Infections, Abscess, Facial Swellings need to be treated with incision & drainage to remove pus and release associated pain due to pressure.
The involved tooth also may have to be removed since it is the causative focus. This commonly arises from infected and decayed teeth which are left untreated or in some compromised cases like diabetics where a small infection can flare up and give rise to a huge facial swelling. These swellings or abscesses can be life threatening and can spread along fascial spaces upto the respiratory and digestive tracts causing difficulty in swallowing and breathing and are called Ludwig`s Angina in such a situation.
All these cases of swelling need to be aggressively treated by a specialist with antibiotic coverage and draining of pus along with tooth removal.