It is Tooth Decay.
It is estimated that more than half of children aged 5-17 years have it!
Dentists have a saying, 'Snack and sip all day, risk decay.' Constantly bathing the teeth in sweetened beverages and unhealthy snacks is like providing an all-you-can-eat buffet for the bacteria in your mouth -- the bacteria that cause tooth decay.
So here are some meal and snacking tips to keep tooth decay at bay:
More information on this subject can be had from the American Dental Association link on oral health.