Wisdom teeth, also known as third molars, typically develop between ages 18 to 25 but their presence depends on jaw size. Reasons for removing wisdom teeth include impaction, cavities, and crowding of other teeth which can all cause pain. Half erupted wisdom teeth without decay can still cause jaw deviation and result in jaw, head, and ear pain. As a general rule, wisdom teeth should be removed unless they can be properly maintained to avoid issues. It is best to have wisdom teeth evaluated by a dentist to determine the right time for extraction.