About 6 months ago I had root canal treatment done to my front left tooth. I tried to tell my dentist that I was still experiencing sensitivity to the tooth and that it didn't feel right (I've had two root canals before, one on the right front tooth and the one directly beside it so I know what feels right and wrong) and asked her not to close it up and have one more clean out of the root canal but she insisted it would settle down. I am traveling south east asia at the moment and my tooth has been sensitive and causing slight discomfort so I made a trip to a great dentist in phnom penh Cambodia and was given an examination and xray (for under $20 AUD I might add) and told I still have a minor infection at the tip of the root as my dentist in Australia has missed a couple of mm's of my nerve. What do I do about this do I have my root canal redone and then place a crown or?? I'm really annoyed at my Australian dentist and don't think it's fair that I should have to pay again considering I told her on 3 separate occasions that something wasn't right. I've starting taking amoxicillin 500mg 3 x a day to try and fix the current infection until I return to australia, will that help?