Picture of Wisdom Teeth
Wisdom teeth are the last set of molars that erupt by the time people are in their late teens or early 20s. Wisdom teeth are not necessary. If wisdom teeth crowd out other teeth or they cause pain or symptoms, they may be removed surgically. Misaligned wisdom teeth may be particularly problematic.
Image Source: Wikipedia
Text Reference: American Dental Association Mouth Healthy: "Wisdom Teeth"
Text Reference: American Dental Association Mouth Healthy: "Wisdom Teeth"