wow Sherry my sympathies to you ((((((((hugs)))))))))
teeth problems? specific to teeth...did you take any antibiotics recently in the past 5 years or really recently (like this week/month)? i know certain AX turn teeth grey. many chemotherapy agents hold the risk of tooth loss & enamal weakening (chipping, loosening, falling out).
did you tell your doc or RN and ask for input?
personally, with RA & the rest of the cast of characters that take home in my body...i developed some oral problems. receding gum lines, a lot of bleeding, inflammed gums, sores, sores on tongue too, cracked sides of mouth, and let's not leave out the ever so attractive thrush. 
oy.
so how long has this whole MS/Lyme/Lupus/RA limbo been going on? it's difficult to get a proper diagnoses because all of them are almost identical sometimes in symptoms & onset.
are you joint pains bilateral?
how's your bloodwork?
will you be seeing a rheumatologist?
take care
erin
ps...in the begining (1999 to 2002) i was back n' forth between a slew of docs cuz 1 thought it was MS, the other thought ALS...one thought Lymes...ugh! so i understand your frustration. 