{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T14:02:39Z","timestamp":1787752959719,"version":"build-2784847793"},"reference-count":32,"publisher":"The Angle Orthodontist (EH Angle Education & Research Foundation)","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2018,5]]},"abstract":"ABSTRACT<\/jats:title>\n \n Objective:<\/jats:title>\n The objective of this study was to evaluate and compare the effects of PowerScope and Forsus in the treatment of Class II division 1 malocclusion.<\/jats:p>\n <\/jats:sec>\n \n Materials and Methods:<\/jats:title>\n \n This was a 2-arm parallel, double-blind, randomized, controlled trial. A total of 28 Class II division 1 malocclusion patients indicated for treatment with fixed functional appliances were randomized and equally divided (n = 14) among PowerScope (American Orthodontics, Sheboygan, Wis; mean age 14.11 \u00b1 1.3 years) and Forsus (3M Unitek Corp, Monrovia, Calif; mean age 15.5 \u00b1 1.1 years) groups. Skeletal and dentoalveolar effects of PowerScope and Forsus were compared. The secondary outcomes were evaluation of patient comfort and operator convenience. Randomization was accomplished with a 1:1 allocation ratio, and concealment was achieved by sealed opaque envelopes. The participants and data collectors were all blinded to study group allocation. Data were analyzed for 26 patients, 13 in each group, as one patient from each group discontinued treatment. Statistical comparisons were carried out using Student's\n t<\/jats:italic>\n -tests and chi square tests (\n P<\/jats:italic>\n \u2264 .05).\n <\/jats:p>\n <\/jats:sec>\n \n Results:<\/jats:title>\n \n A significantly greater mesial mandibular movement and improvement in sagittal skeletal relation were found in the Forsus patients (\n P<\/jats:italic>\n \u2264 .05). The forward movement of the mandibular molar and incisors were greater in the PowerScope patients (2.3 mm and 2.80 mm) than in the Forsus patients (1.9 mm and 2.38 mm).\n <\/jats:p>\n <\/jats:sec>\n \n Conclusions:<\/jats:title>\n Both PowerScope and Forsus are effective in correcting Class II malocclusion. The percentage of dentoalveolar effects in correcting Class II malocclusion is more for PowerScope when compared with Forsus. Patient comfort was the same with both appliances. This trial was registered.<\/jats:p>\n <\/jats:sec>","DOI":"10.2319\/071717-476.1","type":"journal-article","created":{"date-parts":[[2018,3,8]],"date-time":"2018-03-08T10:21:42Z","timestamp":1520504502000},"page":"259-266","source":"Crossref","is-referenced-by-count":26,"title":["Comparative evaluation of treatment effects between two fixed functional appliances for correction of Class II malocclusion: A single-center, randomized controlled trial"],"prefix":"10.2319","volume":"88","author":[{"given":"Vinni","family":"Arora","sequence":"first","affiliation":[{"name":"Postgraduate Student, Department of Orthodontics, Post Graduate Institute of Dental Sciences, Rohtak, Haryana, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rekha","family":"Sharma","sequence":"additional","affiliation":[{"name":"Professor and Head, Department of Orthodontics, Post Graduate Institute of Dental Sciences, Rohtak, Haryana, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sonal","family":"Chowdhary","sequence":"additional","affiliation":[{"name":"Associate Professor, Department of Orthodontics, Post Graduate Institute of Dental Sciences, Rohtak, Haryana, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1164","reference":[{"key":"i0003-3219-88-3-259-b01","series-title":"Angle Orthod","first-page":"177","article-title":"Components of Class II malocclusion in children 8\u201310 years of age","volume":"51","author":"Mcnamara \n JA.","year":"1981","unstructured":"Mcnamara \n JA. \n \n \n Components of Class II malocclusion in children 8\u201310 years of age. Angle Orthod. 