There are a variety of ingredients used in toothpaste to help prevent the accumulation of tartar on the teeth.

牙膏配方中加入了很多成分来防止牙垢的累积。

youdao

Cambara remembers his gums bleeding prolifically and receding wastefully at a phenomenal rate, the inflammation, combined with the irritation on account of the tartar deposits, causing the loosening of several of his teeth.

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