Doctor's Answers (1)
The symptoms of a failed root canal treatment (RCT) includes:
In your case, if you are experiencing pain after 4 years, it is possible that infection has returned to the tooth. You are recommended to visit your dentist/endodontist so that he/she can do a thorough examination of your tooth.
If the tooth can be salvaged, a second RCT can be done. If the infection is too serious and the tooth cannot be saved, then extraction and tooth restoration (eg. dental implant) can be done.
Dr Irene Sim