Wisdom tooth is the last tooth in the arch and is also the last one to erupt. If they are aligned properly in the arch then they need not be removed. But if they grow sideways, or emerge partially or remain trapped inside the bone it is necessary to remove them. They may cause infection which would result in swelling and pain. They can also affect adjacent tooth. Not only this, they may also disturb the natural alignment of other teeth. Therefore, an early removal of wisdom tooth is recommended.
Tooth extraction is the removal of a tooth due to disease, crowding or trauma. An extraction may be needed for resolving various dental problems when it becomes difficult to restore or maintain them. Your dentist may suggest extracting a tooth to improve the overall health of your oral cavity.