After a wisdom tooth is removed, you may have or notice then consult the dentist:

Pain and swelling in your gums and tooth socket where the tooth was removed.
Bleeding that won't stop for about 24 hours.
Difficulty with or pain from opening your jaw (trismus).
Slow-healing gums.
Damage to dental work, such as crowns or bridges, or to roots of a nearby tooth.

A painful inflammation called dry socket.
Numbness in your mouth and lips after the local anesthetic wears off, due to injury or inflammation of nerves in the jaw. Numbness will usually go away, but in rare cases it may be permanent.

Dental surgery may cause bacteria in the mouth to enter the bloodstream and cause infections in other parts of the body. People who have difficulty fighting off infections may need to take antibiotics before and after dental surgery. Such people include those who have artificial heart valves or were born with heart defects.

Management of Post Extraction Complications