Proper oral hygiene is of course indispensable for maintaining a bright smile, but there is one other important bit of advice: Watch what you eat and drink. Certain foods and beverages can discolor teeth. If you want to protect your pearly whites, read on for some common culprits that stain your teeth. Pasta Sauce Because of their acidity, bright red hue and tendency to cling to the teeth, the tomatoes in pasta sauce can leave your teeth vulnerable to staining. Dine on some d