Wisdom teeth have been around for millennia.

智齿已经存在了几千年。

Tooth decay can eventually destroy your wisdom tooth.

蛀牙最终会毁了你的智齿。

Machinists crafted rare airplane parts, while a dentist readied to remove enlistees' wisdom teeth.

机负责制作罕见的飞机部件，牙医则准备着帮士兵拔掉智齿。

Hey, will I still get wise without my wisdom teeth?

没了智齿 我还有智慧吗？

But why did wisdom teeth specifically get the boot?

但是为什麽智齿会被开除呢？

The molars include four wisdom teeth, which are the last set of teeth to come in.

臼齿包括四颗智齿，这是最一组来的牙齿。

Wisdom teeth are also called third molars.

智齿也被称为第三磨牙。

Wisdom teeth that are not well aligned and become impacted are often removed.

当智齿歪了，并发展为阻生（智齿），通常会被拔除。

And some don't experience tooth crowding or crookedness and still get their wisdom teeth without a hitch.

也有些人没有牙齿拥挤或咬合不正的状况，仍然智齿且毫无问题。

Over time, our wisdom teeth developed later and later in life, and they even began to disappear.

随着时间的推移，智齿萌发时间不断推迟，甚至开始逐渐消失。

People should have the placement of their wisdom teeth examined between the ages of 16 and 20.

人应该在16岁到20岁之间检查智齿的生位置。

Wisdom teeth don't usually grow in until you're between 16 and 18 years old.

智齿通常不会生，直到你16 到 18 岁。

And then wisdom teeth, which are usually the last to make their debut, seem to only complicate things further.

而通常最才来的智齿似乎就会让情况变得更复杂。

And that's great, because no one needs to feel what's going on when their wisdom teeth are being removed.

这很好，因为拔智齿的时候，就没人有疼痛的感觉了。

Sometimes, the wisdom teeth are impacted, meaning they are stuck under the gums.

有时，智齿会被阻挡，这意味着它卡在牙龈下面。

This can lead to impacted wisdom teeth, which may cause discomfort and infections if not surgically removed.

这可会造成阻生智齿，如果不靠手术拔除，可会造成不适或感染。

Some people naturally never have wisdom teeth.

有些人天生就没有智齿。

In fact, impacted wisdom teeth are ten times more common in industrialized people than in hunter-gatherers.

事实上，工业化社会人群的智齿阻生发生概率是狩猎采集社会人群的十倍。

If you do not have room for your wisdom teeth, you'll likely have to have them removed.

如果你的智齿没有足够的空间，你很可不得不拔掉它。

Removal is also advised if there is a chance that poorly aligned wisdom teeth will damage other teeth.

智齿排列不整齐会损坏到其他的牙齿时，也建议将其拔。