There are no age limits. Teeth can be moved at any age, provided there are enough of them to allow a brace to be placed effectively. It is never too late to consider orthodontic treatment, if you would like to change your smile. The only requirement for orthodontic treatment is good dental health and a willingness to wear a brace. More adults are choosing to wear braces later on in life. In most cases orthodontic treatment does not have to be done in the teens. However, it is true that some problems are best treated earlier during active growth. Generally, teeth tend to move faster in children than adults.