1981;51:177\u2013202"},{"key":"i0003-3219-88-3-259-b02","series-title":"Am J Orthod Dentofacial Orthop","first-page":"153","article-title":"Mandibular changes during functional appliance treatment","volume":"104","author":"Nelson \n C,","year":"1993","unstructured":"Nelson \n C, \n \n \n Harkness \n M, \n \n \n Herbison \n P. \n \n \n Mandibular changes during functional appliance treatment. Am J Orthod Dentofacial Orthop. 1993;104:153\u2013161."},{"key":"i0003-3219-88-3-259-b03","series-title":"Angle Orthod","first-page":"410","article-title":"Cephalometric determinants of successful functional appliance therapy","volume":"72","author":"Patel \n HP,","year":"2002","unstructured":"Patel \n HP, \n \n \n Moseley \n HC, \n \n \n Noar \n JH. \n \n \n Cephalometric determinants of successful functional appliance therapy. Angle Orthod. 2002;72:410\u2013417."},{"key":"i0003-3219-88-3-259-b04","series-title":"Am J Orthod Dentofacial Orthop","first-page":"599.e1","article-title":"Mandibular changes produced by functional appliances in Class II malocclusion: a systematic review","volume":"129","author":"Cozza \n P,","year":"2006","unstructured":"Cozza \n P, \n \n \n Baccetti \n T, \n \n \n Franchi \n L, \n \n \n De Toffol \n L, \n \n \n McNamara \n JA. \n \n \n Mandibular changes produced by functional appliances in Class II malocclusion: a systematic review. Am J Orthod Dentofacial Orthop. 2006;129:599.e1\u201312."},{"key":"i0003-3219-88-3-259-b05","series-title":"Am J Orthod Dentofacial Orthop","first-page":"423","article-title":"Treatment of Class II malocclusions by jumping the bite with the Herbst appliance: a cephalometric investigation","volume":"76","author":"Pancherz \n H.","year":"1979","unstructured":"Pancherz \n H. \n \n \n Treatment of Class II malocclusions by jumping the bite with the Herbst appliance: a cephalometric investigation. Am J Orthod Dentofacial Orthop. 1979;76:423\u2013441."},{"key":"i0003-3219-88-3-259-b06","series-title":"J Clin Orthod","first-page":"368","article-title":"The Forsus Fatigue Resistant Device","volume":"40","author":"Vogt \n W.","year":"2006","unstructured":"Vogt \n W. \n \n \n The Forsus Fatigue Resistant Device. J Clin Orthod. 2006;40:368\u2013377."},{"key":"i0003-3219-88-3-259-b07","series-title":"J Orthod","first-page":"2","article-title":"Breakages using a unilateral fixed functional appliance: a case report using the ForsusTM Fatigue Resistant Device","volume":"34","author":"Ross \n AP,","year":"2007","unstructured":"Ross \n AP, \n \n \n Gaffey \n BJ, \n \n \n Quick \n AN. \n \n \n Breakages using a unilateral fixed functional appliance: a case report using the ForsusTM Fatigue Resistant Device. J Orthod. 2007;34:2\u20135."},{"key":"i0003-3219-88-3-259-b08","unstructured":"www.americanortho.com\/PowerScope.html\n ."},{"key":"i0003-3219-88-3-259-b09","series-title":"Angle Orthod","first-page":"485","article-title":"Treatment effects of twin-block and mandibular protraction appliance-IV in the correction of class ii malocclusion","volume":"80","author":"Jena \n AK,","year":"2010","unstructured":"Jena \n AK, \n \n \n Duggal \n R. \n \n \n Treatment effects of twin-block and mandibular protraction appliance-IV in the correction of class ii malocclusion. Angle Orthod. 2010;80:485\u2013491."