Fluoride and teeth, compression and engines, X-rays and bone health or telegraph and wiring.

氟化物和牙齿，压缩和发动机，x 光和骨骼健康或电报和布线。

And for every liter of it, there is 0.8mg of fluoride in it.

每升含有 0.8 毫克的氟化物。

The new standard would limit that to 0.7 milligrams of fluoride per liter.

新规定则将氟含量限值降低为每公升0.7毫克。

So there are some restrictions for fluoride.

氟化处理有一些限制。

In most toothpastes and many water supplies, we use tiny amounts of fluoride.

除了降低糖和淀粉的摄取量，在大多数的牙膏和饮用。

A reservoir with more dreams...and less fluoride.

一个拥有更多梦想......更氟化物的库。

The water contains chemicals from the ground – including fluoride.

含有来自地下的化物质，包括氟。

Putting fluoride in the water has long fueled conspiracy theories.

在添加氟化物长期以来引发了许多阴谋论。

Adding fluoride to the water makes teeth resistant to the bacteria that can cause tooth decay.

向添加氟能使牙齿能抵抗导致蛀牙的细菌。

And they are quick to note that regular cleaning with fluoride toothpaste helps prevent cavities in the first place.

而且他们很快提醒大家，经常使用含氟牙膏刷牙有助于从最初就防止蛀牙。

Dentists can help by giving you a fluoride treatment, but you have to brush and floss regularly.

医生还可以为你做氟化物治疗（在蛀牙部位涂上高浓度的氟化物，令初期蛀坏的部分还原），但是，你必须定期洗牙，还要经常使用牙线清洁牙齿。

But the researchers found something that works even better than fluoride: iron.

那就是铁。

Currently the FDA allows bottled water with added fluoride to contain between 0.8 and 1.7 milligrams per liter.

目前，美国食品药品监督管理局允许加入瓶装的氟含量在每公升0.8至1.7毫克之间。

They find that fluoride treatment can loosen bacteria's grip on tooth enamel. The study is in the journal Langmuir.

他们发现氟处理能缓解牙釉质里细菌的压力。这项研究发表在《朗缪尔》期刊上。

They found that three different strains of cavity-causing bugs cling less tightly to enamel that's been rinsed with fluoride.

他们发现引起蛀牙的三种不同的菌株很粘附于有氟化物加固的牙釉质表面。

Municipalities set their own fluoride doses, and most said it around this amount.

各市政当局自行设定氟化物剂量，大多数设定在这个范围内。

And one thing he believes is that we should advise all US water systems to remove fluoride from public water.

而他相信的一件事是，我们应该建议所有美国系统从公共用去除氟化物。

Something to remember is using toothpaste without fluoride is not effective against dental caries.

需要记住的是，使用不含氟的牙膏对预防龋齿是无效的。

The pesticides on our food can have fluoride in it, too.

我们食物上的农药也可能含有氟。

And that's where the fluoride hangs out, helping to stave off an acid attack of the enamel—in other words, a cavity.

而氟化物就在这里聚，帮忙延缓阻挡牙釉质的酸蚀—换句说抑制蛀牙。