What role does fluoride play in the diet?

Fluoride plays a crucial role in dental health, primarily by strengthening tooth enamel. When incorporated into the structure of enamel, fluoride ions help to remineralize areas that have begun to demineralize due to the actions of bacteria in the mouth. This process makes the enamel more resistant to decay and can even repair early stages of tooth decay, thus reducing the risk of cavities.

Fluoride's effectiveness in preventing dental caries has led to its addition to public water supplies and dental care products, emphasizing its importance in maintaining oral health. The other options are not relevant to fluoride's specific benefits, as they pertain to areas not directly influenced by fluoride's action in the body.