It is important to be aware of all the possible sources of sugar out there. It is not just everything that is sweet, but anything that can turn to sugar, like pieces of bread. Cutting down your sugar intake is good for cavity prevention, as well as your general health.
But what about when you have to have sugar?
The best way to avoid cavities is to prevent the sugar from staying next to your teeth. Brushing after eating sugar, rinsing your mouth with Fluoride mouth wash, or chewing sugarless gum can help. However, nothing has the effect of avoiding sugar!
Is there any kind of food that prevents tooth decay? Well, not really. Some people believe that chewing foods like apples and carrots may have some plaque removal effects, but they still contain some sugar, so any advantage is not clear.
Another group of food that causes significant damage to teeth structure is acidic food. If in frequent contact with teeth, things like limes, lemons, and grapefruits can cause serious irreversible damage (erosion) to your teeth.