Daffodil International University
Science & Information Technology => Science Discussion Forum => Topic started by: shahina on March 09, 2015, 09:39:18 AM
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Tooth whitening can be a very effective way of lightening the natural colour of your teeth without removing any of the tooth surface. It cannot make a complete colour change, but it may lighten the existing shade.
‘Laser whitening', it is not a laser that is used. Gel is painted onto teeth and then a light is shone onto the gel to speed up the whitening reaction.