How many people have braces?

As of 2015, more than 4 million people in the United States have braces, as reported by Humana. Although many people associate braces with children, 25 percent of those with braces are adults.

Children usually need to wear braces for about 2 years, and adults may need to wear braces for 3 to 4 years, according to Humana. Braces can be made of ceramic or metal, and clear brackets are available at extra cost for people who are conscious of the appearance.

Braces can correct a variety of orthodontic issues, such as crowding, extra space and bite alignment issues. Dentists may apply braces for simple cosmetic issues, but an orthodontist is recommended to treat complex or advanced alignment problems.