Orthotropics® requires many years extra training; also guiding growth is more complex and takes longer than extractions and mechanics. The success of treatment is largely dependent on the cooperation of the child and the support of their parents during the twelve to eighteen months full time treatment with appointments every two to four weeks. Subsequently they will require two or three years night-time training with appointments every six to twelve weeks. This is why it is not really suitable for those from, poorly organised households, broken families or those who rely on nannies to bring their children. Currently it costs nearly twice as much as orthodontics placing it at the top of the scale except for surgery.