Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, SP, 13414-903, Brazil.
Dentomaxillofac Radiol. 2024 Nov 1;53(8):542-548. doi: 10.1093/dmfr/twae046.
To evaluate the antimicrobial efficacy of white vinegar, acetic acid, and peracetic acid on photostimulable phosphor (PSP) plates disinfection, and to assess the disinfectant influence on the radiographic quality.
Eight PSP plates (Express system) were contaminated with Streptococcus mutans and Candida albicans. These plates were wiped with tissues without any substance, with white vinegar, acetic acid, and peracetic acid, followed by an agar imprint. Number of microbial colonies formed was recorded. Afterwards, the quality of radiographs was tested using the more efficient disinfectant. Before disinfection and after every five disinfections, two radiographs of an acrylic-block and two radiographs of an aluminium step-wedge were acquired for each plate. Density, noise, uniformity, and contrast were analysed. Three oral radiologists evaluated the images for the presence of artefacts. One-way analysis of variance compared changes on grey values among the disinfections (α = .05). Intra- and inter-examiner agreement for the presence of artefacts was calculated by weighted Kappa.
Peracetic acid was the only one that eliminated both microorganisms. Density and uniformity decreased after 100 disinfections, and contrast changed without a pattern in the course of disinfections (P ≤ .05). Small artefacts were observed after 30 disinfections. Intra- and inter-examiner agreements were almost perfect.
Disinfection with peracetic acid eliminated both microorganisms. However, it also affected density, uniformity, and contrast of radiographs, and led to the formation of small artefacts.
评估白醋、醋酸和过氧乙酸对光激励磷（PSP）板消毒的抗菌效果，并评估消毒剂对射线照相质量的影响。
将 8 个 PSP 板（Express 系统）用变异链球菌和白色念珠菌污染。用无任何物质的纸巾擦拭这些板，然后用白醋、醋酸和过氧乙酸擦拭，再用琼脂印迹。记录形成的微生物菌落数量。然后，使用更有效的消毒剂测试射线照相的质量。在消毒之前和每五次消毒之后，为每个板获取一个丙烯酸块的两个射线照片和一个铝阶梯的两个射线照片。分析密度、噪声、均匀性和对比度。三位口腔放射科医生评估图像是否存在伪影。单因素方差分析比较了消毒过程中灰度值的变化（α=0.05）。使用加权 Kappa 计算存在伪影的观察者内和观察者间一致性。
只有过氧乙酸能同时消灭这两种微生物。经过 100 次消毒后，密度和均匀性降低，对比度在消毒过程中没有规律地变化（P≤0.05）。经过 30 次消毒后，会观察到小的伪影。观察者内和观察者间的一致性几乎是完美的。
过氧乙酸消毒可以消灭两种微生物。然而，它也会影响射线照相的密度、均匀性和对比度，并导致小伪影的形成。
