The biggest factor in yellowing teeth is cigarettes containing tobacco. These substances are chemicals. Other factors are food and beverages. When beverages containing caffeine-acid and foods containing sugar are consumed excessively, the whiteness of the teeth disappears. Besides, if we do not take adequate care of our teeth and neglect the use of dental floss, we can cause tartar to form. If we pay attention to what we eat and drink, and if we do regular teeth cleaning at the same time, the yellow appearance on the teeth will disappear.