A infection can sometimes pose as a toothache. One of its symptoms is pain in your teeth and in your jaw. A sinus is simply a cavity within a bone or other tissue. When this open space becomes inflamed and filled with pressure from the infection, it can compress the nerve endings of your teeth, causing pain.
-Oral antibiotics are the most common treatment for sinus infections and must be prescribed by a medical doctor. Some sinus infections can be prevented through the use of nasal decongestants and oral antihistamines. On rare occasions for those with frequent severe sinus infections, surgery is indicated.