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Discovery
of the Microorganisms within the Dental Plaque by Anton van Leeuwenhoek (1632-1723) |
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Excerpt from one of his letters sent to royal Society
of London: “Tho my teeth are kept
usually very clean, nevertheless when I view them in a Magnifying glass,
I find growing between them a little white matter as thick as wetted flower…
I therefore took some of this flower and mixt it … with pure rain
water whererein were no Animals … and then to my great surprize
perceived that the aforesaid matter contained very small living Animals,
which moved themselves very extravagantly … The number of these
Animals in the scurf of a mans Teeth, are so many that I believe they
exceed the number of Men in a Kingdom. For upon the examination of a small
parcel of it, no thicker than a Horse-hair, I found too many living Animals
therein, that I guess there might have been 1000 in a quantity of matter
no bigger than the 1/100 part of a sand.” |
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