Varies: Could be a sign of lead poisoning. You often get a bluish line (burton's line). But likely a more benign problem. Might be best to see your dentist.
Answered 10/24/2017
5.3k views
Gum disease: Sounds like generalized inflammation of the periodontal (gum) tissue. I suggest you see your dentist for an evaluation as soon as possible.
Answered 2/4/2013
5.3k views
Calculus: The black line at the base of the tooth could be from deposits hiding under the gum line.This is causing gum disease, you should see a dentist for proper evaluation and treatment.
Answered 3/10/2013
5.3k views
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