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Sometimes it's just genetic - teeth are naturally yellowish. REALLY WHITE TEETH are obviously bleached. But teeth can become yellower from smoking, plaque build-up (if you never brush or get your teeth professionally cleaned), drinking lots of coffee/red wine/soda, and if you have dry mouth (from medications or doing drugs).

p.s. If you have ONE tooth that suddenly turns a different color, you may have some sort of infection. See your dentist.

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12y ago
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12y ago

Actually, there are lots of factors that may change the the color of your teeth. One of the most common cause which affects the color of your teeth is in fact your genes. If both your parents have naturally yellow teeth, then most likely you'll have a similar teeth color. Also, some of the main factors that can cause yellow teeth apart from the genes are food, oral hygiene, and aging.

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Q: Why do some people have yellow teeth. What exactly is the cause for a tooth to become yellowish?
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