},{"key":"i0003-3219-88-3-259-b10","series-title":"Semin Orthod","first-page":"119","article-title":"The cervical vertebral maturation (CVM) method for assessment of optimal treatment timing in dentofacial orthopedics","volume":"11","author":"Baccetti \n T,","year":"2005","unstructured":"Baccetti \n T, \n \n \n Franchi \n L, \n \n \n McNamara \n J. \n \n \n The cervical vertebral maturation (CVM) method for assessment of optimal treatment timing in dentofacial orthopedics. Semin Orthod. 2005;11:119\u2013129."},{"key":"i0003-3219-88-3-259-b11","series-title":"J Clin Orthod","first-page":"463","article-title":"The Forsus Fatigue Resistant Device as a fixed functional appliance","volume":"45","author":"Sood \n S.","year":"2011","unstructured":"Sood \n S. \n \n \n The Forsus Fatigue Resistant Device as a fixed functional appliance. J Clin Orthod. 2011;45:463\u2013467."},{"key":"i0003-3219-88-3-259-b12","series-title":"Angle Orthod","first-page":"437","article-title":"Patient experiences with the Forsus Fatigue Resistant Device","volume":"83","author":"Bowman \n AC,","year":"2013","unstructured":"Bowman \n AC, \n \n \n Saltaji \n H, \n \n \n Flores-Mirc \n C, \n \n \n Preston \n B, \n \n \n Tabbaa \n S. \n \n \n Patient experiences with the Forsus Fatigue Resistant Device. Angle Orthod. 2013;83:437\u2013446."},{"key":"i0003-3219-88-3-259-b13","series-title":"Br J Orthod","first-page":"93","article-title":"Balancing the books on orthodontic treatment: an integrated analysis of change","volume":"23","author":"Johnston \n LE.","year":"1996","unstructured":"Johnston \n LE. \n \n \n Balancing the books on orthodontic treatment: an integrated analysis of change. Br J Orthod. 1996;23:93\u2013102."},{"key":"i0003-3219-88-3-259-b14","series-title":"Angle Orthod","first-page":"786","article-title":"Mandibular growth during adolescence","volume":"76","author":"Gomes \n AS,","year":"2006","unstructured":"Gomes \n AS, \n \n \n Lima \n EM. \n \n \n Mandibular growth during adolescence. Angle Orthod. 2006;76:786\u2013790."},{"key":"i0003-3219-88-3-259-b15","series-title":"J Orofac Orthop","first-page":"436","article-title":"Clinical application and effects of the Forsus spring. A study of a new Herbst hybrid","volume":"62","author":"Heinig \n N,","year":"2001","unstructured":"Heinig \n N, \n \n \n Goz \n G. \n \n \n Clinical application and effects of the Forsus spring. A study of a new Herbst hybrid. J Orofac Orthop. 2001;62:436\u2013450."},{"key":"i0003-3219-88-3-259-b16","series-title":"Angle Orthod","first-page":"332","article-title":"Class II non-extraction patients treated with the Forsus fatigue resistant device versus intermaxillary elastics","volume":"78","author":"Jones \n G,","year":"2008","unstructured":"Jones \n G, \n \n \n Buschang \n PH, \n \n \n Kim \n KB, \n \n \n Oliver \n DR. \n \n \n Class II non-extraction patients treated with the Forsus fatigue resistant device versus intermaxillary elastics. Angle Orthod. 2008;78:332\u2013338."},{"key":"i0003-3219-88-3-259-b01","series-title":"Angle Orthod","first-page":"177","article-title":"Components of Class II malocclusion in children 8\u201310 years of age","volume":"51","author":"Mcnamara \n JA.","year":"1981","unstructured":"Mcnamara \n JA. \n \n \n Components of Class II malocclusion in children 8\u201310 years of age. Angle Orthod. 1981;51:177\u2013202"},{"key":"i0003-3219-88-3-259-b02","series-title":"Am J Orthod Dentofacial Orthop","first-page":"153","article-title":"Mandibular changes during functional appliance treatment","volume":"104","author":"Nelson \n C,","year":"1993","unstructured":"Nelson \n C, \n \n \n Harkness \n M, \n \n \n Herbison \n P. \n \n \n Mandibular changes during functional appliance treatment. Am J Orthod Dentofacial Orthop. 