I recently switched from Levothyroxine 50mcg to Armour thyroid 60 mg half a pill a day about a month ago. Recently I noticed my front teeth, especially the two top front teeth, have been losing enamel at a really alarming rate. Losing enamel as in they're turning clear on the edges and you can shine a blue light thru them easily. I haven't really changed anything in my diet and I don't eat or drink alot of sugar, coffee, wine, acid foods, etc. But I do sleep with a Over the Counter mouth guard cause I grind my teeth at night. But before taking Armour thyroid, I never noticed mouth guards causing this problem.....Just wanted to know, is there anyone else on Armour thyroid or thyroid meds period and experiencing something like this or similar?