The advantage of the root canal is, obviously, saving the tooth. We rebuild the tooth to make it look like a natural tooth, and you're able to have a tooth: it's actually functioning.

Whereas when you have an extraction, the same thing happens. You're relieved of your pain, but you don't have a tooth that you can function on. You're not able to chew on that area. When you're looking down the road for an extraction, you'd have to think of maybe potential restoration options, a denture, or an implant to put a tooth in that space, would be something that would be necessary down the road.

The disadvantage of doing a root canal procedure is you're going to have to purchase not only the root canal, but a filling on top of it to seal off the work of the root canal, and most likely a crown to give it the inherent structure that's necessary for it to function inside of the mouth.