[dufekin]

Nope. Actually, the "toothbrush" was invented in China c.1497. The Chinese language makes no distinction between singular and plural; hence, "tooth" translates to the exact same Chinese word as "teeth."

[Wilhelm Tell]

Nope. Actually, the "toothbrush" was invented in China c.1497

I didn't know that. Another Chinese invention. The Chinese were technologically ahead of everyone until 1500 or so and Europe began to surpass them. Around this same time, they had huge sailing ships -- actually container ships -- the hull was divided into watertight sections, something not tried again until the 19th century.