[Set-up: method review and implementation of a new protocol]

At present the set-up occupies an important role in orthodontic therapy and is a valid help both at diagnostic and therapeutic level. The intent of this work is to illustrate the set-up execution technique in its principal passages, giving some useful indications to realize the correct dental displacements. For this reason it's necessary to insert some contrivances, which allow to control dental displacements into the three space dimenions. In this way it's possible to obtain an exact and valid set-up which can be destinated to many employments in orthodontic therapy.