Essential Toothcare Prevent yellowing

Smoking is a prime cause of yellowing, but some people also like to avoid rich-colored food and drink, such as black coffee and red wine. However, antioxidants in red wine may help prevent gum disease according to one study. To keep yellowing from worsening, have your teeth cleaned by a professional every six months. Don’t use commercial whiteners—bleaching agents can irritate inflamed gums.