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toothpowder

美英

复数：tooth powders

toothpowder

牙_互动百科 ... 牙雕〖 ivorycarving〗牙粉〖 toothpowder〗牙缝,牙缝儿〖 diastema;chinkbetweentheteeth〗 ...

The rich applied toothpowder with a brush . The poor cleaned their teeth with bicarbonate of soda , using their fingers.

A dentist called Peabody became the first person to add soap to toothpowder in 1824 and chalk was added in the 1850s by John Harris .