Clear plastic aligners are used in the Invisalign system to straighten teeth in 18 to 30 two-week sessions. These "invisible braces" adjust the teeth in increments.
An alternative to traditional braces, Invisalign straightens your teeth with a series of clear custom-molded aligners. Invisalign can correct some, but not all, orthodontic problems.
Invisalign is a method of orthodontic therapy promoted as an "invisible" way of straightening teeth without using traditional braces. It instead uses a series of clear custom-fabricated aligners designed to gradually and sequentially move teeth to their desired positions.