Wisdom tooth extraction is a surgical procedure performed by a dentist to remove one or more of wisdom teeth. The four permanent adult teeth present at the back corners of your mouth are the wisdom teeth. They are the last teeth to erupt in the oral cavity and are also known as the third molars.
They are called wisdom teeth because their eruption age coincides with the age when an individual matures, that is in late teens or early 20s. They may need to be removed in cases where they do not erupt in line with other teeth, or there is insufficient space for these teeth to erupt completely at the corners of the mouth.