Cephalometric Changes Following Maxillary Expansion with Ni-Ti Leaf Springs Palatal Expander and Rapid Maxillary Expander: A Retrospective Study

Background: The aim of this study is to evaluate and compare, through bidimensional cephalometry, skeletal dental changes obtained from a rapid maxillary expander (RME) Ni-Ti leaf spring (Leaf) compare them with an untreated control group. Methods: Records consisted lateral cephalograms before after expansion patients that underwent orthodontic treatment at the Department Biomedical, Surgical Dental Sciences. Leaf group 9 males (mean age = 7.5 ± 0.9 years old) 11 females 8.2 0.6 old). RME present was composed 7.8 12 8.1 0.5 Digital were traced using Dolphin Imaging software v.11.1 (Dolphin Management Solutions; Los Angeles, CA, USA), which calculated all reported measurements. Each subject assigned random identification number, examiner blinded when measuring. difference between two experimental times in groups evaluated Student’s t-test for dependent variables. evaluation each variables used perform one-way ANOVA test three groups. Results: No statistically significant noted, apart angle upper incisor SN PP planes, showed average decrease 3.25 2.55, respectively, lower incisors mandibular plane, increase 2.85 degrees. no Conclusions: It appears similar effects such as changes.