Effect of protraction headgear on Class III malocclusion.

摘要: Ten patients with skeletal Class III malocclusion in the early mixed dentition who were treated maxillary expansion appliance and protraction headgear compared reasonably matched controls. Significant orthopedic effects found after as little 6 months of treatment. Cephalometric analysis revealed that correction was primarily a result forward downward movement maxilla backward rotation mandible. The clinical one patient this is used to demonstrate importance force magnitudes directions, well design appliance, success