How can I tell when your wisdom teeth need removing?

After Evaluation. A thorough clinical examination with the appropriate x-rays allowing visualization of your wisdom teeth and jaws should be performed to determine if and when you should have wisdom teeth removed. If your wisdom teeth are the source of pain or contributing to problems of the jaws or adjacent teeth or structures, they should be removed asap.
Ask a dentist. There are many factors leading to the ultimate decision of wisdom tooth removal. The most obvious is pain. After that, it really is a judgment call. Are the teeth able to fit in the back of the mouth without causing crowding? Can they be reached with a toothbrush and dental floss? Are the front teeth starting to crowd? To name just a few. Ask your dentist to find out.