A Cephalometric Evaluation and Comparison of Skeletal, Dentoalveolar, and Soft Tissue Changes Brought about by the Forsus Fatigue Resistant Device and PowerScope Fixed Functional Appliance

Abstract

Background: Though studies have been conducted on the PowerScope, not many researches are available in the literature which compare its effects with other fixed functional appliances. Therefore, the aim of our study was cephalometric evaluation and comparison of the skeletal, dentoalveolar, and soft tissue changes brought about by the Forsus Fatigue Resistant Device and PowerScope appliance. Materials and Methods: Pre and Posttreatment cephalometric records of 20 patients with Class II Division 1 malocclusion treated with fixed functional appliances (Forsus Fatigue Resistant Device and PowerScope) were compared. Values of various cephalometric parameters were used to evaluate the skeletal, dental, and soft tissue changes. Wilcoxon signed-rank test (intragroup comparison) and Mann–Whitney U test (intergroup) were used to see significant differences in the parameters ( P ≤ .05). Results: Both the appliances were successful in correcting the Class II discrepancy. Skeletal changes were seen significantly in both the groups, though they were more in the Forsus patients. Dentoalveolar changes were predominantly seen in PowerScope patients. Also, an improvement in soft tissue profile was seen in both the groups. Conclusion: From our study, we concluded that the PowerScope and the Forsus Fatigue Resistant Device are equally good options for the correction of skeletal Class II malocclusion due to a retrognathic mandible, as they achieve changes in all the three aspects: skeletal, dentoalveolar and soft tissue.

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 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 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.…”

“…The duration of treatment using Powerscope appliance in this study was 6 months, similar duration was reported by previous studies (13)(14)(15)(16)(17) using Powerscope appliance. Other studies (18,19,23,24,28) reported a varied duration of Powerscope treatment ranging from 5 to 9 months until reaching a Class I molar relationship. In this study, a specific duration was used for fixation of the treatment time and precise evaluation of the appliance.…”

Three-dimensional evaluation of PowerScope appliance assisted with low-level laser therapy on mandibular changes in the treatment of skeletal class 2 malocclusions: A prospective clinical study.

“…do not agree with Arora et al (14) and Nishanth et al (7) who reported non significance value of both measurements after using PowerScope appliance and in agreement with Kaur et al (15) and Shendy et al (16) who reported significant decrease in SNA angle and significant increase in SNB after using PowerScope appliance.…”