That is a great question! we found an article on webmd that might help:
“You plan meals, grab drinks, and play sports without giving much thought to your teeth. But you might not realize how food, beverages, and activities can wreck the health of your pearly whites. Twenty-five percent of U.S. adults over age 65 have lost all their teeth – here’s how you can protect your own.”
Find out here:
http://www.webmd.com/oral-health/features/your-teeth-bad-habits