Sometimes there is dead or dying tissue in the canal that holds the roots of the teeth which can cause an abscess, sometimes it is painless but many times it can be a painful experience for the patient. A solution is making an opening into the canal that is in the roots and then removing the diseased tissue from the tooth all the way to the tip of the root and cleaning, shaping, and disinfecting the inside of the canal and then sealing with a plastic material and cement so that bacteria can’t get from the bloodstream back into that space again. In the canal, when it gets infected, the first thing that happens is an increase in blood flow, which causes swelling. The swelling cuts off the blood supply and then the blood can’t fight the bacteria. This causes dead and diseased tissue which becomes a continuous source of food for the bacteria. They grow and then an abscess occurs when the bacteria start getting out to the end of the root and that is when a patient will experience a throbbing pain.

Some symptoms can be sensitivity to hot and cold that lingers afterward, spontaneous throbbing pain, and pain upon chewing. These symptoms do not necessarily mean that the patient needs a root canal. For example, cold sensitivity, if it goes away immediately, may be a sign of an irritated but healthy nerve. However, if you have hot on a tooth and it lingers for a long period of time, most of the time that will be a tooth that needs a root canal.

The most common scenario where it is necessary to do a root canal is if there is infection in the root from decay. Occasionally a root canal is also necessary due to trauma, a cracked tooth, and in rare instances during tooth restoration if the canal is to close to the surface of the tooth.

If you have an abscess tooth, and its not hurting too bad, it could be draining in to the sinus, causing chronic sinus irritation. When you look at an x-ray of the upper tooth,  the roots are visible up there and the sinus comes down – usually following a pattern of that root. In other words, the roots are holding that up and when you take the tooth out, there is constant gentle pressure there inside the sinus. The bone reacts to pressure and the bone in the maxilla is softer bone. So it does what we call numatizes that area.: the sinus starts enlarging, getting bigger because it is gently pushing that bone and the bone is resorbing (losing substance).

We see a many individuals who, when their teeth are out, have paper thin bone between the ridge and the sinus. If it’s a denture, then that can be tender all the time when they have sinus problems, and the bone goes away so we don’t have a place to put the implants. If the teeth have been removed and left our for a long time, you can still get implants, but you have to go through a grafting procedure to raise the sinus floor and grow new bone to put implants in. The other thing that is particularly prominent when you have a tooth on the side but the middle teeth are missing, is the sinus comes down and now you have a low spot where the fluids are always sitting. This makes the individual more prone to get infections. 

What are some symptoms that may indicate that the sinus problems you are having may be related to your teeth? If you had a tooth taken out and you want to have it replaced you should do it sooner rather than later so that the sinus doesn’t numatize and you don’t require an extra surgery.