Inclusion Criteria:  For the study group it is as follows:  Patients with skeletal Class III association (ANB < 0°) Maxillary insufficiency patients Patients with ongoing growth development Patients who have used a 'Petit type face mask' for anterior positioning of the maxilla  For the control group it is as follows:  Patients with skeletal Class III association (ANB < 0°) Maxillary insufficiency patients Patients with ongoing growth development Patients who have not had any orthodontic treatment  Exclusion Criteria:  Patients with a congenital anomaly or a craniofacial deformity Patients who have undergone orthodontic treatment Patients with tooth extraction or tooth loss Patients with a history of trauma Patients who have completed growth development (patients with Ru on wrist film)