Why You’re Teeth-Whitening Products Are Ruining Your Teeth… And 7
Head to the pharmacy and stroll down the toothpaste isle and you’ll find an entire section devoted to teeth-whitening products. People want to have white teeth, just like the movie stars or like we did when we were young. We start out with white teeth as children, but as we get older and our adult teeth grow, there is a discernible yellowish hue to those once pearly whites. By the time we are 50, our teeth start to yellow in earnest. What causes this change in color? The yellowing of teeth is partly triggered by changes in mineral structure. Your tooth enamel becomes less porous. The enamel then becomes more susceptible to picking up stains from the foods you eat, such as tea, coffee, tobacco, wine, and cola. Even mouthwash can color the teeth if it contains a chemical called chlorhexidine. Another cause of tooth yellowing is the use of tetracylines, a commonly prescribed antibacterial medication.