Could have been. Search curezone for impacted tooth and all kinds of posts come up about this problem.
I had an abscessed tooth that would create a pocket of infection but it never was painful. I had a crack in the tooth and bacteria was getting in there and causing infection.
I had it pulled by a biological dentist and immediately I could feel my sinuses open up and drain.
Your teeth affect your general health, too.
There is a lot to read up about dental care and don't trust your precious teeth to just anyone.