wisdom tooth

常见例句

Let me see. Open your mouth wide, please. The third molar (wisdom tooth) is badly decayed.
让我看一看，请把嘴巴张大。第三颗智齿蛀的很厉害。
Frequently, a fully erupted upper wisdom tooth requires bone removal if the tooth does not yield easily to forceps or elevators.
如果上颌智齿已经完全萌出，又不能轻易用镊子和起子取出，通常就需要移动古头。
blog.sina.com.cn
There’s an obvious financial motivation for doctors and dentists to overtreat people, which explains why, for instance, 75% of wisdom tooth extractions in the US are estimated to be unnecessary.
医生和牙医有着很明显的过度治疗病人的动机，举个例子，这解释了为什么在美国估计有75%的智齿原本是不需要拔掉的。

An impacted wisdom tooth is one that fails to completely rise through the gums -- the term is erupt.
And removal is called for in cases where fluid collects around a wisdom tooth that is partly or fully below the gum.