ANNOUNCER: More and more, people are getting their water from this rather than the tap. But the cost may be higher than they realize. Stephen...

ANNOUNCER: Dentists say that flossing is essential for a healthy mouth, but you need to make sure you're not doing more harm than good STEPHEN...

ANNOUNCER: Brushing your teeth - it's not just doing it that counts, but how you do it. STEPHEN TYMPANICK, DDS: Most people are brushing too hard...