Why vitamin D is crucial for healthy teeth
Vitamin D plays an essential role in bone metabolism and calcium absorption . Scientific studies show that vitamin D deficiency is associated with an increased risk of caries in children and pregnant women.
In a prospective Danish study, 315 pregnant women received 2,400 international units (IU) of vitamin D daily , while a comparison group received only 400 IU and a placebo. Children born to mothers with higher levels of vitamin D supplementation developed 50% fewer enamel defects than children in the other groups.
Another meta-analysis of 2,827 children showed that adequate vitamin D levels correlated with a lower risk of caries. A systematic review also confirmed that good vitamin D levels in pregnant women significantly reduce their children's risk of caries .
How vitamin D can prevent tooth decay
In addition to its role in calcium metabolism , there is evidence that vitamin D stabilizes the maturation of tooth enamel . Adequate intake could therefore not only strengthen bone structure but also support better tooth resistance to acid attack.
Dentists should therefore ensure that patients have adequate vitamin D levels and, if necessary, recommend supplementation. The German Nutrition Society (DGE) recommends:
• Adults & pregnant women : 800 IU vitamin D daily
• Infants : 400 IU vitamin D daily
In certain cases, higher dosages may be necessary for optimal results.
Sources:
1. Nørrisgaard PE, Haubek D, Kühnisch J, Chawes BL, Stokholm J, Bønnelykke K, et al. Association of High-Dose Vitamin D Supplementation During Pregnancy With the Risk of Enamel Defects in Offspring: A 6-Year Follow-up of a Randomized Clinical Trial. JAMA Pediatr. 2019;173(10):924–930.
2. Hujoel PP. Vitamin D and dental caries in controlled clinical trials: systematic review and meta-analysis. Nutr Rev 2013;71(2):88–97.
3. Cagetti MG, Wolf TG, Tennert C, Camoni N, Lingström P, Campus G. The Role of Vitamins in Oral Health. A Systematic Review and Meta-Analysis. Int J Environ Res Public Health. 2020;17(3):938.
