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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.
What else can I help you with?
How do you stop white marks on your teeth after removing braces?
Just brush your teeth
Does a black bear have teeth?
Yes, black bears have teeth.
Why do people have different bite marks?
no teeth are alike
What do gray wolf's eat marks look like?
teeth
How does Holmes know the doctor has a dog?
Teeth marks on the stick.
Why are marks teeth so big?
no one knows they just are
How do you get rid off marks left on your teeth caused by braces?
As long as you brush your teeth while you have your braces, there will be no marks. I had no marks on my teeth when my braces were removed. Another student in my school, however, never brushed her teeth and when her braces were removed she actually had brown bands on her teeth. ~ T
What are black teeth on mammals?
teeth that havn't been brushed
Why did Queen Elizabeth have black teeth?
Queen Elizabeth did not have wooden teeth. Her teeth were rotten and black due to the fact that there were no toothbrushes or toothpastes.
How can i fix an LCD lap screen broken with black marks?
If the black marks are dead pixels then you have to replace the screen you cant fix it.
Does smoking turn your teeth black?
Smoking turns the teeth a yellow-black color because of the tar that is in it.
Why do Japanese women deliberately stained their teeth black?
Japanese women deliberately stained their teeth black to show that they were married.
