Hi I had root canal done on my upper front tooth 11 years back to fix cut. Last month developed swelling in that area, so consulted dentist. There was puss n blackening of bone below it. Doctor advised CT scan. He advised for surgery to remove infected bone, do root canal on 2 teeth and fix plate there as it's too close to nasal cavity. Is there other way to avoid surgery n fix this?? Currently I'm under medication for same.