I had dental work done and my dentist had read up on CRPS first .. He gave me the choice of nitrus oxide (laughing gas) or Atavan prior to the procedure and he froze me realy well before and after the procedure as well.

I had no lasting problems although I noticed it took a long time for the hole to heal over.

Good luck and do your research first.. I called around before I settled on a dentist who was interested enouph to do his own research, though I was bringing him in my own information.

good luck,
Sandra