Why Florida Heat Is Harder on Your Teeth Than You Think

Saliva is the most underrated thing in your mouth. It neutralizes acid, washes away food particles, and delivers minerals back to your enamel throughout the day. When saliva production drops, cavity risk climbs — and in Central Florida, saliva production drops a lot.

Between the heat, the humidity, and the amount of time people here spend outdoors, mild chronic dehydration is common. Add in the things that make it worse — coffee, alcohol, and a long list of everyday medications including antihistamines and blood pressure drugs — and I see patients with noticeably dry mouths year-round, not just in August.

The pattern I look for is cavities appearing along the gumline, on multiple teeth, in someone whose brushing habits haven't changed. That's usually a saliva problem, not a hygiene problem.

A few things that help. Drink water steadily rather than in large amounts occasionally. Sugar-free gum with xylitol stimulates saliva flow and has some anti-cavity benefit of its own. Be careful with sports drinks — they're acidic and sugary, which is a rough combination for enamel when your mouth is already dry. And if you sleep with your mouth open or wake up parched, mention it to me, because that's a fixable contributor.

If you're on a medication that's drying you out, don't stop taking it. Tell me instead. There are prescription-strength fluoride treatments and saliva substitutes that make a real difference, and I'd rather adjust your prevention plan than watch cavities accumulate.