How often and in which situations do you prescribe antibiotics during root canal treatment?

The indications should be systemic: fever, malaise and significant swelling. In addition, for patients with very severe pain and no drainage from the canal, I may sometimes recommend antibiotics for a few days until the pain subsides. Otherwise patients may have a very difficult postoperative period. Scientific studies have shown that antibiotics do not relieve pain, although clinically things can sometimes be different.