A smile is much more than a cheerful expression, writes author Marianne LaFrance in her new book "Lip Service." The smile, she suggests, "is a social magnet, a trustworthiness meter, a device for ...

I remember the exact moment I decided to stop smiling with my teeth. I took a gorgeous selfie with my bestie — back before "selfie" was even a word, when you posed in front of a digital camera bought ...

Of course everyone wants bright white teeth. But the benefits of a beautiful smile are more than just cosmetic. Researchers have found links between poor oral health and conditions that involve the ...

We all brush, we all floss, we all diligently rinse with anti-bacterial mouthwash twice a day (well…maybe not twice a day)–and despite all that upkeep, our teeth can look less-than-luminous sometimes.