- A federal court ruling may end nationwide water fluoridation in the United States, prompting discussion on the future of public dental-health interventions.  
- Participants shared a new enzyme-based toothpaste formulation containing dextranase, mutanase, lactoperoxidase, lysozyme, and lactoferrin, with early anecdotal reports that it “works fine on human teeth.”  
- The formulation was contrasted with nano-hydroxyapatite toothpastes; the enzyme approach focuses on disrupting bacterial biofilms rather than remineralizing enamel.  
- A link to a detailed write-up on the biology and rationale behind the enzyme toothpaste was provided: https://bhauth.com/blog/biology/tooth%20bacteria.html  
- Channel members noted that studies indicate dry brushing (without any toothpaste) is already fairly effective, raising questions about the marginal benefit of specialized pastes.