Evidence supporting the use of: Trace minerals
For the body system: Teeth

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Trace minerals, such as fluoride, zinc, and copper, play vital roles in supporting dental health and the integrity of the teeth. The most well-established scientific evidence pertains to fluoride, which is known to strengthen tooth enamel and help prevent dental caries (cavities). Fluoride can be considered both a trace mineral and an essential nutrient for the maintenance of dental health. Numerous systematic reviews and public health studies have demonstrated that populations with access to fluoridated water or dental products containing fluoride have significantly lower rates of tooth decay.

Other trace minerals, like zinc and copper, have supportive but less direct roles. Zinc contributes to oral health by supporting immune function and reducing inflammation, which can help prevent periodontal (gum) disease. Copper is involved in the development of connective tissue and may support the maintenance of oral mucosa and bone, indirectly benefiting the structural support of teeth. However, the evidence for these minerals is weaker and more often based on their general role in tissue health and immunity rather than direct effects on teeth themselves.

Overall, while fluoride’s role is well substantiated, the contribution of other trace minerals to dental health is less direct and not as strongly supported by clinical evidence. Therefore, the evidence rating is moderate (3 out of 5), reflecting strong support for fluoride but only suggestive or indirect support for other trace minerals.

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