Are cavity fillings supposed to hurt hours after you get them?

No, cavity fillings should not hurt hours after you get them. If you experience pain or discomfort that lasts for more than a few hours after receiving a filling, it's important to contact your dentist as soon as possible. Some possible causes of pain after a filling include:

- Nerve irritation: The filling may be too close to the nerve in the tooth, causing irritation and pain.

- Allergic reaction: Some people may be allergic to the materials used in the filling.

- Infection: If the tooth was not properly cleaned before the filling was placed, bacteria can enter the tooth and cause an infection.

- Incorrect bite: The filling may be too high or too low, causing your teeth to bite incorrectly and putting pressure on the filling.

If you are experiencing pain after getting a filling, it's important to see your dentist as soon as possible so that they can identify and treat the cause.