When a tooth goes untreated for longer than it shoul the bacteria found in the infected tooth pulp will spread into the gums and jaw. If the procedure isn’t done promptly, however, the infection can spread. If the deepest layers of the pulp become infecte it may be too late to save the tooth. You will have to have a crown put on to protect the root from further problems. While root canal treatment is need when the pulp in the teeth become inflamed or infected from bacteria.
I say “preserve” and not “save” because it’s like mummification.
It’s taking a dead pharaoh and stuffing him — it’s not saving the pharaoh’s life. By the time you need a root canal, it’s too late to save the life of the tooth because it’s already infected and dying. The root canal therapy procedure is to clean out the infected tooth so the pain will stop. Waiting just prolongs the agony.
Get to your dentist pronto and get it done. The other alternative to stop the pain would be to get your tooth. It may already be too late to have it filled.
When you have a toothache, that usually means the decay is close to the nerve. Go to the dentist for an inspection and they'll determine wether you need a root canal or not.