PowerScope™ for Class II Malocclusions: A Systematic Review and Meta-analysis
Remmiya Mary Varghese, Aravind K Subramanian, Mathew T Maliael
Keywords :
Class II malocclusion, Functional appliances, Growth modulation, Malocclusion, Orthodontics, PowerScope
Citation Information :
Varghese RM, Subramanian AK, Maliael MT. PowerScope™ for Class II Malocclusions: A Systematic Review and Meta-analysis. World J Dent 2023; 14 (7):639-647.
Aim: This systematic review and meta-analysis aimed to study the effects of PowerScope™ for the treatment of class II malocclusions.
Materials and methods: The review protocol was registered in the Prospective Register of Systematic Reviews (PROSPERO) database (www.crd.york.ac.uk/prospero, protocol number: CRD42022309678). A population, intervention, comparison, outcome, and study design (PICOS) criterion was developed to aid the search strategy and determine the eligibility of studies for inclusion in the review. A thorough systematic search of various scientific databases was performed to identify relevant studies. The risk of bias tool and methodological index for nonrandomized studies (MINORS) tool were used to evaluate the risk of bias.
Results: After screening of titles and abstracts, a total of 148 articles were identified. After the removal of duplicates, 82 articles remained. Finally, six studies were selected to be included in the qualitative analysis, and three studies were further included in the quantitative analysis. All of the included studies showed a high risk of bias, and the overall quality of the methodology was determined to be moderate. The quantitative analysis showed no significant difference in the treatment effects between the intervention and control groups.
Conclusion: The qualitative synthesis showed better skeletal changes with the Forsus Fatigue Resistant Device (FRD) appliance, whereas better dentoalveolar changes were seen with the PowerScope™ appliance. However, these results were not supported by results from the quantitative analysis.
Clinical significance: It is necessary to understand the clinical treatment outcomes of PowerScope™ in the management of class II malocclusions to recommend its utilization in contemporary clinical practice.
Kalra A, Swami V, Bhosale V. Treatment effects of “PowerScope” fixed functional appliance - a clinical study. Folia Med (Plovdiv) 2021;63(2):253–263. DOI: 10.3897/folmed.63.e52892
Cozza P, Baccetti T, Franchi L, et al. Mandibular changes produced by functional appliances in class II malocclusion: a systematic review. Am J Orthod Dentofacial Orthop 2006;129(5):599.e1–599.e12; discussion e1–6. DOI: 10.1016/j.ajodo.2005.11.010
Moschos A. Papadopoulos DDS Dr med dent, https://sw-ortho.de/wp-content/uploads/2018/04/Orthodontic-Treatment.pdf (accessed 31 March 2023).
Chen JY, Will LA, Niederman R. Analysis of efficacy of functional appliances on mandibular growth. Am J Orthod Dentofacial Orthop 2002;122(5):470–476. DOI: 10.1067/mod.2002.126730
Dhiman I, Dhiman P. PowerScope—non-compliance class II corrector: a review. Int J Curr Res Rev 2017;9(7):54157–24162.
Agarwal L, Singh K, Tandon R. Treatment of class II div 2 malocclusion using PowerScope: a case report. Orthod J Nepal 2018;8(1):63–67. DOI: 10.3126/ojn.v8i1.21352
Ansari A, Jain AK, Singh A, et al. Management of skeletal class II malocclusion in non-complaint patient using Powerscope: a case report. Orthod J Nepal 2019;9(2):77–81. DOI: 10.3126/ojn.v9i2.28421
Paulose J, Antony PJ, Sureshkumar B, et al. PowerScope a class II corrector—a case report. Contemp Clin Dent 2016;7(2):221–225. DOI: 10.4103/0976-237X.183044
Savanna K, Kumar M, Ansari A, et al. Correction of class II using Powerscope appliance—a case report. Arch of Dent and Med Res 2016;2:120–125. https://www.researchgate.net/profile/Mukesh-Kumar-130/publication/348544121_Correction_of_Class_II_using_Powerscope_Appliance_-A_Case_Report/links/6002dc0b299bf140889b945f/Correction-of-Class-II-using-Powerscope-Appliance-A-Case-Report.pdf
Mittal K, Bajaj K, Bansal M, et al. PowerScope: an efficient treatment modality for skeletal class II malocclusion. JMGUMST 2017;2(3): 171–175. DOI: 10.5005/jp-journals-10057-0060
RagniTandon PC, Rohmetra A, Singh VA, et al. Management of class II malocclusion with PowerScope appliance: report of two cases. AJOHAS 2019;9:6. https://www.sdcindia.ac.in/document/docsafe/202204110607133757.pdf
Majumder P, Singh A. A case report on treatment of class II jaw discrepancy with dental crowding with powerscope appliance, https://www.academia.edu/download/63451189/IDJSR-7-3-75-7820200528-82161-vyg1y3.pdf.
