Excuse me the tooth that I fill, very painful now, what reason be

The tooth that has been filled is very painful now. It may be caused by the disappearance of anesthetic effect, or it may be the cause of inflammation in the affected part. It is recommended that you take anti-inflammatory and analgesic drugs according to the doctor's advice. And wrap ice cubes in towels and ice the affected cheeks. In addition, during the treatment period, maintain oral hygiene, eat light food and seek medical attention if necessary.