This makes my teeth hurt

I saw that earlier today! That's mean and horrible to do to someone.
Made me wonder about a root canal I recently had. The tooth remains sensitive and from all I've been told, it should have no feeling. HRM. Except I paid for it and unless I go to another dentist, have no clue if it was done right or not. He messed up a second one but apologized, admitted it was done wrong, fixed it and recapped it at his own expense, so now I don't know what to think.

I am curious now about my husband. He had a different dentist but same office and had a root canal...the root was long and not straight and the file broke off in it. The dentist said it worked out just fine because it had the same effect, so he left it in there. Now I'm really hoping it isn't an issue because he says it still hurts sometimes, not bad but a dull pain when he brushes. Hrm.