Swelling without pain or discharge

Sometimes a swelling or inflammation can occur without pain and without any sort of discharge or the usual symptoms of inflammation, except for swelling. This can occur for a number of reasons, and most often happens after a root canal treatment has been started. The lack of pain may be due to the fact that the nerve is dead, and cannot process any sort of sensations. Teeth have dead nerves can get infected, but you wouldn’t feel anything of it, as the receptors that process pain are located in the brain, and the nerve relays the information to the brain. If no nerve is alive to do so, than an infection can occur that would otherwise be painful, but is currently not so. This, sadly, does not mean that the infection is not serious, or that pain will not be experienced at a later point. 

No Immediate Pain

It may also be the case that the nerve is alive and well, but the infection just has not touched the nerve yet. This means that you have some time left before the infection reaches the nerve, or the swelling gets so intense that the tooth or the surrounding tissue starts to push down on the nerve, and than terrible toothache will result.

Root Canals

Often enough, a root canal treatment will result in swelling, even if the procedure is going on as planned, and no complications (i.e.: infections) are apparent. This is simply because the root canal treatment is a cure for an infected tooth, and the medicine that is placed into the tooth starts to kill  bacteria, which results in swelling. In these cases, nothing should be done, and a little discomfort must be endured. This is why pain medication is prescribed, even for a treatment as routine as a root canal treatment. If the swelling becomes too much to bear and causes a lot of pain, then an emergency appointment is in order, preferably booked to the doctor who started the root canal treatment. The problem is, only a trained medical professional can determine if the symptoms you are experiencing are normal, or if they are pathological, and require intervention from a dentist. The dentist should give you instructions when you are getting your initial root canal treatment, and a second appointment, to finish the treatment should be booked during this session as well, that way if undue swelling occurs, it can be dealt with in a timely fashion, and before it becomes too much to bear.