Why do top of molars have dark lines?
Q. Hello Dr. Moore, I noticed that the tops of my molars have dark lines that follow the cracks. I am not sure if this dark lines are on my upper molars because I can not see them. What is this? How can I fix this issue? Thank you very much.,
A. This is probably stain in the fissures of the teeth but ask your dentist to check them in case it is decay
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