Re-RCT is the only treatment choice. Generally in more than 90% of the cases tooth becomes fine after Re-RCT. Re-RCT is required in cases when RCT has not been done properly before for example when a canal is not filled properly. If you go for extraction, replacement cost is more because in that case you will need a bridge of 3 teeth. Nothing compared to saving your natural tooth by Re-RCT.
Next Steps
Get an X-Ray of the tooth done, before deciding on the next course of action.
Health Tips
Take a decision as soon as possible.