Toothpaste Goes Way Back

As far back as 4 AD, Egyptians mixed crushed rock salt, mint, dried iris flower and pepper to fashion the world’s first documented toothpaste.

Today we know a lot more know about oral health, and toothpaste has advanced accordingly, earning it a spot on the 100 Objects That Shaped Public Health. The discovery of fluoride’s role led to Procter & Gamble’s introduction of Crest in 1955, for example. Now, more than 95% of all toothpaste sold in the US contains fluoride.

Check GHN every Wednesday for an up-close look at one of the objects that made the list published by the Johns Hopkins Bloomberg School of Public Health.

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