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Article: Class II correction in patients treated with Class II elastics and with fixed functional appliances: A comparative study

TitleClass II correction in patients treated with Class II elastics and with fixed functional appliances: A comparative study
Authors
Issue Date2000
PublisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/ajodo
Citation
American Journal Of Orthodontics And Dentofacial Orthopedics, 2000, v. 118 n. 2, p. 142-149 How to Cite?
AbstractThe aim of the present study was to evaluate quantitatively the skeletal and dental changes contributing to Class II corrections in subjects treated with Class II elastics (Begg technique) compared with subjects treated with fixed functional appliances (Herbst appliance). Thirty-six male patients with Class II, Division 1 malocclusions whose treatment had not included extraction were investigated. Eighteen were treated with the Begg technique, and eighteen were treated with Herbst appliance for an average period of 1.3 and 0.5 years, respectively. Lateral radiographs in habitual occlusion were taken at the start of treatment and 12 months afterwards. In the Begg group, the maxilla moved forward 1 mm more than in the Herbst group, and the mandible moved 1 mm more in the Herbst group than in the Begg group. The skeletal improvement in the Herbst group exceeded the changes in the Begg group by, on average, 2.0 mm (P < .01). The overjet reduction in the Begg group was larger (2.1 mm; P < .01 ) than in the Herbst group, mostly because of dental movements. The skeletal part of the overjet reduction was 4% in the Begg group compared with 51% in the Herbst group. The molar correction was similar in both groups, but in the Begg group, the skeletal improvement was 10%, compared with 66% in the Herbst group. The overbite correction and the increase in the anterior lower facial height and in the NSL/ML angle were larger in the Begg group (P < .05). The conclusions of this study were that the changes contributing to the Class II corrections in Begg and Herbst therapy were skeletal and dental. The skeletal changes were, however, larger in the Herbst-treated group. On the other hand, favorable and unfavorable vertical changes were more pronounced in the group treated with Class II elastics.
Persistent Identifierhttp://hdl.handle.net/10722/65907
ISSN
2015 Impact Factor: 1.69
2015 SCImago Journal Rankings: 1.249
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNelson, Ben_HK
dc.contributor.authorHansen, Ken_HK
dc.contributor.authorHägg, Uen_HK
dc.date.accessioned2010-09-06T05:42:00Z-
dc.date.available2010-09-06T05:42:00Z-
dc.date.issued2000en_HK
dc.identifier.citationAmerican Journal Of Orthodontics And Dentofacial Orthopedics, 2000, v. 118 n. 2, p. 142-149en_HK
dc.identifier.issn0889-5406en_HK
dc.identifier.urihttp://hdl.handle.net/10722/65907-
dc.description.abstractThe aim of the present study was to evaluate quantitatively the skeletal and dental changes contributing to Class II corrections in subjects treated with Class II elastics (Begg technique) compared with subjects treated with fixed functional appliances (Herbst appliance). Thirty-six male patients with Class II, Division 1 malocclusions whose treatment had not included extraction were investigated. Eighteen were treated with the Begg technique, and eighteen were treated with Herbst appliance for an average period of 1.3 and 0.5 years, respectively. Lateral radiographs in habitual occlusion were taken at the start of treatment and 12 months afterwards. In the Begg group, the maxilla moved forward 1 mm more than in the Herbst group, and the mandible moved 1 mm more in the Herbst group than in the Begg group. The skeletal improvement in the Herbst group exceeded the changes in the Begg group by, on average, 2.0 mm (P < .01). The overjet reduction in the Begg group was larger (2.1 mm; P < .01 ) than in the Herbst group, mostly because of dental movements. The skeletal part of the overjet reduction was 4% in the Begg group compared with 51% in the Herbst group. The molar correction was similar in both groups, but in the Begg group, the skeletal improvement was 10%, compared with 66% in the Herbst group. The overbite correction and the increase in the anterior lower facial height and in the NSL/ML angle were larger in the Begg group (P < .05). The conclusions of this study were that the changes contributing to the Class II corrections in Begg and Herbst therapy were skeletal and dental. The skeletal changes were, however, larger in the Herbst-treated group. On the other hand, favorable and unfavorable vertical changes were more pronounced in the group treated with Class II elastics.en_HK
dc.languageengen_HK
dc.publisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/ajodoen_HK
dc.relation.ispartofAmerican Journal of Orthodontics and Dentofacial Orthopedicsen_HK
dc.rightsAmerican Journal of Orthodontics and Dentofacial Orthopedics. Copyright © Mosby, Inc.en_HK
dc.subject.meshAdolescenten_HK
dc.subject.meshCephalometryen_HK
dc.subject.meshHumansen_HK
dc.subject.meshMaleen_HK
dc.subject.meshMalocclusion, Angle Class II - therapyen_HK
dc.subject.meshOrthodontic Appliancesen_HK
dc.subject.meshOrthodontic Appliances, Functionalen_HK
dc.subject.meshOrthodontics, Corrective - instrumentationen_HK
dc.subject.meshOutcome and Process Assessment (Health Care)en_HK
dc.subject.meshStatistics as Topicen_HK
dc.subject.meshVertical Dimensionen_HK
dc.titleClass II correction in patients treated with Class II elastics and with fixed functional appliances: A comparative studyen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0889-5406&volume=118 No2&spage=142&epage=149&date=2000&atitle=Class+II+correction+in+patients+treated+with+Class+II+elastics+and+with+fixed+functional+appliances:+A+comparative+studyen_HK
dc.identifier.emailHägg, U:euohagg@hkusua.hku.hken_HK
dc.identifier.authorityHägg, U=rp00020en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1067/mod.2000.104489en_HK
dc.identifier.pmid10935954-
dc.identifier.scopuseid_2-s2.0-0034243229en_HK
dc.identifier.hkuros56003en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034243229&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume118en_HK
dc.identifier.issue2en_HK
dc.identifier.spage142en_HK
dc.identifier.epage149en_HK
dc.identifier.isiWOS:000088773300007-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridNelson, B=7402428326en_HK
dc.identifier.scopusauthoridHansen, K=7401918543en_HK
dc.identifier.scopusauthoridHägg, U=7006790279en_HK

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