Final answer:
It is true that fluoride in water helps in reducing cavities by strengthening tooth enamel and exhibiting antimicrobial properties.
Step-by-step explanation:
The consumption of the mineral fluoride in water has lowered the rate of cavities. This is true. Fluoride aids in the protection of teeth by reacting with the tooth enamel to form fluorapatite, which is more resistant to acid attacks resulting from the fermentation of sugars by oral bacteria. As a result, it strengthens the enamel and prevents tooth decay. Regular exposure to fluoride, such as through community water fluoridation, provides consistent and optimal prevention against cavities. Moreover, fluoride's antimicrobial properties contribute to this effect by reducing the metabolic activity of bacteria that cause dental caries.