Wisdom teeth typically come in sometime between the ages of 17 and 21. Wisdom teeth are named as such because by the time they develop, a person is old enough to have gained a certain amount of wisdom.
Situated at the back of the mouth, wisdom teeth are the upper and lower third molars. Problems associated with wisdom teeth, such as pain near an impacted tooth, irritation caused by one or more wisdom teeth growing at a strange angle, and crowding of other teeth, typically occur before a person reaches 30 years of age. All wisdom teeth that cause problems should be extracted by an oral surgeon, although experts disagree over whether healthy wisdom teeth that are not currently causing problems should be removed.