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Nicotine and coffee stains. If they are definable actual marks and not just faded staining, then the lines can be caused by an antibiotic, or steriod. Like a nasal spray. Just keep brushing and go to the dentist, they will tell you what they definitely are, and likely will find they areable to clean it off.

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12y ago
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13y ago

Well typically. It means a sign of inside rotting in which I had. To remove soak your mouth in powdered banking soda for 5 Min's then add tooth paste to your tooth brush and brush the tooth or teeth that is infected.

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9y ago

There are a few reasons why the backs of your teeth are brown. They could be stained or have cavities.

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15y ago

This sounds like typical extrinsic stain. Common culprits are tea, wine, tobacco, or coffee. See your dentist and dental hygienist for a thorough dental cleaning (prophylaxis).

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14y ago

liquid flowes through pours in your teeth causing the coloring to stain your teeth.

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Q: What are the black marks on my teeth?
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