No, I am not a smoker. I haven't used straws or even sneezed with my mouth closed. Yes it was done at the University of Minnesota dental school. I just wanted it pulled because it cracked and was painful. I was only visiting and couldnt find anywhere to accept my out of state insurance. I had no idea it was going to turn into this. Oh to your previous reply it was not a root canal however the tooth next to it is. I've only been taking Sudafed when the pressure is to the point where I can't move.