Sometimes things happen that make you believe in miracles. When Corona breaks out in China at the beginning of the year, it particularly affects doctors and nurses. On February 25, the virus had only had a name for two weeks, more than 3,000 were infected nationwide. Many have been infected by patients. But dentists of all people are spared. They are considered to be particularly at risk. Their high-speed drills generate masses of aerosol clouds. Microscopic droplets full of viruses and bacteria. And because they are so light, they stay in the room for hours thanks to thermal buoyancy and the slightest turbulence. There can be tens of thousands of pathogens in one cubic meter of air in a dental practice.
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