Global Public Health and fluoride as a vaccine for tooth decay examines the social and economic impact of cavities, the third most common disease worldwide. It advocates for preventive actions like dental sealants and fluoride use to reduce treatment costs and improve oral health globally. The book summarizes 75 years of dental work and calls for a worldwide campaign, Black March, to promote oral health education and reduce tooth decay. By combining preventive measures with advanced dental treatments, it aims to enhance quality of life and social well-being.