Wisdom teeth sometimes cause pain, swelling, cavities, or gum disease. When they have to come out it’s usually because:
They’re impacted. Because they sit so far back in your mouth, wisdom teeth can get trapped in your jawbone or gums. This can be painful.
They come in at the wrong angle. They may press against your other teeth.
Your mouth isn’t big enough. Your jaw has no room for an extra set of molars.
You have cavities or gum disease. You may not be able to reach your wisdom teeth with your toothbrush or dental floss.