Why do people get their wisdom teeth removed?

Wisdom teeth get pulled out to prevent pain and discomfort. If the wisdom teeth don't have enough room in the back of your mouth and they grow in they will push your existing teeth out of the way and cause them to be mashed together. They can also grow in sideways, this is known as being 'impacted'. Sores can grow on your gums and become infected, leading to major problems down the road.