[Logical sequence of orthodontic planning: evaluation of T.M.J. in an orthodontic check-up].

The Author after having reviewed the causes that in the past have been responsible of the neglecting of mandibular dysfunction in children, points out the need of TMJ evaluation during the orthodontic check-up to this purpose he suggests to employ a screening questionnaire and a clinical examination; further exams would be required only when the diagnosis points out a dysfunction or when the child shows a functional problem or a malocclusion a risk.