This is an enlarged photo of the bristle of a toothbrush.
On the bristles of usual toothbrushes, many bacteria grow after being used.
It is said that more than 10 million bacteria exist on a toothbrush.
To prevent the bacterial growth, toothbrush should be washed well and dried as much as possible.
And better way to prevent it is to try our anti-bacterial toothbrush with platinum nanoparticles.
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