Evaluating contaminated dental aerosol and splatter in an open plan clinic environment: Implications for the COVID-19 pandemic.
Evaluating contaminated dental aerosol and splatter in an open plan clinic environment: Implications for the COVID-19 pandemic.
复制标题
DOI：
10.1016/j.jdent.2020.103565
复制
发表时间：
2021-03
影响因子：
4.4
通讯作者：
Jakubovics N
中科院分区：
文献类型：
--
作者：
Holliday R;Allison JR;Currie CC;Edwards DC;Bowes C;Pickering K;Reay S;Durham J;Lumb J;Rostami N;Coulter J;Nile C;Jakubovics N
在开放式诊所中识别牙科手术中的飞溅物/气溶胶分布，并探索牙科手术后的气溶胶沉降时间。在两个实验设计中，在人体模型上使用模拟牙科手术，荧光素染料被引入：（1）进入空气涡轮手机的冲洗系统;（2）进入人体模型的口腔。将滤纸放置在开放式诊所中以收集荧光素。一个直径8米的装置被用来研究气溶胶沉降时间。通过荧光照相术和荧光分光光度法进行分析。污染分布在整个诊所根据条件而变化。未经缓解的程序有可能使污染物存款到很远的地方。中等容量的牙科抽吸（159 L/min空气）将手术间的污染减少了53%，将其他区域的污染减少了81- 83%。低容量吸引（40 L/min空气）相似。交叉通风将邻近和远处区域的污染减少了80- 89%。在最真实的模型中（口腔中的荧光素，中等容量抽吸），远处隔间（头对头椅距离≥5 m）中的样本读数非常低或为零（< 0.0016%的手术期间使用的荧光素）。几乎所有（99.99%）检测到的飞溅物都保留在手术间/走道内。10分钟后，非常少的额外气溶胶沉降。在开放式诊所中，当间隔≥ 5 m时，牙科手术的交叉感染风险似乎很小。观察到器械喷水的稀释效果，牙科抽吸是有益的。大多数沉降的气溶胶在10分钟内被检测到，表明在此之后环境清洁可能是适当的。临床意义：牙科手术产生的气溶胶有可能污染远处的站点，大多数沉降的气溶胶在10分钟后即可检测到。牙科抽吸和通风具有显著的有益效果。在距离5米或更远的开放式诊所中，污染可能最小。
Identify splatter/aerosol distribution from dental procedures in an open plan clinic and explore aerosol settling time after dental procedures. In two experimental designs using simulated dental procedures on a mannequin, fluorescein dye was introduced: (1) into the irrigation system of an air-turbine handpiece; (2) into the mannequin's mouth. Filter papers were placed in an open plan clinic to collect fluorescein. An 8-metre diameter rig was used to investigate aerosol settling time. Analysis was by fluorescence photography and spectrofluorometry. Contamination distribution varied across the clinic depending on conditions. Unmitigated procedures have the potential to deposit contamination at large distances. Medium volume dental suction (159 L/min air) reduced contamination in the procedural bay by 53%, and in other areas by 81-83%. Low volume suction (40 L/min air) was similar. Cross-ventilation reduced contamination in adjacent and distant areas by 80-89%. In the most realistic model (fluorescein in mouth, medium volume suction), samples in distant bays (≥5 m head-to-head chair distance) gave very low or zero readings (< 0.0016% of the fluorescein used during the procedure). Almost all (99.99%) of the splatter detected was retained within the procedural bay/walkway. After 10 min, very little additional aerosol settled. Cross-infection risk from dental procedures in an open plan clinic appears small when bays are ≥ 5 m apart. Dilution effects from instrument water spray were observed, and dental suction is of benefit. Most settled aerosol is detected within 10 min indicating environmental cleaning may be appropriate after this. Clinical Significance: Aerosols produced by dental procedures have the potential to contaminate distant sites and the majority of settled aerosol is detectable after 10 min. Dental suction and ventilation have a substantial beneficial effect. Contamination is likely to be minimal in open plan clinics at distances of 5 m or more.
登录
查看更多内容
影响因子：
7.6
作者：
MILLER, RL;MICIK, RE;RYGE, G
通讯作者：
RYGE, G
评估两种干场隔离技术的飞溅还原有效性。
DOI：
10.14219/jada.archive.2012.0064
发表时间：
2012-11
期刊：
Journal of the American Dental Association (1939)
影响因子：
--
作者：
Dahlke WO;Cottam MR;Herring MC;Leavitt JM;Ditmyer MM;Walker RS
通讯作者：
Walker RS
影响因子：
2.6
作者：
Llandro H;Allison JR;Currie CC;Edwards DC;Bowes C;Durham J;Jakubovics N;Rostami N;Holliday R
通讯作者：
Holliday R
影响因子：
2.9
作者：
Allison JR;Currie CC;Edwards DC;Bowes C;Coulter J;Pickering K;Kozhevnikova E;Durham J;Nile CJ;Jakubovics N;Rostami N;Holliday R
通讯作者：
Holliday R
影响因子：
5.1
作者：
Kobza, J.;Pastuszka, J. S.;Bragoszewska, E.
通讯作者：
Bragoszewska, E.