Your oral health is affected by what you eat, so it’s important to be aware of your intake of foods that are high in fat and sugar, which play a major role in the development of tooth decay. When you eat or drink, especially products with sugar or starch, it produces plaque acid, which attacks teeth for around 20-30 minutes after eating. So, it’s not so much the amount of sugar and starch you eat, but the frequency.
To limit your teeth's exposure to acid, it’s best not to snack between meals, or to limit snacking, eating healthy food such as nuts, raw vegetables, cheese and fresh fruit. Fluoridated water and unsweetened tea are also recommended, as well as chewing sugar-free gum, which will stimulate saliva production after eating and help neutralise acid more quickly.