radiology, School of Dentistry, Ege University, Izmir, Turkey.
Oral Surg Oral Med Oral Pathol Oral Radiol. 2012 Nov;114(5):e78-84. doi: 10.1016/j.oooo.2012.05.021. Epub 2012 Sep 12.
The aim of this study was to compare the diagnostic accuracy of F-speed film and storage phosphor plate (SPP) exposed with different exposure times for the detection of artificial enamel subsurface demineralization.
Standard enamel windows of extracted premolars were exposed to a demineralizing solution. All teeth were radiographed before and after acid application with F-speed films and SPPs. Films were exposed for 0.25 seconds and SPPs were exposed using 4 exposure times. Receiver operating characteristic analysis was used for diagnostic accuracy (A(z)).
Significant differences were obtained among A(z)s of 0.08- versus 0.12-seconds and 0.10- versus 0.12-second exposed SPPs (P < .05). A(z)s of films were higher than the SPPs exposed with 0.08, 0.10, and 0.12 seconds (P < .05). No difference was found between the A(z)s of the 2 systems when SPPs were exposed for 0.16 seconds (P > .05).
Diagnostic accuracy of films and SPPs was not impaired when exposure time was 36% reduced for the latter; however, diagnosis was impaired when reduced 52%.
本研究旨在比较不同曝光时间的 F 速度胶片和存储磷光板（SPP）检测人工釉质表面下脱矿的诊断准确性。
从离体前磨牙中制取标准釉质窗，将其暴露于脱矿溶液中。所有牙齿在酸应用前后均使用 F 速度胶片和 SPP 进行拍摄。胶片曝光 0.25 秒，SPP 使用 4 种曝光时间进行曝光。使用接收者操作特征分析评估诊断准确性（A（z））。
0.08 秒与 0.12 秒以及 0.10 秒与 0.12 秒曝光的 SPP 之间的 A（z）差异具有统计学意义（P <.05）。曝光 0.08、0.10 和 0.12 秒的 SPP 的 A（z）均低于胶片（P <.05）。当 SPP 曝光 0.16 秒时，两种系统的 A（z）之间无差异（P >.05）。
当 SPP 的曝光时间减少 36%时，其诊断准确性不受影响；然而，当减少 52%时，诊断准确性会受损。
