I have noticed today that two black lines have appeared on the bottom row of my teeth, second tooth in from the back. It has only just appeared over night and the line starts in the middle of my tooth and the black lines are on the same tooth on both sides of my mouth. One is quite easy to see but the other is barely noticeable. I noticed them when I was brushing me teeth and was worried if it was my teeth rotting... . I have had a good set of teeth all my life but until these black lines appeared I fear my teeth will 'erode' now Is there any way my dentist can get rid of them/clean them?
Thanks in advance,