Tooth-brushing reigns supreme. But fluoride in tap water is a good safety net https://www.economist.com/science-and-technology/2025/03/14/what-is-the-best-way-to-keep-your-teeth-healthy?taid=69be1c78363d3f000106963d&utm_campaign=editorial-social&utm_content=discovery.content&utm_medium=social-media.content.np&utm_source=voante