1993;104:153\u2013161."},{"key":"i0003-3219-88-3-259-b03","series-title":"Angle Orthod","first-page":"410","article-title":"Cephalometric determinants of successful functional appliance therapy","volume":"72","author":"Patel \n HP,","year":"2002","unstructured":"Patel \n HP, \n \n \n Moseley \n HC, \n \n \n Noar \n JH. \n \n \n Cephalometric determinants of successful functional appliance therapy. Angle Orthod. 2002;72:410\u2013417."},{"key":"i0003-3219-88-3-259-b04","series-title":"Am J Orthod Dentofacial Orthop","first-page":"599.e1","article-title":"Mandibular changes produced by functional appliances in Class II malocclusion: a systematic review","volume":"129","author":"Cozza \n P,","year":"2006","unstructured":"Cozza \n P, \n \n \n Baccetti \n T, \n \n \n Franchi \n L, \n \n \n De Toffol \n L, \n \n \n McNamara \n JA. \n \n \n Mandibular changes produced by functional appliances in Class II malocclusion: a systematic review. Am J Orthod Dentofacial Orthop. 2006;129:599.e1\u201312."},{"key":"i0003-3219-88-3-259-b05","series-title":"Am J Orthod Dentofacial Orthop","first-page":"423","article-title":"Treatment of Class II malocclusions by jumping the bite with the Herbst appliance: a cephalometric investigation","volume":"76","author":"Pancherz \n H.","year":"1979","unstructured":"Pancherz \n H. \n \n \n Treatment of Class II malocclusions by jumping the bite with the Herbst appliance: a cephalometric investigation. Am J Orthod Dentofacial Orthop. 1979;76:423\u2013441."},{"key":"i0003-3219-88-3-259-b06","series-title":"J Clin Orthod","first-page":"368","article-title":"The Forsus Fatigue Resistant Device","volume":"40","author":"Vogt \n W.","year":"2006","unstructured":"Vogt \n W. \n \n \n The Forsus Fatigue Resistant Device. J Clin Orthod. 2006;40:368\u2013377."},{"key":"i0003-3219-88-3-259-b07","series-title":"J Orthod","first-page":"2","article-title":"Breakages using a unilateral fixed functional appliance: a case report using the ForsusTM Fatigue Resistant Device","volume":"34","author":"Ross \n AP,","year":"2007","unstructured":"Ross \n AP, \n \n \n Gaffey \n BJ, \n \n \n Quick \n AN. \n \n \n Breakages using a unilateral fixed functional appliance: a case report using the ForsusTM Fatigue Resistant Device. J Orthod. 2007;34:2\u20135."},{"key":"i0003-3219-88-3-259-b08","unstructured":"www.americanortho.com\/PowerScope.html\n ."},{"key":"i0003-3219-88-3-259-b09","series-title":"Angle Orthod","first-page":"485","article-title":"Treatment effects of twin-block and mandibular protraction appliance-IV in the correction of class ii malocclusion","volume":"80","author":"Jena \n AK,","year":"2010","unstructured":"Jena \n AK, \n \n \n Duggal \n R. \n \n \n Treatment effects of twin-block and mandibular protraction appliance-IV in the correction of class ii malocclusion. Angle Orthod. 2010;80:485\u2013491."},{"key":"i0003-3219-88-3-259-b10","series-title":"Semin Orthod","first-page":"119","article-title":"The cervical vertebral maturation (CVM) method for assessment of optimal treatment timing in dentofacial orthopedics","volume":"11","author":"Baccetti \n T,","year":"2005","unstructured":"Baccetti \n T, \n \n \n Franchi \n L, \n \n \n McNamara \n J. \n \n \n The cervical vertebral maturation (CVM) method for assessment of optimal treatment timing in dentofacial orthopedics. Semin Orthod. 2005;11:119\u2013129."