"Can I see 'em?" Lala asked her baby girl about her teeth in a video. "They're here." Sosa was reluctant to show off her two new teeth and covered them with her tongue."Let's see your teeth.

Tooth decay is the most common noncommunicable disease on the planet, according to the World Health Organization. In the U.S., about half of adults have some form of gum disease, with that number ...