toothbrushes weren't invented then!
toothbrush was invented in the year 1939
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Many, many countries make toothbrushes.
They did not invent tooth brushes in the late 1400 because toothpaste wasn't invented then! They used there fingers to wash they teeth with water
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Yes, peanut butter people can eat toothbrushes.
Toothbrushes for dogs come in a variety of colors. My dog's toothbrush is blue.
Any toothbrush is only as effective as the person using it. If used properly, most manual toothbrushes can adequately clean your mouth. I typically recommend electric toothbrushes to people who have some kind of physical limitation, such as arthritis.
It is difficult to provide an exact number, but it is estimated that there are billions of toothbrushes used around the world. This number is constantly changing as toothbrushes are manufactured, sold, and disposed of.
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