Clear aligners, or “invisible braces,” are nearly invisible plastic trays that fit over your teeth and exert pressure to shift mis-aligned teeth and straighten them. These aligners are commonly used for adults and older teens with mild to moderate crowding who wish to straighten their teeth without the use of metal brackets. These aligners are worn nearly the entire day and only taken out for meals. Clear aligners are comfortable and affordable, making them a great cosmetic alternative to the traditional metal braces.