This paper presents the effectiveness of #RAMPA (Right Angle Maxillary
Protraction Appliance) system, i.e. RAMPA combined
with ROA (RAMPA Oral Appliance), on human maxillae by analyzing the
#deformations from #protraction forces with finite element method. In
addition, the dimensional changes of the upper airway, skeletal facial
and #hyoid position changes by using cone-beam computed #tomography in
patients who were treated with RAMPA therapy were assessed clinically.
