I have always wondered whether developing tooth sensitivity had anything to do with eventually being diagnosed as having Coeliac Disease. My tooth sensitivity all began many years ago when being enticed by an advert to change my toothpaste to a new one. The toothpaste that I changed to is thankfully (at least near to where I live) no longer available it was called 'Close-up' .... it came in two colours, I believe a jelly-like red and a jelly-like blue - and it didn't take long before I suddenly found myself wincing with every sip of cold or hot liquid, ice-cream or other food items.
All these years later, it left me wondering whether this could have been a trigger to the problem of gluten.
May be it is a question that I will never have the answer to but I have found several references that indicate that there may well be a connection at least in a few people: