Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil.
Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil.
Oral Surg Oral Med Oral Pathol Oral Radiol. 2023 Apr;135(4):539-547. doi: 10.1016/j.oooo.2022.11.004. Epub 2022 Nov 11.
The aim of this study was to evaluate the influence of the extensive use of a photostimulable phosphor (PSP) receptor on the diagnosis of proximal carious lesions.
Forty posterior teeth were paired and mounted in 20 phantoms. Using a PSP receptor of the Express intraoral system, 1 radiograph of each phantom was acquired, totaling 20 radiographs (group 1). After 400 acquisitions, another radiograph of each phantom was obtained, totaling 20 new radiographs (group 2). This procedure was also done after 800 (group 3), 1,200 (group 4), and 1,600 (group 5) acquisitions, resulting in 100 radiographs. Another 40 radiographs (20 phantoms × 2 groups) were obtained with a second PSP sensor to evaluate the diagnostic replicability of the receptors. All 140 radiographs were assessed independently by 5 examiners for the presence of proximal caries. Area under the receiver operating characteristic curve, sensitivity, and specificity were calculated and compared among the groups by analysis of variance. The Student t test evaluated the diagnostic replicability of the receptors. The significance level was set at 5% (P < .05).
The diagnostic outcomes for proximal caries did not differ among the groups (P ≥ .37). The diagnostic values did not differ among the radiographs acquired with the 2 PSP receptors (P ≥ .75).
The diagnosis of proximal carious lesions was not affected by extensive use of the PSP receptor.
本研究旨在评估广泛使用光激励磷光体（PSP）接收器对诊断近中龋损的影响。
将 40 颗后牙配对并安装在 20 个体模中。使用 Express 口内系统的 PSP 接收器，对每个体模拍摄 1 张射线照片，共拍摄 20 张射线照片（第 1 组）。在进行 400 次采集后，对每个体模再拍摄 1 张射线照片，共获得 20 张新射线照片（第 2 组）。在进行 800 次（第 3 组）、1200 次（第 4 组）和 1600 次（第 5 组）采集后，也进行了同样的操作，共获得 100 张射线照片。使用第二个 PSP 传感器获得另外 40 张射线照片（20 个体模×2 组），以评估接收器的诊断可重复性。由 5 名检查者独立评估所有 140 张射线照片，以评估近中龋的存在。通过方差分析计算并比较各组的受试者工作特征曲线下面积、敏感度和特异度。使用 Student t 检验评估接收器的诊断可重复性。显著性水平设为 5%（P<0.05）。
各组之间的近中龋诊断结果无差异（P≥0.37）。用两种 PSP 接收器获得的射线照片的诊断值无差异（P≥0.75）。
广泛使用 PSP 接收器不会影响近中龋损的诊断。
