Question

The reduction in dental cavities in the United States during the last century is partially due to a widespread increase in the intake of which nutrient?

1) Calcium
2) Vitamin C
3) Fluoride
4) Iron

Answer 1

The reduction in dental cavities in the United States is partially due to the increased intake of fluoride through community water fluoridation, toothpaste, and mouthwashes.

Step-by-step explanation:

The reduction in dental cavities in the United States during the last century is partially due to a widespread increase in the intake of fluoride. Fluoride has been proven to protect teeth from decay by rebuilding and strengthening the tooth's surface, or enamel. Community water fluoridation and the inclusion of fluoride in toothpaste and mouthwashes have contributed to the decline in cavities.