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Chewing sticks were what people used by the people because nobody had toothbrushes yet.
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The first toothbrush with bristles was made in China out of animal bone, bamboo, and hog hair. The bristles werre super hard.
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The first toothbrush with synthetic bristles appeared on the market. Lots of people preffered this beccause of the softer bristles and that it was more sanitary.
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The first electric toothbrush was invented in Switzerland.
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The water pick was invented in the 1960's and the inventor died at age 79.
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The first rotary action electric toothbrush was designed and sold by the company Interplax.
