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What causes yellow teeth and discolouration

Most people are born with ivory-coloured teeth, but there are various naturally-occurring shades, ranging from yellow to grey. The colour of your teeth is determined by your DNA in the same way that DNA sets your eye or hair colour. While a yellow shade isn’t a sign of poor oral health, yellow stains are generally caused by bad dental habits. Let’s take a look at some of the most common causes of teeth discolouration.

Poor dental hygiene

Plaque build-up is one of the primary causes of teeth stains, so be sure to brush your teeth day and night with a fluoride toothpaste. We recommend new Pepsodent Germicheck 8, which provides 8 scientifically proven benefits including whiter teeth, and slowing down plaque formation.

Enamel damage

Teeth turn yellow with age, as enamel eventually weakens, exposing the dentin beneath, which is a darker substance that forms the bulk of the tooth. You can prevent enamel damage by sipping acidic drinks through a straw, cutting down on acidic foods, and brushing, flossing and rinsing every day.

Foods and drinks

Enamel has minuscule crevices that can hold tiny food and drink particles. Coffee, wine, tea, and berries are especially high in tannin, Coffee, wine, tea, and berries are especially high highly coloured materials - substances that will cling to the enamel and cause discolouration. Try to limit your intake, and rinse your mouth with plenty of water after you’ve consumed acidic food and drinks. Most importantly, brush your teeth twice a day and visit your dentist regularly. 

Chewing tobacco or smoking

Tobacco contains nicotine and tar, which will stick to your tooth enamel and cause discolouration. Quitting smoking will improve your overall health as well as the appearance of your teeth.

Medication side effects

Certain antibiotics, such as tetracycline and doxycycline, are known to discolour teeth in children. Antihistamines, antipsychotic drugs and high blood pressure drugs can also lead to discolouration – it’s a good idea to consult your doctor before taking them.


For daily maintenance, we recommend using Pepsodent Germicheck 8, a fluoride toothpaste which contains CPC, clove and neem oil. Germicheck 8 gives you 8 scientifically proven benefits, including preventing stains and teeth whitening. The formula fights germs not only on your teeth, but also on the tongue, cheeks, and gums to give you whole mouth protection.

Here are the 8 scientifically proven benefits of Pepsodent Germicheck 8 that help to maintain healthy teeth and mouth for you and your family:

  1. Prevents cavities
  2. Prevents plaque growth
  3. Makes your breath fresher
  4. Makes your teeth whiter
  5. Maintains gum health
  6. Protects tooth enamel
  7. Prevents bad breath
  8. Protects from stains

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