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how to whiten teeth naturally at home?

*my teeth are yellow-tinted but are not due to smoking/caffeine, how do I whiten my teeth at home without buying expensive whitening kits?
Teeth are naturally yellow-tinted due to the yellow dentine layer beneath the thinner, translucent enamel layer.

Brushing your teeth twice a day (abrasives in toothpaste help to remove stains) and avoiding tooth-staining foods and drinks such as wine, tea, coffee etc. Is the simplest way to avoid tooth-staining. There are also toothpastes specifically designed to whiten teeth which you could try
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the are specific toothpastes that are good for teeth whitening and they are effective

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