Though an orthodontist can enhance a smile at any age, there is an optimal time period to begin treatment which ensures the best result with the least amount of time and expense. The Australian Society of Orthodontists (ASO) and the American Association of Orthodontists (AAO) recommend the initial orthodontic evaluation occur at the first sign of orthodontic problems or no later than age 7.

Early evaluation provides both timely detection of problems and greater opportunity for more effective treatment. Prudent intervention guides growth and development, preventing serious problems from occurring later. When orthodontic intervention is not yet necessary, an orthodontist can carefully monitor growth and development and begin treatment when it is ideal.