Tooth Whitening

Teeth whitening involves bleaching your teeth to make them lighter. It can lighten the existing colour by several shades.

What is tooth whitening?

Tooth whitening or tooth bleaching is the process of lightening the colour of human teeth. Whitening is often desirable when teeth become yellowed over time for several reasons, and can be achieved by changing the intrinsic or extrinsic colour of the tooth enamel.

Professional teeth whitening steps

Checking the shade

The dentist will first record the shade of your teeth. That is to get an idea about the degree to which your teeth have to be whitened. It will also help the dentist to figure out how concentrated the whitening solution has to be to get that shade.

Cleaning and polishing 

The dentist will clean and polish your teeth.

Cleaning your teeth also helps to remove of any existing plaque from your teeth, before whitening. The dentist will then use retractors to keep your gums, tongue, and lips from interfering with the whitening agent.


Coating with the whitening agent

Hydrogen peroxide solution, which is the best bleaching agent known for teeth whitening will be used to coat your teeth. The frontal side of your teeth will be coated, while the posterior side will be left out. This is because the purpose of whitening your teeth is just to improve the aesthetics of your smile, and the backside of your teeth doesn’t show no matter how wide you smile!

The solution temporarily opens up the pores in your teeth, penetrating them and fighting off the stains from within to whiten your teeth. The coating would stay on your teeth for nearly half an hour before the dentist decides to proceed to the next step.



Your mouth will then be rinsed, thoroughly.

All on 4 London Examination

Step One : Consultation

All on 4 London

Step Two : Whitening treatment

Checking the shade, Cleaning, and polishing, coating with the whitening agent, rinsing.


All on 4 London review

Step Three :

Enjoy your beautiful smile!

What about home kits and beauty salons for teeth whitening?

Only go to a registered dental professional for teeth whitening because whitening by people who aren’t qualified, for example in beauty salons, is illegal.

Home kits also carry risks. Talk to your dentist first before using a home kit.

What are the risks of home kits and salon teeth whitening?

Some home kits don’t contain enough whitening products to be effective. Also, if a dental professional isn’t doing the whitening, the mouthguard provided may not fit properly so some of the bleaching gel may leak out onto your gums and into your mouth, causing blistering and sensitivity.

Who can do teeth whitening?

Teeth whitening is a form of dentistry and should only be carried out by a dentist or another regulated dental professional, such as a dental hygienist or dental therapist, on the prescription of a dentist.

Some beauty salons offer teeth whitening, but this is illegal if there’s no dental professional present, and it may put your oral health at risk.


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