Two months ago I had several crowns and veneers put on my top teeth. Since then I have been in constant pain. It is an achy, stinging feeling, mostly on the front teeth. It even hurts to breathe. If anyone has ever experienced this, please respond. I have gotten lots of opinions, but no two are the same. Nothing shows up on the xray and the pain affects so many teeth that I do not want to arbitrarily get root canals. Is this how infections start? Is it possible that my teeth are getting ready to fall out? If anyone can offer some insight, please help.