What causes tooth staining and discoloured teeth?

Our smile is our most important social asset thus it’s normal to pay close attention to if our teeth starts to change colour, given it can have a negative impact on first impressions we give in social settings. Thus, it’s natural to think about what the causes of tooth discoloration are and what we can do to make them naturally whiter.     

Tooth discoloration happens when the colour of your teeth change. They may get darker, yellow, stained, develop white or dark spots on the enamel surface etc. Reasons for tooth discoloration can be split into extrinsic (caused my something that touch your enamel), intrinsic (caused by something inside your teeth), or age factors. For most people, the yellowing process is accelerated by the things we eat and drink, and other external factors. These include:

Food and Drink

Coffee, tea, red wine, and certain fruits and vegetables are major causes of staining. They all contain intense color pigments called chromogens that attach to your tooth enamel causing discoloration.

Two chemicals found in tobacco create stubborn stains:


Tar and nicotine are two chemicals that cause bad stains. Whilst tar is naturally dark, nicotine turns into a yellow surface-staining substance when it’s mixed with oxygen.

Poor dental hygiene

If you don’t brush, floss, and rinse your mouth twice a day, plaque and stain-producing substances will build up making your teeth look yellow, stained, and dirty.   


There are multiple diseases that can negatively effect enamel and dentin, which can lead to tooth discoloration. Certain medical treatments can also affect tooth colour e.g., radiation and chemotherapy, as well as, certain body infections.    


As you age, the outer layer of enamel (hard surface) wears away with brushing and expose the yellowish dentin (softer inside).  


Damage from trauma, e.g., a hit in the mouth or fall can change the colour of your tooth when it reacts to an injury laying down more dentin, which is the darker layer under the enamel.    


Certain medication such as the antibiotics tetracycline and doxycycline are known to discolour teeth when given to children. Tooth darkening can also be a side effect from use of particular antihistamines, antipsychotics and high blood pressure medications.

Oral environment

Excessive consumption of fluoride (toothpaste, rinses, mouthwash, supplements) products or from naturally high fluoride levels found in certain waters naturally can cause teeth discoloration.    

What are the teeth whitening options?

Depending on how much money your are willing to spend on getting your teeth naturally whiter, the three main teeth whitening options are in-office whitening, dentist dispensed at-home kits, or the VOLT London Professional Teeth Whitening Kit.

Dental office treatment: Requires a visit to a dentist office that use a combination of LED light and stronger teeth whitening gel to bleach the teeth. Each treatment takes about 60 minutes and cost £350-800. It’s possible to get 6-8 shades brighter. You should only seek treatment from certified dentists.

At-home whitening treatments from your dentist: Certain dentists can create custom whitening trays that you can use at home for professional teeth whitening. You buy the gel from the dentist, which contain higher concentration of hydrogen peroxide. The gel is added to the tray and you wear it up to an hour. These treatments normally take a few weeks to generate desired results and cost from £200.

VOLT London Professional Teeth Whitening Kit: Our Professional Teeth Whitening Kit has been tried, tested, and perfected to meet and exceed the UK and European Safety and Quality Controls for cosmetic and oral care products. Completely safe to use whilst trusted to deliver promised results.  

The VOLT London Professional Teeth Whitening Kit use Dual Light Technology to optimize the effect of our high-quality teeth whitening gel with oxidising ingredients that help safely and effectively whiten your teeth whilst wiping away years’ worth of stains caused by coffee, wide, soda, smoking and more.

Benefits of using VOLT London Professional Teeth Whitening Kit

  • Advanced 18% PAP Whitening Technology
  • Enamel Care Technology – safe for the enamel and gel formula enriched with vitamins and minerals to promote gum and enamel health  
  • No sensitivity, gum irritation, or weakening of enamel
  • Whitens both tooth surface and in tooth crevices for optimal whitening results  
  • Removes surface stains caused by coffee, wine, soda, food, smoking and more
  • Not tested on animals and vegan friendly
  • No Artificial Colours or harmful chemicals 
  • Manufactured to ISO 22716 standards in a UK laboratory using premium quality dental-grade ingredients
  • Whitening gel has been formulated by leading British dentists


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