27 Apr 2015

Threats to an Effective Teeth Whitening

When you’ve undergone a thorough teeth whitening at London dental practices, the end result can be a killer smile and the radiant confidence associated with it. Do you know that even with that, some factors can ruin it all?
Genes and aging
The whiteness of your teeth is determined by the thickness of your enamel, which is the protective coating for your dentin (the next layer that is naturally yellowish). This trait can be inherited and explains why some people have whiter teeth than others. Since enamel gradually wears down as you grow old, being born with thinner enamel means your dentin is more likely to show through earlier.
Nicotine in tobacco is a colourless substance that turns yellow when exposed to oxygen. When tobacco smoke is inhaled, nicotine—along with tar—percolates the enamel’s microscopic openings and settles there, resulting in yellowish or brownish teeth. They are on the outer layer though, so brushing after smoking can help remove them.
Fluoride overdose
Fluoride helps keep the teeth healthy, but in excessive quantities, it can break down your teeth’s enamel. This condition is called fluorosis, which usually results in chalky white or brown patches or lines on the teeth’s surface. You can shift to fluoride-free mouth cleaner or use a fluoride product once or twice a week to reduce consumption.


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