Since your sinuses are near your mouth, the pressure accompanying an infection can cause pain in your upper teeth. Pain in the teeth may also result from a toothache. A sinus infection ...

who lists the following as signals that your tooth pain is due to pressure from a sinus infection: Pain affects only your upper teeth. As noted above, sinus-related pain typically affects the ...

that it had expanded above the upper back tooth roots and broken into the inside of the neighbouring air sinus. This cyst had a sack as thick as a deflated balloon and was filled with pus.

It can affect a single tooth or groups of teeth, like your front or back teeth. Normally, your upper teeth are wider and sit on the outside of your bottom teeth. Each upper tooth touches the ...