IRCT20200124046244N1 IRCT 2020-07-04 Kerman University of Medical Sciences “Cephalometric evaluation of dentoalveolar and skeletal changes of upper and lower jaw and pharyngeal airway space changes after growth modification treatments.” “Cephalometric evaluation of dentoalveolar and skeletal changes of upper and lower jaw and pharyngeal airway space changes after growth modification treatments of class III patients in different stages of cervical vertebrae maturation, with Face-mask appliance.” 2011-03-20 anticipated 42 Complete https://irct.ir/trial/45295 interventional Randomization: N/A, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Blinding description: Residents are not aware of the type of treatment performed. N/A Class 3 skeletal malocclusion. Intervention group: Face mask group 2- face mask device and hyrax expansion device. No - There is not a plan to make this available Justification or reason for not sharing IPD is As the result of the data will be published as article , it is not necessary to publish the data file