Are you considering teeth whitening? If so, there are a few things you should consider before undergoing this treatment. Are You a Good Candidate for Teeth Whitening? Teeth whitening, whether by professional or over-the-counter treatment, should only be used by people with healthy gums and teeth. This is because all teeth whitening treatments contain the bleaching agent peroxide, which can cause increased sensitivity and even damage to people with tender or receding gums. If