7.Preventing Teeth Stains
As we age, the outer layer of tooth enamel wears away. The underlying layer, called dentin, is yellower. That’s why it’s important to try to avoid staining teeth in the first place, especially after whitening. If you take care with foods and drinks that discolor teeth, the results of whitening may last up to one year. Whitening teeth too often could make them look translucent and blue, so you’ll want to maintain your new smile.
8.Foods that Cause Teeth Stains
There’s another reason to watch what you eat. Some common foods can discolor teeth. Here’s an easy way to tell if a food might be at fault: Anything that can stain a white cotton T-shirt can stain teeth, say dentists. Coffee stains teeth, for example. Other top offenders are beverages such as tea, dark sodas, and fruit juices. These teeth stains develop slowly and become more noticeable as we age.
