How long can it take for pulpitis to go away?

Depends: Pulpitis comes in 2 varieties: reversible and irreversible. If it is reversible, it can go away once the cause of it has been eliminated. This includes making sure there is no high spot on a recently placed filling, any uncured composite resin has been fully cured, or there are no occlusal interferences among other possibilities. If it is found to be irreversible, the solution is root canal or ext.

Short period: Pulpitis is imflammation of the nerve tissue inside of a tooth. Treatment involves removing the inflammed tissue by means of a root canal. Once the infected tissue is removed, the pain is usually gone.