<s>[INST] I had a cavity filled & a non permanent crown done 4 days ago, they said it was deep, but I have a lot of pain, redness & swelling. Have used salt water & warm rag & ibuprofen & it is not helping. I feel sick & it hurts pretty bad. Is that normal? What should I do? [/INST] Hi Dear,Welcome to HCM.Understanding your concern.  As per your query you have symptoms of  painful swelling and redness post a cavity filling procedure which could be due to number of reasons such as high point on filling, remains of infection under the filling and it could be cracked tooth syndrome.Need not to worry. I would suggest you to  visit dentist once and discuss the above condition . Doctor may considered filing after removing all infected area and can do root canal treatment. If it is cracked tooth then splinting of tooth is required. Maintain oral hygiene. Do rinsing with antiseptic mouthwash.Hope your concern has been resolved.Get Well Soon.Best Wishes,Dr. Harry Maheshwari </s>