Root canal treatment in Huntsville is often an effective way to relieve pain and save a tooth from extraction. Unfortunately, though, there is always a small chance that the procedure won’t be successful. A root canal may fail because the dentist didn’t quite get all the bacteria out of the tooth or because a permanent filling wasn’t placed in the tooth soon enough after treatment. If you suffer from a failed root canal, it’s important that you see an endodontist as soon as possible so they can fix the problem and get you back to smiling that gorgeous smile of yours. What exactly might an endodontist do to correct the issue?