Teeth Whitening - how it works
How can a gel whiten teeth when they are so hard?
On the surface teeth appear to be very hard and they are. Otherwise they would wear out in no time at all. But look at teeth a little closer (with a scanning microscope) and you'll see that the enamel is actually porous. Liken it to a concrete block: very hard
but at the same time the block can still absorb water. Here is what enamel (the surface of your tooth) looks like close up when you look straight at a tooth (left image):
You can see that the enamel actually has a fibrous appearance with gaps in between. These gaps provide a path for whitening gel to get to the dentin (the layer just below the enamel). Now take that tooth, slice it from top to bottom, magnify it
and look at it side-on (right image). See how the enamel allows a path to the dentin layer . That's where the whitening actually takes place. So yes, teeth are very hard, but gel can still get in there and whiten the inner tooth with an oxidising action. All teeth
whitening (including so called 'laser' whitening) is based on the action of a gel.
How are teeth whitened?
To go after the stains on the dentin layer and re-whiten your teeth, you need an oxidising gel that penetrates the enamel. The best way to do that is to have flexible plastic moulds (called whitening trays ) that hug your teeth. You fill the inside of the tray with whitenng gel and push the tray around your teeth
where it is held in place by suction and the 'sticky' gel. Give the gel an hour or more to penetrate the enamel, oxidise those stains and the result will be whiter teeth. The longer you continue this process (you apply fresh gel in the trays for each session), the whiter your teeth will
How white will my teeth get?
Unlike 'in-chair' whitening at the dentist, you decide the final shade of your teeth. A little whiter or much whiter. It is controlled simply by the total whitening time and the strength of the gel.
Is it safe?
Yes it is. And you don't have to take our word for it. Click here for more details on safety
How does a UniWhite System work?
A Uniwhite Whitening System consists of three easy steps to whiter teeth:
Purchase our system and take impressions of your upper and lower teeth. Easy and fun to do - full colour instructions and all dental materials provided. A spare set is included if you want to practice first or make a
Put both impressions in the supplied pillow box and dial 0800 800 841 to have them picked up from your doorstep (the bag is pre-paid and pre-addressed)
||You get your custom trays back on your doorstep within days and you can start whitening your teeth with our professional strength gels. A few sessions later you'll see a
transformation. That's guaranteed!