How can root canals be prevented?
Protect the pulp (or "nerve") inside your tooth from anything that might bother it and you will never need a root canal (RCT). Easier said than done! You will need to avoid tooth decay, and in so doing you will also avoid the restorative treatments that are done to clean out the decay. Fillings, even when done well, can push a weak pulp over the edge and then you need RCT if you want to keep the tooth. Don't get me wrong -- you need to do the fillings and hope for the best, but sometimes the pulp is in such bad shape from the pre-existing cavity that the need for RCT follows closely on completion of the filling. You also need to avoid any trauma, whether self-inflicted (as in clenching or grinding your teeth) or caused by external events such as sports accidents, etc. You should also choose your parents carefully 😉 because many of the dental problems that lead one to need a root canal tend to run in families. Regular professional check-ups, timely preventive care (cleanings), and wearing sports or nightguard protective appliances will reduce the risk that you may need a root canal. These preventive options will also save you money and may enable you to save teeth that would otherwise be lost in spite of good treatment -- so invest in prevention and hope for the best. Good luck!