The age at which treatment should begin orthopedics or orthodontics depends on the patient having problems, it is sometimes desirable to begin as soon as possible (4 or 5 years); sometimes it is best to wait until 8 or 9 years and others, wait until the complete replacement of teeth (around 12 or 13 years). From there there is no age limit for orthodontic treatment as it is equally effective regardless of the patient's age.