Hello.... I just recently had a crown put on one of my back molars. It has been sensitive ever since. I haven't been able to eat on the right side of my mouth ever since the crown was put in. Now my dentist says I need a root canal. Is this a sign of a bad dentist? Shouldn't they have seen that I needed the root canal before giving me a crown? Called to see if I'm gonna be charged for another crown after the root canal is done, and they told me it's not certain until the procedure's done. So I may get charged twice for this crown! If they would have seen I needed a root canal before the crown, they could have done it in proper order. Now I may pay for two crowns on the same tooth! This just doesn't seem right to me. Am I wrong here? Do I have a right to argue not to pay for another crown?