强力吸引和空气消毒机对气溶胶清除的效果。
Effect of forceful suction and air disinfection machines on aerosol removal.
机构信息
Department of hospital allergy, Medical department, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, PR China.
Department of Periodontal I, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, PR China.
出版信息
BMC Oral Health. 2023 Sep 8;23(1):652. doi: 10.1186/s12903-023-03369-1.
BACKGROUNDS
Dental procedures involving drilling and grinding can produce a significant amount of suspended aerosol particles (PM) and bioaerosols. This study aims to analyze the size and concentration of aerosol particles generated during drilling and to investigate the effectiveness of two air exchange systems, namely forceful suction (FS) and air disinfection machines (DM), in removing PM.
METHODS
For this study, 100 extracted permanent teeth were collected and divided into three groups: without suction (n = 50), suction with forceful suction (n = 25), and suction with air disinfection machines (n = 25). The removal rate of suspended aerosol particles was analyzed using particle counters and air data multimeter.
RESULTS
When drilling and grinding were performed without vacuum, 0.75% of the aerosol particles generated were PM2.5-10, 78.25% of total suspended aerosol particles (TSP) were PM2.5, and 98.68% of TSP were PM1. The nanoanalyzer measurements revealed that the aerodynamic diameter of most aerosol particles was below 60 nm, with an average particle diameter of 52.61 nm and an average concentration of 2.6*10 ultrafine aerosol particles. The air change per hour (ACH) was significantly lower in the air disinfection machines group compared to the forceful suction group. Additionally, the number of aerosol particles and mass concentration was significantly lower in the air disinfection machines group compared to the forceful suction group in terms of PM2.5 levels. However, the forceful suction group also reduced the mass concentration in PM10 level than the air disinfection machines group.
CONCLUSION
In conclusion, the air exchange system can reduce the aerosol particles generated during drilling and grinding. Comparing the two air exchange systems, it was found that the air disinfection machines group reduces the number of aerosol particles and mass concentration in PM2.5 levels, while the forceful suction group reduces the mass concentration in PM10 level.
背景
涉及钻磨的牙科操作会产生大量悬浮气溶胶颗粒（PM）和生物气溶胶。本研究旨在分析钻磨过程中产生的气溶胶颗粒的大小和浓度，并研究两种空气交换系统，即强力抽吸（FS）和空气消毒机（DM），在去除 PM 方面的效果。
方法
在这项研究中，收集了 100 颗已提取的恒牙并将其分为三组：无抽吸组（n=50）、强力抽吸组（n=25）和空气消毒机抽吸组（n=25）。使用粒子计数器和空气数据万用表分析悬浮气溶胶颗粒的去除率。
结果
在没有真空的情况下进行钻磨操作时，生成的气溶胶颗粒中 0.75%为 PM2.5-10，总悬浮气溶胶颗粒（TSP）中 78.25%为 PM2.5，TSP 中 98.68%为 PM1。纳米分析器测量结果表明，大多数气溶胶颗粒的空气动力学直径低于 60nm，平均粒径为 52.61nm，平均浓度为 2.6*10 个超细微气溶胶颗粒。与强力抽吸组相比，空气消毒机组的空气每小时交换次数（ACH）显著较低。此外，在 PM2.5 水平方面，空气消毒机组的气溶胶颗粒数量和质量浓度均明显低于强力抽吸组。然而，与空气消毒机组相比，强力抽吸组也降低了 PM10 水平的质量浓度。
结论
综上所述，空气交换系统可以减少钻磨过程中产生的气溶胶颗粒。比较两种空气交换系统，发现空气消毒机组降低了 PM2.5 水平的气溶胶颗粒数量和质量浓度，而强力抽吸组降低了 PM10 水平的质量浓度。
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