Teeth Whitening

shutterstock_204678076Everyone likes to have white teeth.  Your teeth may be darker than what you would like.  Young childrens’ teeth are light.  As we get older our teeth inherently get darker. With good professional cleaning we can remove stains and deposits from your teeth.  However we cannot change the inherent colour of your teeth.

Teeth whitening using low concentrations of hydrogen peroxide or carbamide peroxide is an effective method to lighten the colour of teeth in most cases.  There are two main methods of whitening:

  • Home whitening using trays and a proprietary product
  • Power bleaching using higher concentration of hydrogen peroxide at the chair-side and a source of heat usually a bright light or laser.

At Summerstown Dental Centre, we only offer home whitening as we feel that this is the safest and most effective method with good results that last longer than other methods.


What does tooth whitening do?
Tooth whitening can be a highly effective, yet very simple way, of lightening the colour of teeth without removing any of the tooth surface. It cannot make a colour change, but lightens the existing colour.

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What does the procedure involve and how long does the procedure take?
First of all you will need 2 or 3 visits. We will need to make a mouthguard and take impressions for this at the first appointment. Once we have started the treatment, you will have to continue the treatment at home. This will mean applying the bleach regularly over 2-4 weeks for 1-2 hours at a time.

Why would my teeth need to be bleached?
Everyone is different; and just as our hair and skin colour varies, so do our teeth. Some teeth have a yellowish tinge, some are more beige – very few are actually ‘white’. Teeth also yellow with age can become stained on the surface by food and drinks such as tea, coffee and blackcurrant. Calculus (tartar) can also affect the colour of the teeth. Some people may have staining inside their teeth. This can be caused by certain antibiotics or tiny cracks in the teeth, which take up the stain.

Will I be happy with the results?
Treatment results may vary depending on the original shade of the teeth. Teeth will tend to darken slightly over time. The effect lasts for around 1 to 3 years, although sometimes it can last longer. Some people find that their teeth are sensitive for the first few days after treatment, but this wears off after a short while.


What about home kits?
Over-the-counter kits are not recommended as they contain only a small amount of hydrogen peroxide which makes the product less effective. Some also contain mild acids, while others are abrasive. Although these products are cheaper, whitening is a complicated treatment procedure and should only be carried out by a dentist after a thorough examination and assessment of your teeth. It is very important to follow the instructions we give you, and to make sure that come for any follow-up appointments recommended.

When might whitening not work?
Whitening can only lighten your existing tooth colour. For a change to specific chosen shade veneering is another option. Whitening also works on natural teeth. It will not work on any type of ‘false’ teeth. This includes dentures, crowns and veneers. If dentures are stained or discoloured, it may be worth visiting the dentist and asking him or her to clean them. Stained veneers, crowns and dentures may need replacing. Again, ask us.

What about whitening toothpaste?
There are now several whitening toothpastes you can buy. Although they do not affect the natural colour of the tooth, they are effective at removing staining and therefore improving the overall appearance of the tooth. Whitening toothpaste may also help to keep up the appearance, once teeth have been professionally whitened.