Changes in digital cast measurements related with two types of rapid maxillary expanders, tooth-borne versus hybrid one

Objectives: This study compared digital casts from tooth-borne and hybrid Rapid Maxillary Expansion (RME) using 3D virtual models scanned with a 3Shape laser scanner. Methods: A total of thirty patients narrow maxilla were distributed into two equal groups sequential randomization. The hyrax group (11 females 4 males) had mean age 14.5 years, whereas the conventional (10 5 13.96 years. Cone beam computed tomography orthodontic obtained before expansion six months after last activation. Eight parameters measured, data was analyzed. Results: paired t-test used to evaluate differences between pre-expansion post-expansion measurements. Interdental distance (IDD) rotations at first molar premolars showed statistically significant increase post-treatment preoperative values, arch depth incisor inclination decrease. Furthermore, B higher postoperative values greater IDD change (P≤0.05). Conclusion: RME achieved skeletal effects broaden only slight in traditional RME. Regardless appliance, may be decreased following