Synopsis

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

Red algae, particularly the species Lithothamnion calcareum, is used to support dental health due to its high content of bioavailable minerals, especially calcium and magnesium. The calcium in red algae is primarily in the form of calcium carbonate, which is similar to the mineral component of human bones and teeth. Several in vitro and animal studies have demonstrated that red algae-derived calcium can help remineralize tooth enamel and may contribute to stronger teeth. For example, a study published in the Journal of Dentistry (2017) showed that a toothpaste containing red algae extract promoted enamel remineralization comparable to or better than fluoride toothpaste. Additionally, red algae contains trace minerals like phosphorus and zinc, which are also important for tooth structure and oral health.

While human clinical trials are still limited, the mechanism of action is biologically plausible, and the existing preclinical evidence supports its use. Red algae mineral supplementation is also considered safe and is used in some oral health products. However, more robust clinical evidence is needed to confirm its efficacy compared to established interventions like fluoride. Overall, the use of red algae to support the dental system is grounded in scientific rationale with moderate supporting evidence.

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