Dental fillings are typically used to treat cavities. Cavities are small holes in the tooth caused by decay. These holes in the tooth are filled with an amalgam or composite substance. Some people will have tooth pain or sensitivity after getting a new cavity filled, but it should go away within a few days.
The following are some of the causes of tooth pain that occurs after a filling.
Before your dentist can fill a cavity they must remove the decay from your tooth with a drill. In some cases, the heat from the drill can inflame the connective tissue that makes up the center of the teeth, called the pulp, and it can become inflamed. In rare cases, an infection can develop. Infection in the pulp will cause the gums to swell and you may notice a puss near the tooth.
Change in bite
Once in a while a filling can cause the repaired tooth to be taller then the other teeth. When this happens, biting down can put more pressure on that tooth causing pain. It can also crack the filling.
If you are having pain in the teeth that surround the one that received a filling, the cause may be due to referred pain.
Multiple tooth surfaces
Having different services in your mouth can cause odd sensations when they are attached. for example, this can happen if you have a silver filling above or below a gold crown
Some people will have an allergic reaction to the substance used for filling their cavities. In addition to pain you might notice a rash or experience itching.
If your tooth pain doesn’t seem to be getting any better, or getting worse, you should contact your dentist.