Age is not a limitation for orthodontic treatment. Healthy teeth can be moved at any age. Orthodontic treatment can be successful at any age and adults especially appreciate the benefits of a beautiful smile. Currently, one out of every five patients in orthodontic treatment is over 21. Jaw surgery is more often recommended in adult orthodontic patients because their jaws are no longer growing. Adults also may have experienced some breakdown or loss of their teeth and supporting bone so that they may require periodontal treatment before, during, and/or after orthodontic treatment. Orthodontic treatment in adults may take longer than children because of the changes in bone biology and elasticity.