Tooth decay can cause tooth pain.

蛀牙会导致牙齿疼痛。

Eating too much sugar can lead to tooth decay.

吃太多糖会导致蛀牙。

She went to the dentist because of tooth decay.

她因为蛀牙去看了牙医。

The dentist found that I have a tooth decay.

牙医发现了我有一颗蛀牙。

The water supply is treated with fluor to prevent tooth decay.

供水系统中添加了氟以防止蛀牙。

Fluorinated water is used in some regions to prevent tooth decay.

一些地区使用含氟水来预防蛀牙。

The best way to prevent tooth decay is to brush and floss.

预防蛀牙的最好方法是刷牙和使用牙线。

Tooth decay can reach the dentin if not treated in time.

如果不及时治疗，蛀牙可能会侵蚀到牙本质。

How does tooth decay happen?

为什么会蛀牙呢？

How does tooth decay hinstanceen?

为何会蛀牙？