Having your teeth whitened is very fashionable: you want immaculate teeth to display a star smile, like in advertisements!
Yes, but here it is: according to a recent study conducted by Stockton University (in the United States), tooth whitening could prove to be dangerous for teeth and in particular for dentin, a calcified tissue which is located under the enamel and which covers the dental pulp.
American researchers have discovered, through various experiments, that hydrogen peroxide (a substance often used to whiten teeth) degrades the proteins that make up dentin and especially collagen – dentin is estimated to be made up of 70% salts. minerals and 30% collagen.
Gradual destruction of collagen
“Our work shows that the processes currently used to whiten teeth progressively deteriorate the collagen that makes up dentin; we do not yet know if this process is irreversible ”specify the scientists, who presented their work at the last annual congress of the American Society for Biochemistry and Molecular Biology.
In France, a decision published in the Official Journal on August 9, 2013 ruled that “the placing on the market, distribution, manufacture, holding with a view to sale or distribution […] of products […] intended for use on the external face of teeth with a view to whitening or lightening them, and whose hydrogen peroxide concentration is greater than 0.1% and less than or equal to 6%, are suspended until their compliance with the cosmetic regulations applicable to them ”.
In short, it is better to ask your dentist for advice before pushing open the door of a “smile bar” …
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Teeth care: the 6 worst enemies of your white teeth
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