There is good evidence that a small-headed counter oscillating electric toothbrush helps in removing dental plaque but they must be used correctly and your dentist or hygienist will advise.

很多研究证据表明使用小头反震荡电动牙刷有助于去除牙菌斑，但使用方式要正确并遵循牙医或牙科保健员的建议。

Plaque

牙菌斑

Plaque is a sticky film of bacteria that covers your teeth and gums.

牙菌斑是覆盖在牙齿和牙龈上的一层顽固细菌。

It develops constantly and you clean it off every day when you brush your teeth.

并会不断增长，你需要在每天刷牙时清除掉这些菌斑。

Certain harmful oral bacteria feed on the sugars you eat to create acids that destroy the tooth enamel.

你摄入的糖分会“滋养”一些有害的口腔细菌，并产生有害牙釉质的酸类物质。

Cavities are a bacterial infection created by acids, that cause your teeth to experience a hole in them.

龋洞就是细菌侵蚀的表现，酸类物质会导致牙齿上逐渐出现孔洞。

The more sugar you eat, the more acid you will create in your mouth, and the more acidic attacks your teeth are exposed to, the higher the risk of developing tooth decay.

你摄入的糖越多，你口腔里产生的酸类物质也就越多，牙齿也会随之遭受更严重的酸性侵蚀，造成蛀牙的几率也会更大。