Dementia isn’t inevitable—and oral health belongs on the prevention roadmap. Alzheimer’s develops over decades of vascular, metabolic, and inflammatory stress, with poor oral health independently linked to higher risk. This keynote positions the dental operatory as an early-warning system for brain health, connecting dysbiosis and inflammation to neurovascular injury. Attendees will gain a practical playbook to identify red flags, reduce oral inflammation, support airway and sleep, and apply targeted prevention strategies that protect their own health while extending patients’ brain span.