I know how scary the thought of a dentist is but it is very important to have the work that is needed done. I have my hygienist alternate the cleaning between the upper and the lower and go more often. My dentist has agreed that we will only do the work that is absolutely necessary.

Although it doesn't quite answer your question Kilikina this is an interesting article from RSDSA

CRPS Patients and Dentistry: A Dentist's View
By Christopher R. Brown, DDS, MMPS

http://www.rsds.org/3/treatment/rsd_dentistry_brown.htm

Good luck with your root canal.

MsL