Abstract
Background: The aim of this study was to evaluate the effects of activator and Twin Block appliances on the patient’s profile. To evaluate skeletal, dental and soft tissue changes after treatment of Class II division 1 malocclusion with activator and Twin block appliances. Methods: The study included 30 skeletal Class II patients, 15 girls and 15 boys, mean age: 10.5 ± 0.15 years who were randomly allocated to one of two functional appliance treatment groups. Pretreatment (T0) and post functional appliance therapy (T1) lateral cephalograms of 30 patients were evaluated. The skeletal, dentoalveolar and soft tissue changes were evaluated in both groups on standardized lateral cephalograms taken with the same cephalostat before (T0) and after (T1) functional appliance therapy. The groups were compared at T0 and T1 using analysis of variance, and treatment/observation differences (T1−T0) were evaluated with the Kruskal–Wallis test. The Student’s t test was used, with a significance level of P
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