Yeah most of the meds give all of us dry mouth which causes dental problems. I also personally think something about rsd messes up our teeth. I'm not a Dr just a sufferer. I have had dental issues all my life but its been more pronounced since I got this darn disease. I have had fillings fall out crowns fall off or move, and even more cavities than isnormal for me. I suck on peppermints and brush 3 times a day but still have to get them filled. I have also found that the new white fillings hurt me more than the regular silver fillings. I don't know why but I have had 2 white fillings and they hurt so much to this day. The silver ones I have gotten don't hurt as much. I have also found my jaw is so sore I have to go on a liquid diet for about 2 to 3 weeks, even after a simple cleaning. But we are all different remember that.