Dental and Skeletal Changes in the Upper and Lower Jaws after Treatment with Schwarz Appliances Using Cone-Beam Computed Tomography

摘要: Objective: The purpose of this research was to use cone-beam computed tomography (CBCT) images evaluate dental and skeletal changes in upper lower jaws after treatment with Schwarz appliances. Materials Methods: 28 patients Angle Class I molar relationships crowding were randomly divided into two groups – 14 non-expanded expanded patients. 3D-Rugle CBCT software used measure various reference points before (T0) during the retention period approximately 9 months 6 12 month expansion (T1). Cephalometric cast measurements both groups. To test whether there any significant differences between control at T0 T1, Mann-Whitney U-test used. Results: arch (including tooth root apices) had jaws. Alveolar bone up 2 mm apical cementoenamel junction (CEJ) detected. midpalatal sutures separated some c...