According to the American and Canadian Association of Orthodontists, the ideal age for initial orthodontic assessment is around age seven (at this age, the first permanent molars and lower incisors have usually come in and cross-bites, crowding, missing permanent teeth, and some other developmental problems can be detected).
Your orthodontist will determine if and when there is a need for orthodontic treatment and if any interceptive orthodontic care is required. When treatment is begun early, the orthodontist can guide the growth of the jaws and guide incoming permanent teeth. Early treatment can also regulate the width of the upper and lower dental arches, gain space for permanent teeth, avoid the possible need for permanent teeth extractions in some cases, reduce the likelihood of impacted permanent teeth, correct thumb-sucking, and address abnormal swallowing or speech problems. In other words, early treatment can simplify later orthodontic treatment in some cases.