Effects of mechanical ventilation and portable air cleaner on aerosol removal from dental treatment rooms.
Effects of mechanical ventilation and portable air cleaner on aerosol removal from dental treatment rooms.
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机械通风及手提式空气净化器对牙科诊疗室气溶胶清除之影响。
DOI：
10.1016/j.jdent.2020.103576
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发表时间：
2021-03
影响因子：
4.4
通讯作者：
Eliav E
中科院分区：
文献类型：
--
作者：
Ren YF;Huang Q;Marzouk T;Richard R;Pembroke K;Martone P;Venner T;Malmstrom H;Eliav E
评估牙科治疗室的机械通风率，并评估机械通风和带有高效颗粒空气 (HEPA) 过滤器的便携式空气净化器 (PAC) 去除气溶胶的有效性。测量体积气流以评估通风每小时的换气率（ACHvent）。 PAC (ACHpac) 提供的等效通风量是根据其清洁空气输送率计算的。在 10 个不同通风率的牙科治疗室中，在基线、焚香 5 分钟后以及在运行和不运行 PAC 或通风系统的情况下观察 30 分钟后，测量了 0.3、0.5 和 1.0 μm 气溶胶颗粒的浓度。通过单独通气 (Kn) 和通气加 PAC (Kn+pac) 时 0.3 μm 颗粒的浓度衰减常数以及达到去除累积气溶胶颗粒 95% 和 100% 所需的时间来评估气溶胶去除速度。 ACHvent 从 3 到 45 不等。Kn 和 Kn+pac 分别与 ACHvent (r = 0.90) 和组合 ACHtotal (r = 0.81) 相关。在 ACHvent<15 的房间内，仅通过通风无法在 30 分钟内去除累积的气溶胶颗粒。 PAC减少了气溶胶的积累并加速了气溶胶的清除，通气与PAC相结合可在4至12分钟内完全清除积累的气溶胶。 PAC 的有效性在通风不良的房间中尤其突出。 PAC 在气溶胶去除方面的附加效益与 ACHvent 呈负相关。通风不良的牙科治疗室可能会发生气溶胶积聚。添加 PAC 和 HEPA 过滤器可显着减少气溶胶积聚并加速气溶胶去除。添加 PAC 和 HEPA 过滤器可改善通风率较低的房间内的气溶胶去除效果。
To evaluate the mechanical ventilation rates of dental treatment rooms and assess the effectiveness of aerosol removal by mechanical ventilation and a portable air cleaner (PAC) with a high-efficiency particulate air (HEPA) filter. Volumetric airflow were measured to assess air change rate per hour by ventilation (ACHvent). Equivalent ventilation provided by the PAC (ACHpac) was calculated based on its clean air delivery rate. Concentrations of 0.3, 0.5 and 1.0 μm aerosol particles were measured in 10 dental treatment rooms with various ventilation rates at baseline, after 5-min of incense burn, and after 30-min of observation with and without the PAC or ventilation system in operation. Velocities of aerosol removal were assessed by concentration decay constants for the 0.3 μm particles with ventilation alone (Kn) and with ventilation and PAC (Kn+pac), and by times needed to reach 95 % and 100 % removal of accumulated aerosol particles. ACHvent varied from 3 to 45. Kn and Kn+pac were correlated with ACHvent (r = 0.90) and combined ACHtotal (r = 0.81), respectively. Accumulated aerosol particles could not be removed by ventilation alone within 30-min in rooms with ACHvent<15. PAC reduced aerosol accumulation and accelerated aerosol removal, and accumulated aerosols could be completely removed in 4 to 12-min by ventilation combined with PAC. Effectiveness of the PAC was especially prominent in rooms with poor ventilation. Added benefit of PAC in aerosol removal was inversely correlated with ACHvent. Aerosol accumulation may occur in dental treatment rooms with poor ventilation. Addition of PAC with a HEPA filter significantly reduced aerosol accumulation and accelerated aerosol removal. Addition of PAC with a HEPA filter improves aerosol removal in rooms with low ventilation rates.
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影响因子：
1.9
作者：
Al-Rawi, Natheer H.;Al Nuaimi, Ahmed S.;Abbas, Zeyad
通讯作者：
Abbas, Zeyad
基于标准和传输的预防措施：牙科的更新。
DOI：
10.14219/jada.archive.2010.0232
发表时间：
2010-05
期刊：
Journal of the American Dental Association (1939)
影响因子：
--
作者：
Harte JA
通讯作者：
Harte JA
影响因子：
5.2
作者：
CHENG, YS;BECHTOLD, WE;HUNG, IF
通讯作者：
HUNG, IF
影响因子：
3
作者：
Al-Omoush, Salah A.;Abdul-Baqi, Khader J.;Jamani, Kifah D.
通讯作者：
Jamani, Kifah D.
影响因子：
--
作者：
Aliabadi AA;Rogak SN;Bartlett KH;Green SI
通讯作者：
Green SI