Biological complications (meaning problems elsewhere in the body) occur in over 69% of cases after cavities, root canals, or implants. Yes, your teeth affect the other parts of your body. It’s called “terrain theory”. This means that symptoms could be affected by the health of your teeth, your gums, and the dysbiosis of bacteria in the mouth. This includes IBS, migraines, sinus congestion and allergies, even insomnia and depression could be influenced by the health of the mouth and teeth.