Orthodontic treatment is very popular and many children, teenagers and adullts are currently under orthodontic treatment in Australia. The main objective of Orthodontic treatment is to correct a malocclusion, to straighten teeth and to produce a teeth arrangement that enables the correct functions of mastication, speech, deglutition and respiration. Moreover it produces a beautiful smile. The ideal treatment age varies and should be tailored individually. Most of the treatments will be commenced when all permanent dentition has erupted, but in many cases an early intervention is the best way to go.