Changes Of Oral Functional Space And Oropharyngeal Airway Dimension On Skeletal Mandibular Retrusion Patients Used Jasper Jumper Appliance.

Class II division 1 is a common malocclusion in clinic. It has great unfavorable effects on the oralfacial morphology and function. Early treatment with functional appliances can stimulate dental, occlusal, skeletal and facial development.Objectives: 1. To study Changes of oral functional space on skeletal mandibular retrognathic growing patients used Jasper Jumper appliance.2. To study effects of Jasper Jumper appliance on oropharyngeal airway dimension in mandibular retrognathic growing patients.Methods: 30 early skeletal mandibular retrusion patients were selected randomly treated by Jasper Jumper appliance for 4-6 months. All patients were made cephalometric radiograph preand posttreatment. Positions of hyoid and soft palate, the dimensions of oropharyngeal airway and oral functional...