I had root canal done 20 yrs ago on my upper front teeth. It is painful now. Yesterday I went to dentist and the xray showed that it is infection. He suggest to do apicoectomy.. He guarantee there is no more infection after that.. ??*he also said from the xray that I have 2 other teeth that need root canal.*Is that true you cannot have pain or infection anymore after apicoectomy?I am not a big fan of root canal. My first root canal tooth got extracted when I was pregnant because of infection. Right now is the second root canal tooth.Any advice would be appreciated. Thank you