<s>[INST] I  got root canal done on my right second molar 16 years back . I have also got extracted my first molar . Doc had implanted permanent tooth with help of second molar . Now there is swelling in gum of second molar . It is not going . There is no problem in tooth as i had done opg.doc has removed that permanent tooth . I have taken ceftum 250 for five days . I am allergic to norflox tz . My dentist is not able to give that medicine to me . Now he is trying to built second molar as it comletely destroyed because of bridge. There is no pain in gum & tooth . Only swelling is there . Can u pl suggest me how to reduce swelling . Thanks ! [/INST] Hello and welcome to Chat Doctor forum, I would like to inform you that persistent swelling in the gum is either from consistent pressure from the newly implanted tooth or from infection which is still present in the root canal treated tooth. First line of treatment is antibiotics, as you are already taking them, therefore I will advise performing warm saline rinses, as many times a day as you can. This will resolve the infection as well pain. Do not apply any hot compresses on the cheek of the affected side. I hope this answer was useful, I wish you good health, take care. </s>