Bicarbonate of soda was used as the basis for most toothpowders, and some contained other ingredients that would not be considered appropriate today, such as sugar.
大多数的牙粉将小苏打用作基础原料，还有一些牙粉含有诸如糖精等在今天看来不适宜采用的成分。
2
Few records related to toothpaste or powder then exist, until around 1000 AD when the Persians wrote to advise their people to be wary of the dangers1 of using hard abrasives as toothpowders.