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.