How To Treat Jaw Pain From Sinus Infection. Try to breathe through your nose. When the sphenoid sinuses become swollen and blocked, pressure is exerted on the small components of the nearby middle ear, causing discomfort or even pain.

When the sphenoid sinuses become swollen and blocked, pressure is exerted on the small components of the nearby middle ear, causing discomfort or even pain. Try to breathe through your nose. Saliva in the mouth helps digest food and wash away the bacteria that can cause tooth decay and gingivitis.if you notice signs of dry mouth after sinus infection tooth pain, try the following: