Diagnosis and treatment leading to the improvement of a patient’s craniofacial dysfunction and/or dentofacial deformity including anatomical, functional and aesthetic relationships. Treatment usually, but not necessarily, utilizes fixed orthodontic appliances. Adjunctive procedures, such as extractions, maxillofacial surgery, nasopharyngeal surgery, myofunctional or speech therapy and restorative or periodontal care, may be coordinated disciplines. Optimal care requires long-term consideration of patient’s needs and periodic re-evaluation. Treatment may incorporate several phases with specific objectives at various stages of dentofacial development.