My girlfriend just got her braces off about 2 weeks ago, her tooth, second to the back is just falling apart. It looks like she will need a root canal. What is the best way to approach this? Pull it, try to save it with a root canal?

I'm afraid fixing the tooth might trigger something and then have pain in more than just her hand and arm. It is something that needs to be done. Can't just ignore a rotting tooth.

Anyone with suggestions? We are still "new" to this disease, condition, whatever it is.

Thanks,
Heffe