Wisdom teeth are the last molars on each side of the jaws. they are also the last teeth to emerge, or erupt, usually when a person is between 16 and 20 years of age.
Since Wisdom teeth are the last permanent teeth to erupt, there is not enough space left in your mouth to accommodate them. This can lead to impacted teeth that are trapped beneath the gum tissue or the bone. The impacted teeth may cause swelling, tenderness, cyst formation.