Hello Lybrate user, the bulge near the root canal
treated tooth is actually abcess containing pus. This exactly means that your root canal treatment
has failed and their may be numerous reason for that. Now since root canal involves removal of pulp which contains nerves, this is the reason for you not having pain
. Yes you should worry for this swelling
, the infection
will spread and gradually you will loose your tooth. Visit your nearby dentist
, before doing anything he or she will take an xray of that particular teeth, to check what is wrong with the root canal. Re root canal followed by crown should subside the infection.