Aerosol generating procedures: minimising production during dental procedures

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This Cochrane rapid review of the effectiveness of methods used during dental treatment procedures to minimize aerosol production and reduce or neutralize contamination in aerosols. While the studies suggest a reduction in the levels of bacterial contamination the quality of the studies means the evidence is of low certainty.

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Aerosol generating procedures (AGPs) and their mitigation in international guidelines: Fallow time

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Mark-Steven Howe takes a look at the fallow times reported in the recently published rapid review of international guidelines, the precautionary principle and the Independent Action Hypothesis (IAH).

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Aerosol and Surface Stability of SARS-CoV-2

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Manas Dave summarises a recent study on the stability of SARS-CoV-2 and SARS-CoV-1 in aerosols. The findings show that the virus remains viable and survives on a number of different surfaces.

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FFP3 fit testing accuracy and Covid-19 prevalence update

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In another of his series of blogs on Covid-19 Mark-Steven Howe looks at the latest data on prevalence from the Office of National Statistics (ONS) and data on the fit testing of FFP3 masks.

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Face shield studies and droplet contamination

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In another of his Covid-19 related blogs Mark-Steven Howe looks at the effectiveness of face shields for preventing droplet contamination.

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The tyranny of average and guideline development for PPE

The reviewers identified researchers found it difficult to control for variation

In this opinion piece Mark-Steven Howe considered the challenges of basing decisions on of average values for decision making when infection is not evenly distributed either geographically nor demographically

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What is the most appropriate gown/apron for preventing Covid-19 contaminated fluids transfer in dental practice?

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Mark-Steven Howe reanalyses a recent Cochrane review on personal protective equipment focusing on the evidence from a primary care rather than secondary care perspective.

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How much extra protection does an FFP3 mask offer in the dental surgery?

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This rapid review suggests that in the clinical environment where high volume aspiration and rubber dam is in use during dental AGP procedures there may be no significant additional benefit in wearing an FFP3/FFP2 or surgical mask.

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