Wisdom teeth get their name because they typically begin to emerge within the mouth between 17 and 25 years old, which is the key transition period into adulthood. It’s estimated that around 90% of Americans are born with anywhere between one and four wisdom teeth, with the remaining 10% being born with none (lucky them!). Chances are, if you’re in the majority, it’s likely that you’ll need to have them removed. However, that’s not always the case. Read on to learn when wisdom tooth extraction is necessary.