论文标题
真实牙科办公室中空气颗粒浓度的原位测量：对疾病传播的影响
In situ Measurement of Airborne Particle Concentration in a Real Dental Office: Implications for Disease Transmission
论文作者
论文摘要
最新的指导方针建议在COVID-19-19的大流行中延迟非必需的口腔保健，并呼吁研究牙科手术过程中产生的气溶胶。因此，本研究旨在评估牙科办公室中牙齿气溶胶分散体的机制，并根据定量研究提供建议，以最大程度地减少牙科办公室的感染传播。在牙科办公室的牙科手术中产生的气溶胶颗粒的扩散和去除是在办公室和办公室的拐角处测量的。我们研究了空气纯化（ON/关），门状况（开/关闭）以及粒径对颗粒的时间浓度分布的影响。结果表明，在最糟糕的情况下，0.5 um颗粒沉降需要95分钟，并且较大的颗粒需要较短的时间。室内空气净化器测试的速度加快了拆卸时间的速度，至少比场景空气净化器快6.3倍。即使生成区域的颗粒浓度恢复到背景水平，空气传播的颗粒也可以从源到整个房间的其余部分。预计这些结果对于牙科办公室和类似的建筑环境中的感染疾病控制的相关政策制定和技术开发有价值。
Recent guidelines by WHO recommend delaying non-essential oral health care amid COVID-19 pandemic and call for research on aerosol generated during dental procedures. Thus, this study aims to assess the mechanisms of dental aerosol dispersion in dental offices and to provide recommendations based on a quantitative study to minimize infection transmission in dental offices. The spread and removal of aerosol particles generated from dental procedures in a dental office are measured near the source and at the corner of the office. We studied the effects of air purification (on/off), door condition (open/close), and particle sizes on the temporal concentration distribution of particles. The results show that in the worst-scenario scenario it takes 95 min for 0.5 um particles to settle, and that it takes a shorter time for the larger particles. The indoor air purifier tested expedited the removal time at least 6.3 times faster than the scenario air purifier off. Airborne particles may be transported from the source to the rest of the room, even when the particle concentrations in the generation zone return to the background level. These results are expected to be valuable to related policy making and technology development for infection disease control in dental offices and similar built environments.
