Fallow time determination in dentistry using aerosol measurement in mechanically and non-mechanically ventilated environments

Abstract

AGPs can be carried out in open bay environments with a minimum of six air changes per hour of mechanical ventilation.Four-handed dentistry with high-volume suction and a saliva ejector are essential mitigating factors during AGPs.

Occupational hazards among dental hygienists: Risk level assessment of scaling work

“…35 A study by Noordien et al (2021) reported that aerosol contamination among dental professionals was reduced by 53% when a high-volume evacuator and a low-volume saliva ejector were used together compared to when only a low-volume saliva ejector was used. 36 A study by Shahdad et al (2021) investigated the level of aerosol particle counts 1 h after dental aerosol-generating procedures (AGPs), such as scaling operations, and found that the number of particles decreased by opening the window and using mechanical ventilation after AGP. 37 In the case of physical hazards, 27.8% of participants were at high risk and 51.5% were at medium risk, with 46.8% found to be high-risk individuals of "musculoskeletal pain," the highest among all items (Figure 2).…”

“…36 A study by Shahdad et al (2021) investigated the level of aerosol particle counts 1 h after dental aerosol-generating procedures (AGPs), such as scaling operations, and found that the number of particles decreased by opening the window and using mechanical ventilation after AGP. 37 In the case of physical hazards, 27.8% of participants were at high risk and 51.5% were at medium risk, with 46.8% found to be high-risk individuals of "musculoskeletal pain," the highest among all items (Figure 2). As a dental hygienist is an occupation with a high risk of musculoskeletal pain, 38,39 repetitive and static scaling works put a strain on the muscles and joints of the worker.…”

Reducing microbial airborne contamination and particulate matter using different oral suctions in dental clinic: A randomized controlled clinical trial

“…However, it is not suitable to be used in all procedures and some patients ( Matys and Grzech-Leśniak, 2020 ). There were some studies evaluating the influence of EOS, and they found EOS was effective in reducing droplets ( Chavis et al, 2021 , Ehtezazi et al, 2021 , Graetz et al, 2021 , Makhsous et al, 2021 , Senpuku et al, 2021 , Shahdad et al, 2021 , Yang et al, 2021 ). A vitro study showed using IOS was effective by 88 % in reducing aerosol compared to other groups.…”

“…Also, they found using high and low suction minimized the aerosol level, and EOS reduced it further down the baseline reading ( Yang et al, 2021 ). However, most of these study ( Chavis et al, 2021 , Ehtezazi et al, 2021 , Graetz et al, 2021 , Shahdad et al, 2021 , Yang et al, 2021 ) was performed in vitro but still it is need more investigations in vivo.…”

Study of aerosol dispersion and control in dental practice

“…Methods used to minimize the spread of bacteria, viruses, and aerosols in dental practice include preoperative mouth gargling, rubber-barrier isolation, and the use of personal protective equipment, air filtration equipment, and mechanical ventilation [13][14][15][16][17], which all reduce the production and spread of aerosols, but are less efficient at removing aerosols. It has also been shown that aerosols spread quickly and in high concentrations in relatively closed oral treatment rooms [7], so it is urgent to study the dispersion and adsorption of aerosols generated during the oral treatment procedures.…”