Wisdom tooth refers to your third molar teeth. The third molar will be the last adult tooth to erupt and it normally surfaces around 18-21 years of age.
Sometimes, wisdom tooth can be removed via normal extraction. For certain cases the wisdom tooth could be 'jammed' or impacted. In such cases,the tooth has to be removed surgically.
A wisdom tooth surgery is a procedure whereby the dentist performs a minor but delicate surgical procedure to remove a wisdom tooth that has not erupted fully. Wisdom tooth surgeries are usually done under local anaesthesia.