Jha A, Jha S, Singh S, et al. Comparative evaluation of treatment effect between two fixed functional appliances for correction of class II malocclusion, https://ejmcm.com/article_5448_27cabdebd6e8aba40725e6c6e9424a12.pdf (accessed 31 March 2023).
Sharma P, Mohan S, Raghav P, et al. Management of a non-growing skeletal class II patient: a case report, https://www.academia.edu/download/78343661/6-1-52-335.pdf (accessed 9 April 2023).
Page MJ, McKenzie JE, Bossuyt PM, et al. The PRISMA 2020 statement: an updated guideline for reporting systematic reviews. BMJ 2021;372:n71. DOI: 10.1136/bmj.n71
Patole S. Principles and practice of systematic reviews and meta-analysis. Springer Nature; 2021.
Higgins JP, Altman DG, Gøtzsche PC, et al. The Cochrane collaboration's tool for assessing risk of bias in randomised trials. BMJ 2011;343:d5928. DOI: 10.1136/bmj.d5928
Slim K, Nini E, Forestier D, et al. Methodological index for non-randomized studies (minors): development and validation of a new instrument. ANZ J Surg 2003;73(9):712–716. DOI: 10.1046/j.1445-2197.2003.02748.x
Lagravere MO, Major PW, Flores-Mir C. Long-term skeletal changes with rapid maxillary expansion: a systematic review. Angle Orthod 2005;75(6):1046–1052. DOI: 10.1043/0003-3219(2005)75[1046:LSCWRM]2.0.CO;2
Sharshar HH, El-Bialy TH. Cephalometric evaluation of airways after maxillary anterior advancement by distraction osteogenesis in cleft lip and palate patients: a systematic review. Cleft Palate Craniofac J 2012;49(3):255–261. DOI: 10.1597/11-031
Egger M, Smith GD, Altman D. Systematic reviews in health care: meta-analysis in context. John Wiley & Sons; 2008.
Egger M, Davey Smith G, Schneider M, et al. Bias in meta-analysis detected by a simple, graphical test. BMJ 1997;315(7109):629–634. DOI: 10.1136/bmj.315.7109.629
Antony T, Amin V, Hegde S, et al. The evaluation and clinical efficiency of Power Scope: an original research. J Int Soc Prev Community Dent 2018;8(3):264–270. DOI: 10.4103/jispcd.JISPCD_48_18
Nishanth B, Gopinath A, Ahmed S, et al. Cephalometric and computed tomography evaluation of dentoalveolar/soft-tissue change and alteration in condyle-glenoid fossa relationship using the PowerScope: a new fixed functional appliance for Class II correction—a clinical study. Int J Orthod Rehabil 2017;8(2):41. DOI: 10.4103/ijor.ijor_5_17
Singaraju GS, Vannala V, Ankisetti SA, et al. Evaluation of sagittal changes in class II div 2 patients with decelerating phase of growth by PowerScope appliance: a retrospective cephalometric investigation. J Pharm Bioallied Sci 2019;11(Suppl. 2):S208–S215. DOI: 10.4103/JPBS.JPBS_299_18
Malhotra A, Negi KS, Kaundal JR, et al. Cephalometric evaluation of dentoskeletal and soft-tissue changes with Powerscope class II corrector. J Indian Orthod Soc 2018;52:167–173. DOI: 10.4103/jios.jios_102_17
Galagali SA, Shaikh AS, Hussain M, et al. Treatment effects of fixed functional appliance Powerscope in patients with class II malocclusion, https://scholar.archive.org/work/mi2wcdoiobhdpb3doqv5vtnwx4/access/wayback/http://ajms.alameenmedical.org/ArticlePDFs/11%20AJMS%20V15.N1.2022%20p%2054-61.pdf (2022).
El-Hossainy H, Al-khalefa H, Abouelnour A. Three-dimensional evaluation of the efficacy of Powerscope appliance in treatment of skeletal class II malocclusion: a prospective clinical study. Al-Azhar J Dent Sci 2022;25(2):223–231. DOI: 10.21608/AJDSM.2022.94736.1287
El-Morsy A, Abu-Shahba R, El-Hassanein E-H, et al. 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. Al-Azhar J Dent Sci 2023;26(1):91–97. DOI: 10.21608/ajdsm.2022.116618.1290
Abouelnour A, Al-Khalefa HN. Soft tissue improvement by fixed functional appliance in class II patients, CBCT study. Evaluation 6:8.
Mendigeri V, Ganeshkar S, Ramdurg P. Evaluation of effect of PowerScopeTM class II corrector on skeletal, dental and Oro-pharyngeal airway dimension in Skeletal class II cases-A controlled …, https://www.academia.edu/download/86909060/14253.pdf (accessed 31 March 2023).
