Wisdom teeth are the very last teeth to develop, and they grow in the very back of the mouth. In most cases, you will start to feel these teeth emerge when you are in your late teens or early twenties. Almost everyone has these teeth removed since they tend to grow at a severely slanted angle and will likely bump into other teeth and cause crowding. There is also very little space available for these teeth. Ultimately, about 85% of adults end up having their wisdom teeth removed.