Two-phase treatment simply means that the treatment is carried out in two stages. The first is the interceptive orthodontic phase and the second is the comprehensive orthodontic phase.
Most patients begin orthodontic treatment between ages 9 and 16, but this varies depending on each individual. Because teenagers are still growing, the teen years are often the optimal time to correct orthodontic problems and achieve excellent results.
Most orthodontic problems are inherited. Examples of these genetic problems are crowding, too much space between teeth, protruding upper teeth, extra or missing teeth and some jaw growth problems.