I just noticed today that one of my upper molars is turning black.  I have a little discomfort but nothing major, which is why I even looked at the tooth to begin with.  This has to be recent because I brush and floss religiously and check my teeth.  What to do?  Could it be a bacteria or is it cavity?
Helo, thanx for consulting at Chat Doctor.it could be due to dental caries,it causes black discoloration,,, it could also be due to pigmentation if your Chat Doctor. .hope it helps.TC