Hello The main reason for the infection in the bone is inadequate or improper root canal treatment. An efficient re-root canal may prevent further surgery if required. In my experience whatever cases i have done most of the times a good re-root canal is enough to resolve that infection.

Since you have undergone repeated RCT with that front tooth and there is recurrent infection, you need to do something more than just rct. Along with rct, you need a apicectomy surgery, which will reduce the chances of any peri apical infection as well as clean up all the reactive tissue that is formed in response to the recurrent infection in the bone, at the root end. When both these things are done by a team of specialists, it will work for you.

Hi. Please consult an Endodontist (rct specialist) only for your treatment. Take care.

Find a good endodontist near you who specialises in root canals