Tooth Pain After a Filling When Biting

Why does my tooth hurt when I bite after a filling?

Some sensitivity can happen after a filling, particularly if the decay was deep or the tooth was already irritated. Pain that mainly appears when you close your teeth, chew or bite on the filled tooth has several possible causes. The filling may contact the opposing tooth too early, the tooth may still be settling, or there may be a crack or deeper nerve irritation.

The pattern matters. A bruised feeling when chewing differs from lingering pain after hot or cold, pain that starts on its own, or swelling. You cannot reliably diagnose the cause from symptoms alone, but describing the pattern helps your dentist decide what to check.

If the discomfort is persistent or worsening, contact the dentist who placed the filling for advice. Our dental fillings page explains the treatment itself; this guide focuses on pain after treatment.

Could the filling be too high?

A filling can sometimes feel as though that tooth touches first when you close your mouth. Extra pressure may make it feel tender, bruised or uncomfortable when chewing. The tooth may also be sore when tapped. A dentist can check how your teeth meet and whether a bite adjustment is appropriate.

A sharp pain when you bite or release pressure deserves assessment too. It can have more than one explanation, including a crack. Avoid chewing hard food on that tooth while arranging a review.

What sensitivity can settle, and when should I call?

Mild cold sensitivity that is improving may settle as the tooth recovers. Contact your dentist if the tooth hurts each time you bite, the bite feels uneven, discomfort is not improving, or symptoms are getting worse. Tell them when the filling was placed, whether it was deep, what triggers pain, and whether the pain stops promptly or lingers.

Arrange prompt dental advice for spontaneous or night pain, lingering hot or cold pain, a bad taste with swelling, or pain that makes it difficult to eat. If pain is severe or rapidly worsening, or you develop fever, facial swelling or difficulty opening your mouth, seek urgent care. Breathing or swallowing difficulty needs emergency medical help.

Our emergency dental page explains how to seek care for severe symptoms. For pain that was present before the filling or occurs in other teeth, see the broader toothache guide.

Does biting pain mean I need a root canal?

No. A high contact or temporary sensitivity may explain the pain, and some teeth settle after treatment. However, a deep filling can leave the pulp inflamed, and persistent, spontaneous or lingering temperature pain may need a closer assessment. Sometimes a cracked or infected tooth needs a different treatment plan.

Your dentist may ask about the pain, examine the filling and gum, test the bite and tooth response, and take an X-ray where useful. An X-ray alone may not identify every cause. If the pulp cannot recover and the tooth can be saved, root canal treatment may be discussed. The decision depends on the actual findings, not simply on pain after a filling.

Common questions after a filling

My tooth hurts when I bite down. Should I wait?

If it repeatedly hurts when you bite, or the filling feels high, contact the treating dentist for a bite review. Brief, improving sensitivity is different from pain that persists or worsens.

What if I have sharp pain when chewing?

Sharp pain can occur for several reasons, including bite pressure or a cracked part of the tooth. Avoid hard chewing on that side and arrange assessment.

What if my tooth hurts at night after the filling?

Pain that wakes you, starts without a trigger or lingers after hot or cold needs timely advice. Seek urgent help if it comes with fever, facial swelling or other spreading-infection signs.

What if I notice an odd or metallic taste?

An unusual taste soon after treatment can have several causes. If it persists, food catches beside the filling, or the taste is accompanied by swelling or discharge, ask your dentist to check it.

Can it wait until Monday?

Improving, mild sensitivity may be monitored briefly. A high-feeling bite or repeated pain when chewing warrants a call to arrange review. Severe worsening pain, swelling or fever needs more urgent advice. The decision depends on your symptoms, not the day of the week.