What is true about water fluoridation?

Water fluoridation is a public health measure that provides beneficial effects for individuals of all ages. The key reason that it strengthens enamel at any age is due to the ongoing process of enamel remineralization, where fluoride helps to incorporate into the structure of tooth enamel, making it more resistant to acid attacks from bacteria and plaque. This process does not cease after the permanent teeth erupt; rather, fluoride can continue to play a role in the maintenance of tooth enamel throughout a person’s life.

It's important to clarify that although water fluoridation is especially beneficial for children, as their teeth are still developing, adults also reap benefits from fluoride exposure. It not only helps in improving the strength and durability of already eruptive teeth but also aids in preventing dental caries across all age groups. Therefore, the assertion that it strengthens enamel at any age underscores the extensive positive impact of fluoride in water on oral health.