Hello,
If you have cavity associated with your painful teeth region, usually you will have to get Root Canal Treatment done only after necessary investigations like x rays. RCT will help save your tooth .
In very unusual circumstances like high failure rate even after RCT, then you will have to go for tooth removal.
Always try to retain your natural teeth.
Next Steps
Please get the necessary x rays from your dentist and get appropriated treatment as soon as possible as infection spreads to other areas quickly.
Health Tips
Please don't delay untill it even too late to save your teeth