Cephalometric Evaluation of Dentoskeletal and Soft-tissue Changes with Powerscope Class II Corrector

Abstract

Objectives:The objective of the study is to assess the skeletal, dental, and soft-tissue effects of PowerScope fixed functional appliance in Class II malocclusion. Materials and Methods: Fifteen late adolescent Class II subjects (CVMI Stages 5 and 6) were treated with fixed mechanotherapy and PowerScope fixed functional appliance. Student t-test was used to compare the cephalometric changes produced before insertion of appliance (T1) and 6 months after the treatment with this appliance (T2). Results: Maxillomandibular relationship improved with significant lengthening of the mandible. There was retroclination of maxillary incisors, proclination of mandibular incisors, extrusion, and sagittal displacement of mandibular molars and clockwise rotation of occlusal plane. Conclusion: PowerScope is effective in correcting Class II malocclusion with a combination of dentoalveolar (primarily) and skeletal changes. abstRactThis is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.

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

“…Regarding the maxillomandibular relationship, there was a statistically significant (P ≤ 0.05) decrease of ANB angle that accounted for the minimal improvement of the sagittal intermaxillary jaw relationship. This was agreed with the results of studies (11,14,16,17,19,23,24,28) using PowerScope appliance and studies (20,21,22) using MARA, FFRD, and TFBC appliances. While a study (29) using Eureka Spring found no statistically significant change in the ANB angle.…”

“…There was proclination of the lower incisor with a statistically significant increase of IMPA by 8.65˚ ±5.38˚, this agreed with the results of studies (11,23,14,16,17) using Powerscope appliance in addition to studies (20,25,29,21,27,22) using MARA, Churro Jumper, Eureka Spring, FFRD, SUS 2 and TFBC appliances. The findings were against the results of studies (28,24) using the Powerscope appliance, which showed no change in the lower incisor inclination.…”

“…There was a statistically significant (P ≤ 0.05) retroclination of the upper incisor with the decrease in U1-SN, which agreed with the results of Powerscope studies (14,23,24,28) in addition to studies (25,26,21) using Churro Jumper, FNFS, JJ, and FFRD appliances. On the contrary, studies (11,19,16,17) using Powerscope˚ appliance and a study (22) using TFBC showed no change in the upper incisor inclination.…”

“…There was a statistically significant (P ≤ 0.05) decrease in SNA angle which indicated the effect of Powerscope appliance on the restriction of the maxillary base that was agreed with the results reported by other Powerscope studies (23,24,16) in addition to studies (25,26,27) using Churro Jumper, Forsus Nitinol Flat Spring (FNFS), Jasper Jumper (JJ) and Sabbagh Universal Spring 2 (SUS 2) appliances. On the contrary, studies (11,14,18,19,17) using Powerscope appliance and other studies (20,21,22) using Mandibular Anterior Repositioning Appliance (MARA), Forsus Fatigue Resistant Device (FFRD) and Twin Force Bite Corrector (TFBC) appliances showed no statistically significant changes happened to SNA angle and consequently to the maxilla.…”

Evaluation of sagittal changes in Class II Div 2 patients with decelerating phase of growth by PowerScope appliance: A retrospective cephalometric investigation

“…Another study by Malhotra et al . [18] evaluated the effects of PowerScope in adolescents with CVMI stages 5 and 6. There was a significant lengthening of the mandible and the changes brought about were both dentoalveolar and skeletal in nature.…”