The most common time for orthodontic treatment is between the ages of 11 and 15, and for good reasons. By this time, most if not all of the permanent teeth have erupted and are in place. Misaligned teeth and bad bites can easily be detected. These problems will not correct themselves. This is the best time to seek orthodontic treatment.
Kids at this age feel braces are cool! It is common for adolescents in this age range to undergo orthodontic treatment, so they are easily convinced to wear braces. We have all heard of the terrible twos, there are also the terrible teens! Early in adolescence is when young people are most cooperative. It is this cooperation that allows orthodontic treatment to finish in as short a time as possible.
Most importantly, children at this age are growing rapidly, and orthodontists can take advantage of this accelerated growth to help shape the bite and teeth correctly.