Nearly 4 million people in the U.S. have braces — and some of your favorite celebs have sported them too. Some have chosen more secretive forms, like Invisalign. Others have opened up about needing a ...

Braces are often associated with teen growing pains, acne and bad haircuts. But the market for adult braces is booming. Currently, about 32% of the patients getting orthodontic treatment in the U.S.