My rear bottom molar has broken apart so much that there is just about nothing left to see. My gums have covered up what remains underneith.
A few years ago my top molar (which is kind of angled to form a spike) broke the two teeth under it. I believe this was caused by me always resting my jaw on my hand while sitting at the desk.
The back tooth that is almost not visable anymore is still white. The one in front of it about 60% visable turned a light gray.
Does it really matter if I just let them break down to the gumline? Can what's still underneith cause problems?