The skeletal influence of functional appliances on craniofacial growth is still controversial. The main effects of activator
treatment are dento-alveolar changes. In an attempt to manage/control or to obtain some dento-alveolar changes, a variety of
designs for constructing activators are proposed. The purpose of this article is to present a Modified Teuscher Activator which
allows excellent control of upper incisor inclinations. Even more, in patients who need incisors torque it is possible to induce
active palatal root torque with this appliance.
(Rev Esp Ortod. 2006;36(3):169-177)