Two-Phase orthodontic treatment is a very specialized process that encompasses tooth straightening and physical, facial changes. The major advantage of two-phase treatment is to maximize the opportunity to accomplish the ideal healthy, functional, aesthetic result that will remain stable over time.
During Early Treatment or Phase I, the growth relationships of the upper and lower jaws can be guided and enhanced with appliance therapy. Initiating orthodontic therapy when a child is in early to mixed dentition can minimize the need for complex orthodontic treatment, possibly eliminating the need for extractions and/or orthognathic surgery in the future. Early intervention can make the completion of treatment less time-consuming and far less costly.
After the Phase I treatment has been completed, the remaining teeth are then allowed to erupt during a resting period between phases. Retention and/or tooth guidance appliances may be recommended at the end of treatment. It is important to understand that at the end of Phase I treatment, teeth are not in their final positions. Selective removal of certain primary teeth may be in the best interest of enhancing eruption during the resting phase.
The second phase of treatment is initiated when all permanent teeth have erupted and usually requires braces. The majority of Early Treatment cases benefit from Phase II treatment, which is intended to position all of the teeth in an ideal position where they will be in harmony with the face and other teeth. With this equilibrium established, the teeth will function properly, stay healthy and look attractive.