iam told I need aretreatment of a root canal this was done 10years or so how long do they last? how long will new one last will tooth be needed to be pulled eventually/  iam 62 and hate to lose any more teeth I just recently need a tooth pulled it cracked. both are molars
Thanks for your query, I have gone through your query. The root canal treatment will be last for lifetime. There is no need to repeat the root canal treatment unless if the previous root canal treatment was not done properly or if there is a secondary infection. If there is no sufficient bone support, then the tooth has to be removed. So consult a good endodontist and take an opinion and later proceed with the treatment. I hope my answer will help you, take care.