Tina, if it's not too late read my latest post (about root canals):
I recently discovered that there are better alternatives to root canal. I have root canal and i regret it. Unfortunately dentistry is all about aesthetics and "drill, fill and bill" nowadays so you need to find a specialist who actually cares about your oral health.
Root canals don't last long, even at the best case scenario when your RC has been done properly you'd still have a dead tooth which will need to be extracted at some point of your life. There are many negatives to root canals and why they always eventually fail, please research them. So the best option is to avoid caries developing on and in your teeth.
Your teeth are supposed to last your entire life, so if you are going to get a root canal done at least find a specialist who works with the alternative filling material - Endocal. Although it has it's negatives too it might at least last a bit longer and prevent an infection in your dead tooth, whereas the commercial Gutta-Percha filling doesn't have these properties and often lets germs live and multiply in your tooth.
Apparently the best alternative out there is this:
"The option is truly holistic because it takes into account your body’s natural and innate ability to
heal and regenerate injured and damaged tissue, in this case nerve tissue. This holistic, alternative option is called a “pulp cap”. Think of it as a nerve cap.
A nerve cap is a dental procedure, distinctly different from a root canal, by which a dentists seals off the injured, exposed nerve tissue with a special dental material. It functions as a permanent band aid. A nerve cap avoids a root canal, giving the protected nerve tissue the opportunity to regenerate and heal, instead of being destroyed by your dentist. A nerve cap is only possible if the nerve in your tooth is alive. Generally speaking, bleeding is a good sign that it is still alive. Once a root canal has been started, it is too late for a nerve cap.
Any dentist can perform a nerve cap and successfully seal off the injured nerve tissue, as long as the injured nerve is alive, and providing they use a special dental material called Mineral Tri Aggregate or MTA for short. A holistic dentist is more likely to be familiar with it than a conventional dentist. Mineral Tri Aggregate is essentially sterilized portland cement.
MTA works extremely well because it is sterile, bland, slightly alkaline, which promotes healing and stops bleeding, and it adheres to the tooth surface, just like portland cement sticks to hard surfaces. It even stops the pain of an injured nerve. Once the MTA has been successfully applied, a dentist can then protect it with a temporary filling, until the tooth can be properly rebuilt and restored.
The next step is for you to supply the delicate, injured nerve tissue with all the nutrient support possible."
Now that you know this research more and see what else you can find.
Finally, if you are really going for a root canal then you should preferably choose an endodontist, since they specialise in endodontic therapy which is the medical term for root canal.