Types of Orthodontics: Palatal Disjunctor and Extraoral Traction Mask. Ref.: 07
Types of orthodontics: palatal switch and extraoral traction mask. The palatal switch is used to expand the palate in patients who have not yet completed their growth spurt due to having a palate that is too narrow. The other type of dental appliance, the extraoral traction mask, is used to traction the maxilla in cases of an underdeveloped maxilla or in patients who have not finished their growth phase.