Arora V, Sharma R, Chowdhary S. Comparative evaluation of treatment effects between two fixed functional appliances for correction of Class II malocclusion: a single-center, randomized controlled trial. Angle Orthod 2018;88(3):259–266. DOI: 10.2319/071717-476.1
Varghese RM, Subramanian AK, Sreenivasagan S, et al. Comparison of dentoskeletal changes in skeletal class II cases using two different fixed functional appliances: Forsus fatigue resistant device and powerscope class II corrector—a clinical study. J Int Oral Health 2021;13:234. DOI: 10.4103/jioh.jioh_246_20
Shalu S, Rai R, Sudhakar SS. Comparison of dental effects of Forsus Fatigue Resistant Device and Powerscope treatment—a cephalometric study. Annals of RSCB 2021;25(6):20667–20676. http://annalsofrscb.ro/index.php/journal/article/view/10261
Kaur GJ, Gandhi G, Khanna M, et al. 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. J Indian Orthod Soc 2022;56(4):227–236. DOI: 10.1177/03015742211004435
Shetty P, Shetty M, Chalapati M, et al. Comparative evaluation of hard-tissue and soft-tissue changes following fixed functional appliance treatment in a skeletal class II malocclusion using forsus and PowerScope. J Health Allied Sci NU 2021;11(2):87–92. DOI: 10.1055/s-0041-1722821
Kamoltham K, Charoemratrote C. Treatment effects of mandibular anterior position training versus a fixed Class II corrector in growing patients with skeletal Class II malocclusion. Orthod Waves 2018;77(4):209–219. DOI: 10.1016/j.odw.2018.07.003
Linjawi AI, Abbassy MA. Dentoskeletal effects of the forsus™ fatigue resistance device in the treatment of class II malocclusion: a systematic review and meta-analysis. J Orthod Sci 2018;7:5. DOI: 10.4103/jos.JOS_80_17
Servello DF, Fallis DW, Alvetro L. Analysis of Class II patients, successfully treated with the straight-wire and Forsus appliances, based on cervical vertebral maturation status. Angle Orthod 2015;85(1):80–86. DOI: 10.2319/102513-780.1
Goel M, Sonar S, Srivastav M, et al. Pitchfork analysis of class II correction using Forsus FRD. J Indian Orthod Soc 2013;47 (4 Suppl. 1):240–244. DOI: 10.1177/0974909820130502S
Shahid F, Alam MK, Irshad M, et al. Forsus fatigue resistant device a fixed functional appliances: an update. Intern Med J 2017;24(1):132–153. https://www.researchgate.net/profile/Mohammad-Alam-91/publication/314116604_Forsus_Fatigue_Resistant_Device_a_Fixed_Functional_Appliances_An_Update/links/58b67d0aa6fdcc2d14d3322b/Forsus-Fatigue-Resistant-Device-a-Fixed-Functional-Appliances-An-Update.pdf
Hong JS, Oh KM, Kim BR, et al. Three-dimensional analysis of pharyngeal airway volume in adults with anterior position of the mandible. Am J Orthod Dentofacial Orthop 2011;140(4):e161–e169. DOI: 10.1016/j.ajodo.2011.04.020
Mahamad IK, Neela PK, Mascarenhas R. A comparision of Twin-block and Forsus (FRD) functional appliance–a cephalometric study. IJO, https://www.researchgate.net/profile/Praveen-Kumar-Neela/publication/232698024_A_comparision_of_Twin-block_and_Forsus_FRD_functional_appliance_-_a_cephalometric_study/links/5875da0e08ae329d62219a4e/A-comparision-of-Twin-block-and-Forsus-FRD-functional-appliance-a-cephalometric-study.pdf (2012).
Janson G, Sathler R, Fernandes TM, et al. Correction of Class II malocclusion with Class II elastics: a systematic review. Am J Orthod Dentofacial Orthop 2013;143(3):383–392. DOI: 10.1016/j.ajodo.2012.10.015
Reddy P, Kharbanda OP, Duggal R, et al. Skeletal and dental changes with nonextraction Begg mechanotherapy in patients with Class II division 1 malocclusion. Am J Orthod Dentofacial Orthop 2000;118(6):641–648. DOI: 10.1067/mod.2000.110584
Jones G, Buschang PH, Kim KB, et al. Class II non-extraction patients treated with the Forsus Fatigue Resistant Device versus intermaxillary elastics. Angle Orthod 2008;78(2):332–338. DOI: 10.2319/030607-115.1
Heinig N, Göz G. Clinical application and effects of the Forsus spring. A study of a new Herbst hybrid. J Orofac Orthop 2001;62(6):436–450. DOI: 10.1007/s00056-001-0053-6