I have to get a treatment 2 years ago, but my family couldn't provide enough money for a root canal treatment so I get tooth filling first. Shortly I got pustules I couldn't do anything but to take painkiller pills, then the pustules pop and the pain got away. Now, that pain are back. I really want to be cured. The background story of this before I needed root canal treatment is my tooth cracked and my family couldn't afford a proper treatmentso I have to wait and then it's getting worst. My tooth decayed and there's a cavity that my nurve tissue exposed. Please help me. Thank you