I have my root canal ten years now and its fine the only time a root canal tooth has to be pulled is if air gets in the tooth while the process is being carried out and now with all of the wonderful new inventions dentists have that is 1 in 10,000 chance of happening if at all and more than 99.9% of people who have one done do not get that happening and besides my husband got one recently and the dentist told him that if he has pain that night after all his medication and so on then the tooth has not been packed properly so he will have to have it re-done at no cost or have it pulled but it would be his decision.