Three-dimensional evaluation of the efficacy of Powerscope appliance in treatment of skeletal Class 2 malocclusion: A prospective clinical study

Abstract

Objectives: This study was conducted to evaluate the efficacy of Powerscope appliance in the treatment of skeletal Class II patients by three-dimensional image. Subjects and methods: This study was conducted on 14 orthodontic patients with a mean age of 15.39 ± 1.25 years old. The study included post-pubertal female patients with skeletal Class 2 of ANB angle greater than 4° due to the retruded mandible. Cone-beam computed tomography was made before (T1) and after (T2) installation of the Powerscope appliance. The images were imported into Invivo dental software version 5.2 for the measurements. The collected data were tabulated and statically analyzed using Statistical Package for the Social Sciences (SPSS) version 23. Paired t-test was used to study the changes after treatment. The significance level was set at ≤ 0.05. Results: Results showed statistically significant changes regarding skeletal and dental parameters. Conclusions: (1) Powerscope appliance provides an effective tool for the treatment of skeletal Class II adolescent patients. (2) Effects of Powerscope appliance were mainly dental with lesser skeletal effects. (3) The skeletal changes were seen in the mandibular base with minimal maxillary skeletal effects.

Comparative evaluation of treatment effects between two fixed functional appliances for correction of class II malocclusion

“…The resultsthat in Power Scope group, except for LAFH, LAFH/TAFH, and Corpus Height; PFH (Posterior facial height), and ramus height, there were statistically significant changes in all skeletal linear measurements, which might be attributed to distal migration of maxillary molars generating a wedging effect. This conclusion was consistent with a prior study that found a modest rise in AFH (Anterior facial height), PFH, and ramus height, but none of these changes were significant [3].…”

“…Choice of treatment Depends on the associated properties Deformation, such as the amount of anteroposterior magnitude Inconsistency, age of patient and his compliance, psychological Effects, fiscal conditions and time of treatment. Many treatments modalities have been offered for such cases, including removable functional appliances such as the Harvold activator, bionator, and Twin block, as well as stationary appliances such as Herbst, Jasper Jumper, Advansync, and Power Scope [2][3][4]. Emil Herbst showed the first fixed bite leaping device for Class II treatment.…”

“…Emil Herbst showed the first fixed bite leaping device for Class II treatment. It was still popular in 1909, although it has the disadvantage of being inflexible, which limits lateral mandibular movements and oral hygiene maintenance [3]. Evolution of fixed functional appliances over years led to introducing newer appliances with better results in noncompliant patients.…”