},{"key":"i0003-3219-88-3-259-b11","series-title":"J Clin Orthod","first-page":"463","article-title":"The Forsus Fatigue Resistant Device as a fixed functional appliance","volume":"45","author":"Sood \n S.","year":"2011","unstructured":"Sood \n S. \n \n \n The Forsus Fatigue Resistant Device as a fixed functional appliance. J Clin Orthod. 2011;45:463\u2013467."},{"key":"i0003-3219-88-3-259-b12","series-title":"Angle Orthod","first-page":"437","article-title":"Patient experiences with the Forsus Fatigue Resistant Device","volume":"83","author":"Bowman \n AC,","year":"2013","unstructured":"Bowman \n AC, \n \n \n Saltaji \n H, \n \n \n Flores-Mirc \n C, \n \n \n Preston \n B, \n \n \n Tabbaa \n S. \n \n \n Patient experiences with the Forsus Fatigue Resistant Device. Angle Orthod. 2013;83:437\u2013446."},{"key":"i0003-3219-88-3-259-b13","series-title":"Br J Orthod","first-page":"93","article-title":"Balancing the books on orthodontic treatment: an integrated analysis of change","volume":"23","author":"Johnston \n LE.","year":"1996","unstructured":"Johnston \n LE. \n \n \n Balancing the books on orthodontic treatment: an integrated analysis of change. Br J Orthod. 1996;23:93\u2013102."},{"key":"i0003-3219-88-3-259-b14","series-title":"Angle Orthod","first-page":"786","article-title":"Mandibular growth during adolescence","volume":"76","author":"Gomes \n AS,","year":"2006","unstructured":"Gomes \n AS, \n \n \n Lima \n EM. \n \n \n Mandibular growth during adolescence. Angle Orthod. 2006;76:786\u2013790."},{"key":"i0003-3219-88-3-259-b15","series-title":"J Orofac Orthop","first-page":"436","article-title":"Clinical application and effects of the Forsus spring. A study of a new Herbst hybrid","volume":"62","author":"Heinig \n N,","year":"2001","unstructured":"Heinig \n N, \n \n \n Goz \n G. \n \n \n Clinical application and effects of the Forsus spring. A study of a new Herbst hybrid. J Orofac Orthop. 2001;62:436\u2013450."},{"key":"i0003-3219-88-3-259-b16","series-title":"Angle Orthod","first-page":"332","article-title":"Class II non-extraction patients treated with the Forsus fatigue resistant device versus intermaxillary elastics","volume":"78","author":"Jones \n G,","year":"2008","unstructured":"Jones \n G, \n \n \n Buschang \n PH, \n \n \n Kim \n KB, \n \n \n Oliver \n DR. \n \n \n Class II non-extraction patients treated with the Forsus fatigue resistant device versus intermaxillary elastics. Angle Orthod. 2008;78:332\u2013338."}],"container-title":["The Angle Orthodontist"],"original-title":[],"link":[{"URL":"https:\/\/angle-orthodontist.kglmeridian.com\/view\/journals\/angl\/88\/3\/article-p259.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/meridian.allenpress.com\/angle-orthodontist\/article-pdf\/88\/3\/259\/1394843\/071717-476_1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/angle-orthodontist.kglmeridian.com\/downloadpdf\/journals\/angl\/88\/3\/article-p259.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/angle-orthodontist.kglmeridian.com\/downloadpdf\/journals\/angl\/88\/3\/article-p259.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,29]],"date-time":"2026-05-29T15:13:03Z","timestamp":1780067583000},"score":1,"resource":{"primary":{"URL":"https:\/\/angle-orthodontist.kglmeridian.com\/view\/journals\/angl\/88\/3\/article-p259.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,5]]},"references-count":32,"journal-issue":{"issue":"3"},"URL":"https:\/\/doi.org\/10.2319\/071717-476.1","relation":{},"ISSN":["0003-3219","1945-7103"],"issn-type":[{"value":"0003-3219","type":"print"},{"value":"1945-7103","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,5]]}}}