If the eyes are the window to the soul, then teeth must be the welcome mat. While that may not be an appetizing analogy, it might help explain why it's all too easy to end up with a dingy yellow smile. Just as you'd take off muddy boots before stepping on a white carpet, you should avoid the foods that can stain your pristine teeth. Keep them sparkling and welcoming by avoiding these smile-sullying foods and drinks.

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