Hubar J Sean, Pelon William
Department of Oral Diagnosis, Medicine, and Radiology, School of Dentistry, Louisiana State University Health Sciences Center, New Orleans, USA.
Gen Dent. 2005 Jul-Aug;53(4):270-2.
It has been reported that aerosols and droplets generated by high-speed dental drills and cavitrons are contaminated with blood and bacteria and represent a potential route for transmitting disease. Bacterial cells possess a negative electrical charge, while the cathode ray tubes (CRT) that are used in computer monitors generate positively charged static electric fields. Consequently, bacteria dispersed within these aerosols could be attracted to the screens on CRT monitors. In this study, pathogenic strains of Staphylococcus aureus were found on CRT screens in different locations within the Louisiana State University School of Dentistry facility. The results suggest that surveying CRT screens is a simple method for evaluating the airborne microbial contaminants present within a dental office.
据报道，高速牙科钻和超声洁牙机产生的气溶胶和飞沫会被血液和细菌污染，是疾病传播的潜在途径。细菌细胞带负电荷，而电脑显示器中使用的阴极射线管（CRT）会产生带正电荷的静电场。因此，分散在这些气溶胶中的细菌可能会被CRT显示器的屏幕吸引。在这项研究中，在路易斯安那州立大学牙科学院设施内不同位置的CRT屏幕上发现了金黄色葡萄球菌的致病菌株。结果表明，检测CRT屏幕是评估牙科诊所内空气传播微生物污染物的一种简单方法。
