Human teeth chew through a lot of material over the decades, and years of exposure to stain-causing pigments, dyes, and tannins can leave a smile with unsightly stains and discoloration that will not respond to conventional oral hygiene methods. Fortunately, professional teeth whitening treatments from your dentist can lift even stubborn stains and discoloration and leave a smile up to eight shades brighter. Here’s a brief guide to how the process works and how many treatments you may need.
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