Why Teeth Whitening Can Sometimes Be Too Much of a Good Thing
The $1.4 billion that Americans spend each year on tooth whitening products and procedures might be doing more harm than good in some cases.
In fact, bleaching one's teeth too much -- an increasingly common habit as Americans yearn for that perfectly pearly set of teeth -- might actually make teeth appear darker, in addition to a number of other less-than-desirable effects.
According to a November 24 Daily Mail article, teeth that have been whitened too much will appear darker because over-whitening makes them more transparent, meaning that the mouth's dark shadows show through them.
It's not just the appearance of teeth that is compromised by over-bleaching. The Daily Mail reports that over-bleaching results in brittle, hypersensitive teeth, receding gum lines and even the permanent lo...









